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linux-next/tools/perf/util/pmu.c

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
// SPDX-License-Identifier: GPL-2.0
#include <linux/list.h>
#include <linux/compiler.h>
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdarg.h>
#include <dirent.h>
#include <api/fs/fs.h>
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
#include <locale.h>
#include "util.h"
#include "pmu.h"
#include "parse-events.h"
#include "cpumap.h"
#include "header.h"
#include "pmu-events/pmu-events.h"
#include "cache.h"
#include "string2.h"
struct perf_pmu_format {
char *name;
int value;
DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
struct list_head list;
};
#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
int perf_pmu_parse(struct list_head *list, char *name);
extern FILE *perf_pmu_in;
static LIST_HEAD(pmus);
/*
* Parse & process all the sysfs attributes located under
* the directory specified in 'dir' parameter.
*/
int perf_pmu__format_parse(char *dir, struct list_head *head)
{
struct dirent *evt_ent;
DIR *format_dir;
int ret = 0;
format_dir = opendir(dir);
if (!format_dir)
return -EINVAL;
while (!ret && (evt_ent = readdir(format_dir))) {
char path[PATH_MAX];
char *name = evt_ent->d_name;
FILE *file;
if (!strcmp(name, ".") || !strcmp(name, ".."))
continue;
snprintf(path, PATH_MAX, "%s/%s", dir, name);
ret = -EINVAL;
file = fopen(path, "r");
if (!file)
break;
perf_pmu_in = file;
ret = perf_pmu_parse(head, name);
fclose(file);
}
closedir(format_dir);
return ret;
}
/*
* Reading/parsing the default pmu format definition, which should be
* located at:
* /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
*/
static int pmu_format(const char *name, struct list_head *format)
{
struct stat st;
char path[PATH_MAX];
const char *sysfs = sysfs__mountpoint();
if (!sysfs)
return -1;
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
if (stat(path, &st) < 0)
return 0; /* no error if format does not exist */
if (perf_pmu__format_parse(path, format))
return -1;
return 0;
}
static int convert_scale(const char *scale, char **end, double *sval)
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
{
char *lc;
int ret = 0;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
/*
* save current locale
*/
lc = setlocale(LC_NUMERIC, NULL);
/*
* The lc string may be allocated in static storage,
* so get a dynamic copy to make it survive setlocale
* call below.
*/
lc = strdup(lc);
if (!lc) {
ret = -ENOMEM;
goto out;
}
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
/*
* force to C locale to ensure kernel
* scale string is converted correctly.
* kernel uses default C locale.
*/
setlocale(LC_NUMERIC, "C");
*sval = strtod(scale, end);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
out:
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
/* restore locale */
setlocale(LC_NUMERIC, lc);
free(lc);
return ret;
}
static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
{
struct stat st;
ssize_t sret;
char scale[128];
int fd, ret = -1;
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
fd = open(path, O_RDONLY);
if (fd == -1)
return -1;
if (fstat(fd, &st) < 0)
goto error;
sret = read(fd, scale, sizeof(scale)-1);
if (sret < 0)
goto error;
if (scale[sret - 1] == '\n')
scale[sret - 1] = '\0';
else
scale[sret] = '\0';
ret = convert_scale(scale, NULL, &alias->scale);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
error:
close(fd);
return ret;
}
static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name)
{
char path[PATH_MAX];
ssize_t sret;
int fd;
snprintf(path, PATH_MAX, "%s/%s.unit", dir, name);
fd = open(path, O_RDONLY);
if (fd == -1)
return -1;
sret = read(fd, alias->unit, UNIT_MAX_LEN);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
if (sret < 0)
goto error;
close(fd);
if (alias->unit[sret - 1] == '\n')
alias->unit[sret - 1] = '\0';
else
alias->unit[sret] = '\0';
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
return 0;
error:
close(fd);
alias->unit[0] = '\0';
return -1;
}
static int
perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name)
{
char path[PATH_MAX];
int fd;
snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name);
fd = open(path, O_RDONLY);
if (fd == -1)
return -1;
close(fd);
alias->per_pkg = true;
return 0;
}
static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
char *dir, char *name)
{
char path[PATH_MAX];
int fd;
snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name);
fd = open(path, O_RDONLY);
if (fd == -1)
return -1;
alias->snapshot = true;
close(fd);
return 0;
}
static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
char *desc, char *val,
char *long_desc, char *topic,
char *unit, char *perpkg,
char *metric_expr,
char *metric_name)
{
struct perf_pmu_alias *alias;
int ret;
int num;
alias = malloc(sizeof(*alias));
if (!alias)
return -ENOMEM;
INIT_LIST_HEAD(&alias->terms);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
alias->scale = 1.0;
alias->unit[0] = '\0';
alias->per_pkg = false;
alias->snapshot = false;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
ret = parse_events_terms(&alias->terms, val);
if (ret) {
pr_err("Cannot parse alias %s: %d\n", val, ret);
free(alias);
return ret;
}
alias->name = strdup(name);
if (dir) {
/*
* load unit name and scale if available
*/
perf_pmu__parse_unit(alias, dir, name);
perf_pmu__parse_scale(alias, dir, name);
perf_pmu__parse_per_pkg(alias, dir, name);
perf_pmu__parse_snapshot(alias, dir, name);
}
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
alias->metric_name = metric_name ? strdup(metric_name): NULL;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
alias->desc = desc ? strdup(desc) : NULL;
alias->long_desc = long_desc ? strdup(long_desc) :
desc ? strdup(desc) : NULL;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
alias->topic = topic ? strdup(topic) : NULL;
if (unit) {
if (convert_scale(unit, &unit, &alias->scale) < 0)
return -1;
snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
}
alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
alias->str = strdup(val);
list_add_tail(&alias->list, list);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
return 0;
}
static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
{
char buf[256];
int ret;
ret = fread(buf, 1, sizeof(buf), file);
if (ret == 0)
return -EINVAL;
buf[ret] = 0;
return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
NULL, NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
{
size_t len;
len = strlen(name);
if (len > 5 && !strcmp(name + len - 5, ".unit"))
return true;
if (len > 6 && !strcmp(name + len - 6, ".scale"))
return true;
if (len > 8 && !strcmp(name + len - 8, ".per-pkg"))
return true;
if (len > 9 && !strcmp(name + len - 9, ".snapshot"))
return true;
return false;
}
/*
* Process all the sysfs attributes located under the directory
* specified in 'dir' parameter.
*/
static int pmu_aliases_parse(char *dir, struct list_head *head)
{
struct dirent *evt_ent;
DIR *event_dir;
event_dir = opendir(dir);
if (!event_dir)
return -EINVAL;
while ((evt_ent = readdir(event_dir))) {
char path[PATH_MAX];
char *name = evt_ent->d_name;
FILE *file;
if (!strcmp(name, ".") || !strcmp(name, ".."))
continue;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
/*
* skip info files parsed in perf_pmu__new_alias()
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
*/
if (pmu_alias_info_file(name))
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
continue;
snprintf(path, PATH_MAX, "%s/%s", dir, name);
file = fopen(path, "r");
if (!file) {
pr_debug("Cannot open %s\n", path);
continue;
}
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
if (perf_pmu__new_alias(head, dir, name, file) < 0)
pr_debug("Cannot set up %s\n", name);
fclose(file);
}
closedir(event_dir);
return 0;
}
/*
* Reading the pmu event aliases definition, which should be located at:
* /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
*/
static int pmu_aliases(const char *name, struct list_head *head)
{
struct stat st;
char path[PATH_MAX];
const char *sysfs = sysfs__mountpoint();
if (!sysfs)
return -1;
snprintf(path, PATH_MAX,
"%s/bus/event_source/devices/%s/events", sysfs, name);
if (stat(path, &st) < 0)
return 0; /* no error if 'events' does not exist */
if (pmu_aliases_parse(path, head))
return -1;
return 0;
}
static int pmu_alias_terms(struct perf_pmu_alias *alias,
struct list_head *terms)
{
struct parse_events_term *term, *cloned;
LIST_HEAD(list);
int ret;
list_for_each_entry(term, &alias->terms, list) {
ret = parse_events_term__clone(&cloned, term);
if (ret) {
parse_events_terms__purge(&list);
return ret;
}
/*
* Weak terms don't override command line options,
* which we don't want for implicit terms in aliases.
*/
cloned->weak = true;
list_add_tail(&cloned->list, &list);
}
list_splice(&list, terms);
return 0;
}
/*
* Reading/parsing the default pmu type value, which should be
* located at:
* /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
*/
static int pmu_type(const char *name, __u32 *type)
{
struct stat st;
char path[PATH_MAX];
FILE *file;
int ret = 0;
const char *sysfs = sysfs__mountpoint();
if (!sysfs)
return -1;
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
if (stat(path, &st) < 0)
return -1;
file = fopen(path, "r");
if (!file)
return -EINVAL;
if (1 != fscanf(file, "%u", type))
ret = -1;
fclose(file);
return ret;
}
/* Add all pmus in sysfs to pmu list: */
static void pmu_read_sysfs(void)
{
char path[PATH_MAX];
DIR *dir;
struct dirent *dent;
const char *sysfs = sysfs__mountpoint();
if (!sysfs)
return;
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH, sysfs);
dir = opendir(path);
if (!dir)
return;
while ((dent = readdir(dir))) {
if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
continue;
/* add to static LIST_HEAD(pmus): */
perf_pmu__find(dent->d_name);
}
closedir(dir);
}
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
static struct cpu_map *__pmu_cpumask(const char *path)
{
FILE *file;
struct cpu_map *cpus;
file = fopen(path, "r");
if (!file)
return NULL;
cpus = cpu_map__read(file);
fclose(file);
return cpus;
}
/*
* Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
* may have a "cpus" file.
*/
#define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
#define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
static struct cpu_map *pmu_cpumask(const char *name)
{
char path[PATH_MAX];
struct cpu_map *cpus;
const char *sysfs = sysfs__mountpoint();
perf pmu: Support alternative sysfs cpumask The perf tools can read a cpumask file for a PMU, describing a subset of CPUs which that PMU covers. So far this has only been used to cater for uncore PMUs, which in practice happen to only have a single CPU described in the mask. Until recently, the perf tools only correctly handled cpumask containing a single CPU, and only when monitoring in system-wide mode. For example, prior to commit 00e727bb389359c8 ("perf stat: Balance opening and reading events"), a mask with more than a single CPU could cause perf stat to hang. When a CPU PMU covers a subset of CPUs, but lacks a cpumask, perf record will fail to open events (on the cores the PMU does not support), and gives up. For systems with heterogeneous CPUs such as ARM big.LITTLE systems, this presents a problem. We have a PMU for each microarchitecture (e.g. a big PMU and a little PMU), and would like to expose a cpumask for each (so as to allow perf record and other tools to do the right thing). However, doing so kernel-side will cause old perf binaries to not function (e.g. hitting the issue solved by 00e727bb389359c8), and thus commits the cardinal sin of breaking (existing) userspace. To address this chicken-and-egg problem, this patch adds support got a new file, cpus, which is largely identical to the existing cpumask file. A kernel can expose this file, knowing that new perf binaries will correctly support it, while old perf binaries will not look for it (and thus will not be broken). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1473330112-28528-8-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-08 18:21:52 +08:00
const char *templates[] = {
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
CPUS_TEMPLATE_UNCORE,
CPUS_TEMPLATE_CPU,
NULL
perf pmu: Support alternative sysfs cpumask The perf tools can read a cpumask file for a PMU, describing a subset of CPUs which that PMU covers. So far this has only been used to cater for uncore PMUs, which in practice happen to only have a single CPU described in the mask. Until recently, the perf tools only correctly handled cpumask containing a single CPU, and only when monitoring in system-wide mode. For example, prior to commit 00e727bb389359c8 ("perf stat: Balance opening and reading events"), a mask with more than a single CPU could cause perf stat to hang. When a CPU PMU covers a subset of CPUs, but lacks a cpumask, perf record will fail to open events (on the cores the PMU does not support), and gives up. For systems with heterogeneous CPUs such as ARM big.LITTLE systems, this presents a problem. We have a PMU for each microarchitecture (e.g. a big PMU and a little PMU), and would like to expose a cpumask for each (so as to allow perf record and other tools to do the right thing). However, doing so kernel-side will cause old perf binaries to not function (e.g. hitting the issue solved by 00e727bb389359c8), and thus commits the cardinal sin of breaking (existing) userspace. To address this chicken-and-egg problem, this patch adds support got a new file, cpus, which is largely identical to the existing cpumask file. A kernel can expose this file, knowing that new perf binaries will correctly support it, while old perf binaries will not look for it (and thus will not be broken). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1473330112-28528-8-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-08 18:21:52 +08:00
};
const char **template;
if (!sysfs)
return NULL;
perf pmu: Support alternative sysfs cpumask The perf tools can read a cpumask file for a PMU, describing a subset of CPUs which that PMU covers. So far this has only been used to cater for uncore PMUs, which in practice happen to only have a single CPU described in the mask. Until recently, the perf tools only correctly handled cpumask containing a single CPU, and only when monitoring in system-wide mode. For example, prior to commit 00e727bb389359c8 ("perf stat: Balance opening and reading events"), a mask with more than a single CPU could cause perf stat to hang. When a CPU PMU covers a subset of CPUs, but lacks a cpumask, perf record will fail to open events (on the cores the PMU does not support), and gives up. For systems with heterogeneous CPUs such as ARM big.LITTLE systems, this presents a problem. We have a PMU for each microarchitecture (e.g. a big PMU and a little PMU), and would like to expose a cpumask for each (so as to allow perf record and other tools to do the right thing). However, doing so kernel-side will cause old perf binaries to not function (e.g. hitting the issue solved by 00e727bb389359c8), and thus commits the cardinal sin of breaking (existing) userspace. To address this chicken-and-egg problem, this patch adds support got a new file, cpus, which is largely identical to the existing cpumask file. A kernel can expose this file, knowing that new perf binaries will correctly support it, while old perf binaries will not look for it (and thus will not be broken). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1473330112-28528-8-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-08 18:21:52 +08:00
for (template = templates; *template; template++) {
snprintf(path, PATH_MAX, *template, sysfs, name);
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
cpus = __pmu_cpumask(path);
if (cpus)
return cpus;
perf pmu: Support alternative sysfs cpumask The perf tools can read a cpumask file for a PMU, describing a subset of CPUs which that PMU covers. So far this has only been used to cater for uncore PMUs, which in practice happen to only have a single CPU described in the mask. Until recently, the perf tools only correctly handled cpumask containing a single CPU, and only when monitoring in system-wide mode. For example, prior to commit 00e727bb389359c8 ("perf stat: Balance opening and reading events"), a mask with more than a single CPU could cause perf stat to hang. When a CPU PMU covers a subset of CPUs, but lacks a cpumask, perf record will fail to open events (on the cores the PMU does not support), and gives up. For systems with heterogeneous CPUs such as ARM big.LITTLE systems, this presents a problem. We have a PMU for each microarchitecture (e.g. a big PMU and a little PMU), and would like to expose a cpumask for each (so as to allow perf record and other tools to do the right thing). However, doing so kernel-side will cause old perf binaries to not function (e.g. hitting the issue solved by 00e727bb389359c8), and thus commits the cardinal sin of breaking (existing) userspace. To address this chicken-and-egg problem, this patch adds support got a new file, cpus, which is largely identical to the existing cpumask file. A kernel can expose this file, knowing that new perf binaries will correctly support it, while old perf binaries will not look for it (and thus will not be broken). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1473330112-28528-8-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-08 18:21:52 +08:00
}
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
return NULL;
}
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
static bool pmu_is_uncore(const char *name)
{
char path[PATH_MAX];
struct cpu_map *cpus;
const char *sysfs = sysfs__mountpoint();
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
cpus = __pmu_cpumask(path);
cpu_map__put(cpus);
return !!cpus;
}
/*
* Return the CPU id as a raw string.
*
* Each architecture should provide a more precise id string that
* can be use to match the architecture's "mapfile".
*/
char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
{
return NULL;
}
static char *perf_pmu__getcpuid(struct perf_pmu *pmu)
{
char *cpuid;
static bool printed;
cpuid = getenv("PERF_CPUID");
if (cpuid)
cpuid = strdup(cpuid);
if (!cpuid)
cpuid = get_cpuid_str(pmu);
if (!cpuid)
return NULL;
if (!printed) {
pr_debug("Using CPUID %s\n", cpuid);
printed = true;
}
return cpuid;
}
struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu)
{
struct pmu_events_map *map;
char *cpuid = perf_pmu__getcpuid(pmu);
int i;
i = 0;
for (;;) {
map = &pmu_events_map[i++];
if (!map->table) {
map = NULL;
break;
}
if (!strcmp(map->cpuid, cpuid))
break;
}
free(cpuid);
return map;
}
/*
* From the pmu_events_map, find the table of PMU events that corresponds
* to the current running CPU. Then, add all PMU events from that table
* as aliases.
*/
static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
{
int i;
struct pmu_events_map *map;
struct pmu_event *pe;
const char *name = pmu->name;
map = perf_pmu__find_map(pmu);
if (!map)
return;
/*
* Found a matching PMU events table. Create aliases
*/
i = 0;
while (1) {
const char *pname;
pe = &map->table[i++];
perf stat: Support JSON metrics in perf stat Add generic support for standalone metrics specified in JSON files to perf stat. A metric is a formula that uses multiple events to compute a higher level result (e.g. IPC). Previously metrics were always tied to an event and automatically enabled with that event. But now change it that we can have standalone metrics. They are in the same JSON data structure as events, but don't have an event name. We also allow to organize the metrics in metric groups, which allows a short cut to select several related metrics at once. Add a new -M / --metrics option to perf stat that adds the metrics or metric groups specified. Add the core code to manage and parse the metric groups. They are collected from the JSON data structures into a separate rblist. When computing shadow values look for metrics in that list. Then they are computed using the existing saved values infrastructure in stat-shadow.c The actual JSON metrics are in a separate pull request. % perf stat -M Summary --metric-only -a sleep 1 Performance counter stats for 'system wide': Instructions CLKS CPU_Utilization GFLOPs SMT_2T_Utilization Kernel_Utilization 317614222.0 1392930775.0 0.0 0.0 0.2 0.1 1.001497549 seconds time elapsed % perf stat -M GFLOPs flops Performance counter stats for 'flops': 3,999,541,471 fp_comp_ops_exe.sse_scalar_single # 1.2 GFLOPs (66.65%) 14 fp_comp_ops_exe.sse_scalar_double (66.65%) 0 fp_comp_ops_exe.sse_packed_double (66.67%) 0 fp_comp_ops_exe.sse_packed_single (66.70%) 0 simd_fp_256.packed_double (66.70%) 0 simd_fp_256.packed_single (66.67%) 0 duration_time 3.238372845 seconds time elapsed v2: Add missing header file v3: Move find_map to pmu.c Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170831194036.30146-7-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-09-01 03:40:31 +08:00
if (!pe->name) {
if (pe->metric_group || pe->metric_name)
continue;
break;
perf stat: Support JSON metrics in perf stat Add generic support for standalone metrics specified in JSON files to perf stat. A metric is a formula that uses multiple events to compute a higher level result (e.g. IPC). Previously metrics were always tied to an event and automatically enabled with that event. But now change it that we can have standalone metrics. They are in the same JSON data structure as events, but don't have an event name. We also allow to organize the metrics in metric groups, which allows a short cut to select several related metrics at once. Add a new -M / --metrics option to perf stat that adds the metrics or metric groups specified. Add the core code to manage and parse the metric groups. They are collected from the JSON data structures into a separate rblist. When computing shadow values look for metrics in that list. Then they are computed using the existing saved values infrastructure in stat-shadow.c The actual JSON metrics are in a separate pull request. % perf stat -M Summary --metric-only -a sleep 1 Performance counter stats for 'system wide': Instructions CLKS CPU_Utilization GFLOPs SMT_2T_Utilization Kernel_Utilization 317614222.0 1392930775.0 0.0 0.0 0.2 0.1 1.001497549 seconds time elapsed % perf stat -M GFLOPs flops Performance counter stats for 'flops': 3,999,541,471 fp_comp_ops_exe.sse_scalar_single # 1.2 GFLOPs (66.65%) 14 fp_comp_ops_exe.sse_scalar_double (66.65%) 0 fp_comp_ops_exe.sse_packed_double (66.67%) 0 fp_comp_ops_exe.sse_packed_single (66.70%) 0 simd_fp_256.packed_double (66.70%) 0 simd_fp_256.packed_single (66.67%) 0 duration_time 3.238372845 seconds time elapsed v2: Add missing header file v3: Move find_map to pmu.c Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170831194036.30146-7-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-09-01 03:40:31 +08:00
}
pname = pe->pmu ? pe->pmu : "cpu";
if (strncmp(pname, name, strlen(pname)))
continue;
/* need type casts to override 'const' */
__perf_pmu__new_alias(head, NULL, (char *)pe->name,
(char *)pe->desc, (char *)pe->event,
(char *)pe->long_desc, (char *)pe->topic,
(char *)pe->unit, (char *)pe->perpkg,
(char *)pe->metric_expr,
(char *)pe->metric_name);
}
}
struct perf_event_attr * __weak
perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
{
return NULL;
}
static struct perf_pmu *pmu_lookup(const char *name)
{
struct perf_pmu *pmu;
LIST_HEAD(format);
LIST_HEAD(aliases);
__u32 type;
/*
* The pmu data we store & need consists of the pmu
* type value and format definitions. Load both right
* now.
*/
if (pmu_format(name, &format))
return NULL;
/*
* Check the type first to avoid unnecessary work.
*/
if (pmu_type(name, &type))
return NULL;
if (pmu_aliases(name, &aliases))
return NULL;
pmu = zalloc(sizeof(*pmu));
if (!pmu)
return NULL;
pmu->cpus = pmu_cpumask(name);
pmu->name = strdup(name);
pmu->type = type;
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
pmu->is_uncore = pmu_is_uncore(name);
pmu_add_cpu_aliases(&aliases, pmu);
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU Currently, perf record is broken on arm/arm64 systems when the PMU is specified explicitly as part of the event, e.g. $ ./perf record -e armv8_cortex_a53/cpu_cycles/u true In such cases, perf record fails to open events unless perf_event_paranoid is set to -1, even if the PMU in question supports mode exclusion. Further, even when perf_event_paranoid is toggled, no samples are recorded. This is an unintended side effect of commit: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) ... which assumes that if a PMU has an associated cpu_map, it is an uncore PMU, and forces events for such PMUs to be system-wide. This is not true for arm/arm64 systems, which can have heterogeneous CPUs. To account for this, multiple CPU PMUs are exposed, each with a "cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM PMUs do not have a "cpumask" file, and only have a "cpus" file. For the gory details as to why, see commit: 7e3fcffe95544010 ("perf pmu: Support alternative sysfs cpumask") Given all of this, we can instead identify uncore PMUs by explicitly checking for a "cpumask" file, and restore arm/arm64 PMU support back to a working state. This patch does so, adding a new perf_pmu::is_uncore field, and splitting the existing cpumask parsing so that it can be reused. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Tested-by Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: 4.12+ <stable@vger.kernel.org> Fixes: e3ba76deef23064f ("perf tools: Force uncore events to system wide monitoring) Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-07 02:38:22 +08:00
INIT_LIST_HEAD(&pmu->format);
INIT_LIST_HEAD(&pmu->aliases);
list_splice(&format, &pmu->format);
list_splice(&aliases, &pmu->aliases);
list_add_tail(&pmu->list, &pmus);
pmu->default_config = perf_pmu__get_default_config(pmu);
return pmu;
}
static struct perf_pmu *pmu_find(const char *name)
{
struct perf_pmu *pmu;
list_for_each_entry(pmu, &pmus, list)
if (!strcmp(pmu->name, name))
return pmu;
return NULL;
}
struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
{
/*
* pmu iterator: If pmu is NULL, we start at the begin,
* otherwise return the next pmu. Returns NULL on end.
*/
if (!pmu) {
pmu_read_sysfs();
pmu = list_prepare_entry(pmu, &pmus, list);
}
list_for_each_entry_continue(pmu, &pmus, list)
return pmu;
return NULL;
}
struct perf_pmu *perf_pmu__find(const char *name)
{
struct perf_pmu *pmu;
/*
* Once PMU is loaded it stays in the list,
* so we keep us from multiple reading/parsing
* the pmu format definitions.
*/
pmu = pmu_find(name);
if (pmu)
return pmu;
return pmu_lookup(name);
}
static struct perf_pmu_format *
pmu_find_format(struct list_head *formats, const char *name)
{
struct perf_pmu_format *format;
list_for_each_entry(format, formats, list)
if (!strcmp(format->name, name))
return format;
return NULL;
}
__u64 perf_pmu__format_bits(struct list_head *formats, const char *name)
{
struct perf_pmu_format *format = pmu_find_format(formats, name);
__u64 bits = 0;
int fbit;
if (!format)
return 0;
for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)
bits |= 1ULL << fbit;
return bits;
}
/*
* Sets value based on the format definition (format parameter)
* and unformated value (value parameter).
*/
static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v,
bool zero)
{
unsigned long fbit, vbit;
for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) {
if (!test_bit(fbit, format))
continue;
if (value & (1llu << vbit++))
*v |= (1llu << fbit);
else if (zero)
*v &= ~(1llu << fbit);
}
}
static __u64 pmu_format_max_value(const unsigned long *format)
{
__u64 w = 0;
int fbit;
for_each_set_bit(fbit, format, PERF_PMU_FORMAT_BITS)
w |= (1ULL << fbit);
return w;
}
/*
* Term is a string term, and might be a param-term. Try to look up it's value
* in the remaining terms.
* - We have a term like "base-or-format-term=param-term",
* - We need to find the value supplied for "param-term" (with param-term named
* in a config string) later on in the term list.
*/
static int pmu_resolve_param_term(struct parse_events_term *term,
struct list_head *head_terms,
__u64 *value)
{
struct parse_events_term *t;
list_for_each_entry(t, head_terms, list) {
if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
if (!strcmp(t->config, term->config)) {
t->used = true;
*value = t->val.num;
return 0;
}
}
}
if (verbose > 0)
printf("Required parameter '%s' not specified\n", term->config);
return -1;
}
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
static char *pmu_formats_string(struct list_head *formats)
{
struct perf_pmu_format *format;
char *str = NULL;
struct strbuf buf = STRBUF_INIT;
unsigned i = 0;
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
if (!formats)
return NULL;
/* sysfs exported terms */
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
list_for_each_entry(format, formats, list)
if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
goto error;
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
str = strbuf_detach(&buf, NULL);
error:
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
strbuf_release(&buf);
return str;
}
/*
* Setup one of config[12] attr members based on the
* user input data - term parameter.
*/
static int pmu_config_term(struct list_head *formats,
struct perf_event_attr *attr,
struct parse_events_term *term,
struct list_head *head_terms,
bool zero, struct parse_events_error *err)
{
struct perf_pmu_format *format;
__u64 *vp;
__u64 val, max_val;
/*
* If this is a parameter we've already used for parameterized-eval,
* skip it in normal eval.
*/
if (term->used)
return 0;
/*
* Hardcoded terms should be already in, so nothing
* to be done for them.
*/
if (parse_events__is_hardcoded_term(term))
return 0;
format = pmu_find_format(formats, term->config);
if (!format) {
if (verbose > 0)
printf("Invalid event/parameter '%s'\n", term->config);
if (err) {
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
char *pmu_term = pmu_formats_string(formats);
err->idx = term->err_term;
err->str = strdup("unknown term");
perf tools: Show proper error message for wrong terms of hw/sw events Show proper error message and show valid terms when wrong config terms is specified for hw/sw type perf events. This patch makes the original error format function formats_error_string() more generic, which only outputs the static config terms for hw/sw perf events, and prepends pmu formats for pmu events. Before this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 invalid or unsupported event: 'cpu-clock/freqx=200/' Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events After this patch: $ perf record -e 'cpu-clock/freqx=200/' -a sleep 1 event syntax error: 'cpu-clock/freqx=200/' \___ unknown term valid terms: config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size Run 'perf list' for a list of valid events usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -e, --event <event> event selector. use 'perf list' to list available events Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1443412336-120050-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 11:52:14 +08:00
err->help = parse_events_formats_error_string(pmu_term);
free(pmu_term);
}
return -EINVAL;
}
switch (format->value) {
case PERF_PMU_FORMAT_VALUE_CONFIG:
vp = &attr->config;
break;
case PERF_PMU_FORMAT_VALUE_CONFIG1:
vp = &attr->config1;
break;
case PERF_PMU_FORMAT_VALUE_CONFIG2:
vp = &attr->config2;
break;
default:
return -EINVAL;
}
/*
* Either directly use a numeric term, or try to translate string terms
* using event parameters.
*/
if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
if (term->no_value &&
bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
if (err) {
err->idx = term->err_val;
err->str = strdup("no value assigned for term");
}
return -EINVAL;
}
val = term->val.num;
} else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
if (strcmp(term->val.str, "?")) {
if (verbose > 0) {
pr_info("Invalid sysfs entry %s=%s\n",
term->config, term->val.str);
}
if (err) {
err->idx = term->err_val;
err->str = strdup("expected numeric value");
}
return -EINVAL;
}
if (pmu_resolve_param_term(term, head_terms, &val))
return -EINVAL;
} else
return -EINVAL;
max_val = pmu_format_max_value(format->bits);
if (val > max_val) {
if (err) {
err->idx = term->err_val;
if (asprintf(&err->str,
"value too big for format, maximum is %llu",
(unsigned long long)max_val) < 0)
err->str = strdup("value too big for format");
return -EINVAL;
}
/*
* Assume we don't care if !err, in which case the value will be
* silently truncated.
*/
}
pmu_format_value(format->bits, val, vp, zero);
return 0;
}
int perf_pmu__config_terms(struct list_head *formats,
struct perf_event_attr *attr,
struct list_head *head_terms,
bool zero, struct parse_events_error *err)
{
struct parse_events_term *term;
list_for_each_entry(term, head_terms, list) {
if (pmu_config_term(formats, attr, term, head_terms,
zero, err))
return -EINVAL;
}
return 0;
}
/*
* Configures event's 'attr' parameter based on the:
* 1) users input - specified in terms parameter
* 2) pmu format definitions - specified by pmu parameter
*/
int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
struct list_head *head_terms,
struct parse_events_error *err)
{
bool zero = !!pmu->default_config;
attr->type = pmu->type;
return perf_pmu__config_terms(&pmu->format, attr, head_terms,
zero, err);
}
static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
struct parse_events_term *term)
{
struct perf_pmu_alias *alias;
char *name;
if (parse_events__is_hardcoded_term(term))
return NULL;
if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
if (term->val.num != 1)
return NULL;
if (pmu_find_format(&pmu->format, term->config))
return NULL;
name = term->config;
} else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
if (strcasecmp(term->config, "event"))
return NULL;
name = term->val.str;
} else {
return NULL;
}
list_for_each_entry(alias, &pmu->aliases, list) {
if (!strcasecmp(alias->name, name))
return alias;
}
return NULL;
}
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
static int check_info_data(struct perf_pmu_alias *alias,
struct perf_pmu_info *info)
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
{
/*
* Only one term in event definition can
* define unit, scale and snapshot, fail
* if there's more than one.
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
*/
if ((info->unit && alias->unit[0]) ||
(info->scale && alias->scale) ||
(info->snapshot && alias->snapshot))
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
return -EINVAL;
if (alias->unit[0])
info->unit = alias->unit;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
if (alias->scale)
info->scale = alias->scale;
if (alias->snapshot)
info->snapshot = alias->snapshot;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
return 0;
}
/*
* Find alias in the terms list and replace it with the terms
* defined for the alias
*/
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
struct perf_pmu_info *info)
{
struct parse_events_term *term, *h;
struct perf_pmu_alias *alias;
int ret;
info->per_pkg = false;
/*
* Mark unit and scale as not set
* (different from default values, see below)
*/
info->unit = NULL;
info->scale = 0.0;
info->snapshot = false;
perf stat: Output JSON MetricExpr metric Add generic infrastructure to perf stat to output ratios for "MetricExpr" entries in the event lists. Many events are more useful as ratios than in raw form, typically some count in relation to total ticks. Transfer the MetricExpr information from the alias to the evsel. We mark the events that need to be collected for MetricExpr, and also link the events using them with a pointer. The code is careful to always prefer the right event in the same group to minimize multiplexing errors. At the moment only a single relation is supported. Then add a rblist to the stat shadow code that remembers stats based on the cpu and context. Then finally update and retrieve and print these values similarly to the existing hardcoded perf metrics. We use the simple expression parser added earlier to evaluate the expression. Normally we just output the result without further commentary, but for --metric-only this would lead to empty columns. So for this case use the original event as description. There is no attempt to automatically add the MetricExpr event, if it is missing, however we suggest it to the user, because the user tool doesn't have enough information to reliably construct a group that is guaranteed to schedule. So we leave that to the user. % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' 1.000147889 800,085,181 unc_p_clockticks 1.000147889 93,126,241 unc_p_freq_max_os_cycles # 11.6 2.000448381 800,218,217 unc_p_clockticks 2.000448381 142,516,095 unc_p_freq_max_os_cycles # 17.8 3.000639852 800,243,057 unc_p_clockticks 3.000639852 162,292,689 unc_p_freq_max_os_cycles # 20.3 % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only # time freq_max_os_cycles % 1.000127077 0.9 2.000301436 0.7 3.000456379 0.0 v2: Change from DivideBy to MetricExpr v3: Use expr__ prefix. Support more than one other event. v4: Update description v5: Only print warning message once for multiple PMUs. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170320201711.14142-11-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-21 04:17:08 +08:00
info->metric_expr = NULL;
info->metric_name = NULL;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
list_for_each_entry_safe(term, h, head_terms, list) {
alias = pmu_find_alias(pmu, term);
if (!alias)
continue;
ret = pmu_alias_terms(alias, &term->list);
if (ret)
return ret;
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
ret = check_info_data(alias, info);
tools/perf/stat: Add event unit and scale support This patch adds perf stat support for handling event units and scales as exported by the kernel. The kernel can export PMU events actual unit and scaling factor via sysfs: $ ls -1 /sys/devices/power/events/energy-* /sys/devices/power/events/energy-cores /sys/devices/power/events/energy-cores.scale /sys/devices/power/events/energy-cores.unit /sys/devices/power/events/energy-pkg /sys/devices/power/events/energy-pkg.scale /sys/devices/power/events/energy-pkg.unit $ cat /sys/devices/power/events/energy-cores.scale 2.3283064365386962890625e-10 $ cat cat /sys/devices/power/events/energy-cores.unit Joules This patch modifies the pmu event alias code to check for the presence of the .unit and .scale files to load the corresponding values. They are then used by perf stat transparently: # perf stat -a -e power/energy-pkg/,power/energy-cores/,cycles -I 1000 sleep 1000 # time counts unit events 1.000214717 3.07 Joules power/energy-pkg/ [100.00%] 1.000214717 0.53 Joules power/energy-cores/ 1.000214717 12965028 cycles [100.00%] 2.000749289 3.01 Joules power/energy-pkg/ 2.000749289 0.52 Joules power/energy-cores/ 2.000749289 15817043 cycles When the event does not have an explicit unit exported by the kernel, nothing is printed. In csv output mode, there will be an empty field. Special thanks to Jiri for providing the supporting code in the parser to trigger reading of the scale and unit files. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: zheng.z.yan@intel.com Cc: bp@alien8.de Cc: maria.n.dimakopoulou@gmail.com Cc: acme@redhat.com Link: http://lkml.kernel.org/r/1384275531-10892-3-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-13 00:58:49 +08:00
if (ret)
return ret;
if (alias->per_pkg)
info->per_pkg = true;
perf stat: Output JSON MetricExpr metric Add generic infrastructure to perf stat to output ratios for "MetricExpr" entries in the event lists. Many events are more useful as ratios than in raw form, typically some count in relation to total ticks. Transfer the MetricExpr information from the alias to the evsel. We mark the events that need to be collected for MetricExpr, and also link the events using them with a pointer. The code is careful to always prefer the right event in the same group to minimize multiplexing errors. At the moment only a single relation is supported. Then add a rblist to the stat shadow code that remembers stats based on the cpu and context. Then finally update and retrieve and print these values similarly to the existing hardcoded perf metrics. We use the simple expression parser added earlier to evaluate the expression. Normally we just output the result without further commentary, but for --metric-only this would lead to empty columns. So for this case use the original event as description. There is no attempt to automatically add the MetricExpr event, if it is missing, however we suggest it to the user, because the user tool doesn't have enough information to reliably construct a group that is guaranteed to schedule. So we leave that to the user. % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' 1.000147889 800,085,181 unc_p_clockticks 1.000147889 93,126,241 unc_p_freq_max_os_cycles # 11.6 2.000448381 800,218,217 unc_p_clockticks 2.000448381 142,516,095 unc_p_freq_max_os_cycles # 17.8 3.000639852 800,243,057 unc_p_clockticks 3.000639852 162,292,689 unc_p_freq_max_os_cycles # 20.3 % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only # time freq_max_os_cycles % 1.000127077 0.9 2.000301436 0.7 3.000456379 0.0 v2: Change from DivideBy to MetricExpr v3: Use expr__ prefix. Support more than one other event. v4: Update description v5: Only print warning message once for multiple PMUs. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170320201711.14142-11-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-21 04:17:08 +08:00
info->metric_expr = alias->metric_expr;
info->metric_name = alias->metric_name;
list_del(&term->list);
free(term);
}
/*
* if no unit or scale foundin aliases, then
* set defaults as for evsel
* unit cannot left to NULL
*/
if (info->unit == NULL)
info->unit = "";
if (info->scale == 0.0)
info->scale = 1.0;
return 0;
}
int perf_pmu__new_format(struct list_head *list, char *name,
int config, unsigned long *bits)
{
struct perf_pmu_format *format;
format = zalloc(sizeof(*format));
if (!format)
return -ENOMEM;
format->name = strdup(name);
format->value = config;
memcpy(format->bits, bits, sizeof(format->bits));
list_add_tail(&format->list, list);
return 0;
}
void perf_pmu__set_format(unsigned long *bits, long from, long to)
{
long b;
if (!to)
to = from;
memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS));
for (b = from; b <= to; b++)
set_bit(b, bits);
}
static int sub_non_neg(int a, int b)
{
if (b > a)
return 0;
return a - b;
}
static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
struct perf_pmu_alias *alias)
{
struct parse_events_term *term;
int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
list_for_each_entry(term, &alias->terms, list) {
if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
used += snprintf(buf + used, sub_non_neg(len, used),
",%s=%s", term->config,
term->val.str);
}
if (sub_non_neg(len, used) > 0) {
buf[used] = '/';
used++;
}
if (sub_non_neg(len, used) > 0) {
buf[used] = '\0';
used++;
} else
buf[len - 1] = '\0';
return buf;
}
static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
struct perf_pmu_alias *alias)
{
snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
return buf;
}
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
struct sevent {
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
char *name;
char *desc;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
char *topic;
char *str;
char *pmu;
char *metric_expr;
char *metric_name;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
};
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
static int cmp_sevent(const void *a, const void *b)
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
{
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
const struct sevent *as = a;
const struct sevent *bs = b;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
/* Put extra events last */
if (!!as->desc != !!bs->desc)
return !!as->desc - !!bs->desc;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
if (as->topic && bs->topic) {
int n = strcmp(as->topic, bs->topic);
if (n)
return n;
}
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
return strcmp(as->name, bs->name);
}
static void wordwrap(char *s, int start, int max, int corr)
{
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
int column = start;
int n;
while (*s) {
int wlen = strcspn(s, " \t");
if (column + wlen >= max && column > start) {
printf("\n%*s", start, "");
column = start + corr;
}
n = printf("%s%.*s", column > start ? " " : "", wlen, s);
if (n <= 0)
break;
s += wlen;
column += n;
s = ltrim(s);
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
}
}
void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
bool long_desc, bool details_flag)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
char buf[1024];
int printed = 0;
int len, j;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
struct sevent *aliases;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
int numdesc = 0;
int columns = pager_get_columns();
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
char *topic = NULL;
pmu = NULL;
len = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list)
len++;
if (pmu->selectable)
len++;
}
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
aliases = zalloc(sizeof(struct sevent) * len);
if (!aliases)
goto out_enomem;
pmu = NULL;
j = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list) {
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
char *name = alias->desc ? alias->name :
format_alias(buf, sizeof(buf), pmu, alias);
bool is_cpu = !strcmp(pmu->name, "cpu");
if (event_glob != NULL &&
!(strglobmatch_nocase(name, event_glob) ||
(!is_cpu && strglobmatch_nocase(alias->name,
event_glob)) ||
(alias->topic &&
strglobmatch_nocase(alias->topic, event_glob))))
continue;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
if (is_cpu && !name_only && !alias->desc)
name = format_alias_or(buf, sizeof(buf), pmu, alias);
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
aliases[j].name = name;
if (is_cpu && !name_only && !alias->desc)
aliases[j].name = format_alias_or(buf,
sizeof(buf),
pmu, alias);
aliases[j].name = strdup(aliases[j].name);
if (!aliases[j].name)
goto out_enomem;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
aliases[j].desc = long_desc ? alias->long_desc :
alias->desc;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
aliases[j].topic = alias->topic;
aliases[j].str = alias->str;
aliases[j].pmu = pmu->name;
aliases[j].metric_expr = alias->metric_expr;
aliases[j].metric_name = alias->metric_name;
j++;
}
if (pmu->selectable &&
(event_glob == NULL || strglobmatch(pmu->name, event_glob))) {
char *s;
if (asprintf(&s, "%s//", pmu->name) < 0)
goto out_enomem;
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
aliases[j].name = s;
j++;
}
}
len = j;
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (j = 0; j < len; j++) {
/* Skip duplicates */
if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
continue;
if (name_only) {
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
printf("%s ", aliases[j].name);
continue;
}
if (aliases[j].desc && !quiet_flag) {
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
if (numdesc++ == 0)
printf("\n");
perf list jevents: Add support for event list topics Add support to group the output of perf list by the Topic field in the JSON file. Example output: % perf list ... Cache: l1d.replacement [L1D data line replacements] l1d_pend_miss.pending [L1D miss oustandings duration in cycles] l1d_pend_miss.pending_cycles [Cycles with L1D load Misses outstanding] l2_l1d_wb_rqsts.all [Not rejected writebacks from L1D to L2 cache lines in any state] l2_l1d_wb_rqsts.hit_e [Not rejected writebacks from L1D to L2 cache lines in E state] l2_l1d_wb_rqsts.hit_m [Not rejected writebacks from L1D to L2 cache lines in M state] ... Pipeline: arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] baclears.any [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by other branch handling mechanisms at the front end] br_inst_exec.all_branches [Speculative and retired branches] br_inst_exec.all_conditional [Speculative and retired macro-conditional branches] br_inst_exec.all_direct_jmp [Speculative and retired macro-unconditional branches excluding calls and indirects] br_inst_exec.all_direct_near_call [Speculative and retired direct near calls] br_inst_exec.all_indirect_jump_non_call_ret Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-14-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:50 +08:00
if (aliases[j].topic && (!topic ||
strcmp(topic, aliases[j].topic))) {
printf("%s%s:\n", topic ? "\n" : "",
aliases[j].topic);
topic = aliases[j].topic;
}
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
printf(" %-50s\n", aliases[j].name);
printf("%*s", 8, "[");
wordwrap(aliases[j].desc, 8, columns, 0);
printf("]\n");
if (details_flag) {
printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
if (aliases[j].metric_name)
printf(" MetricName: %s", aliases[j].metric_name);
if (aliases[j].metric_expr)
printf(" MetricExpr: %s", aliases[j].metric_expr);
putchar('\n');
}
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
} else
printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
printed++;
}
if (printed && pager_in_use())
printf("\n");
out_free:
for (j = 0; j < len; j++)
perf pmu: Support alias descriptions Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-16 06:24:43 +08:00
zfree(&aliases[j].name);
zfree(&aliases);
return;
out_enomem:
printf("FATAL: not enough memory to print PMU events\n");
if (aliases)
goto out_free;
}
bool pmu_have_event(const char *pname, const char *name)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
pmu = NULL;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
if (strcmp(pname, pmu->name))
continue;
list_for_each_entry(alias, &pmu->aliases, list)
if (!strcmp(alias->name, name))
return true;
}
return false;
}
static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
{
struct stat st;
char path[PATH_MAX];
const char *sysfs;
sysfs = sysfs__mountpoint();
if (!sysfs)
return NULL;
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
if (stat(path, &st) < 0)
return NULL;
return fopen(path, "r");
}
int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
...)
{
va_list args;
FILE *file;
int ret = EOF;
va_start(args, fmt);
file = perf_pmu__open_file(pmu, name);
if (file) {
ret = vfscanf(file, fmt, args);
fclose(file);
}
va_end(args);
return ret;
}