mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-26 21:54:11 +08:00
f3b3614a28
Introduce a new option to record PERF_RECORD_NAMESPACES events emitted
by the kernel when fork, clone, setns or unshare are invoked. And update
perf-record documentation with the new option to record namespace
events.
Committer notes:
Combined it with a later patch to allow printing it via 'perf report -D'
and be able to test the feature introduced in this patch. Had to move
here also perf_ns__name(), that was introduced in another later patch.
Also used PRIu64 and PRIx64 to fix the build in some enfironments wrt:
util/event.c:1129:39: error: format '%lx' expects argument of type 'long unsigned int', but argument 6 has type 'long long unsigned int' [-Werror=format=]
ret += fprintf(fp, "%u/%s: %lu/0x%lx%s", idx
^
Testing it:
# perf record --namespaces -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.083 MB perf.data (423 samples) ]
#
# perf report -D
<SNIP>
3 2028902078892 0x115140 [0xa0]: PERF_RECORD_NAMESPACES 14783/14783 - nr_namespaces: 7
[0/net: 3/0xf0000081, 1/uts: 3/0xeffffffe, 2/ipc: 3/0xefffffff, 3/pid: 3/0xeffffffc,
4/user: 3/0xeffffffd, 5/mnt: 3/0xf0000000, 6/cgroup: 3/0xeffffffb]
0x1151e0 [0x30]: event: 9
.
. ... raw event: size 48 bytes
. 0000: 09 00 00 00 02 00 30 00 c4 71 82 68 0c 7f 00 00 ......0..q.h....
. 0010: a9 39 00 00 a9 39 00 00 94 28 fe 63 d8 01 00 00 .9...9...(.c....
. 0020: 03 00 00 00 00 00 00 00 ce c4 02 00 00 00 00 00 ................
<SNIP>
NAMESPACES events: 1
<SNIP>
#
Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sargun Dhillon <sargun@sargun.me>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/148891930386.25309.18412039920746995488.stgit@hbathini.in.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
#ifndef _PERF_PERF_H
|
|
#define _PERF_PERF_H
|
|
|
|
#include <time.h>
|
|
#include <stdbool.h>
|
|
#include <linux/types.h>
|
|
#include <linux/perf_event.h>
|
|
|
|
extern bool test_attr__enabled;
|
|
void test_attr__init(void);
|
|
void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
|
|
int fd, int group_fd, unsigned long flags);
|
|
|
|
#define HAVE_ATTR_TEST
|
|
#include "perf-sys.h"
|
|
|
|
static inline unsigned long long rdclock(void)
|
|
{
|
|
struct timespec ts;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
|
|
}
|
|
|
|
#define MAX_NR_CPUS 1024
|
|
|
|
extern const char *input_name;
|
|
extern bool perf_host, perf_guest;
|
|
extern const char perf_version_string[];
|
|
|
|
void pthread__unblock_sigwinch(void);
|
|
|
|
#include "util/target.h"
|
|
|
|
struct record_opts {
|
|
struct target target;
|
|
bool group;
|
|
bool inherit_stat;
|
|
bool no_buffering;
|
|
bool no_inherit;
|
|
bool no_inherit_set;
|
|
bool no_samples;
|
|
bool raw_samples;
|
|
bool sample_address;
|
|
bool sample_weight;
|
|
bool sample_time;
|
|
bool sample_time_set;
|
|
bool sample_cpu;
|
|
bool period;
|
|
bool running_time;
|
|
bool full_auxtrace;
|
|
bool auxtrace_snapshot_mode;
|
|
bool record_namespaces;
|
|
bool record_switch_events;
|
|
bool all_kernel;
|
|
bool all_user;
|
|
bool tail_synthesize;
|
|
bool overwrite;
|
|
bool ignore_missing_thread;
|
|
unsigned int freq;
|
|
unsigned int mmap_pages;
|
|
unsigned int auxtrace_mmap_pages;
|
|
unsigned int user_freq;
|
|
u64 branch_stack;
|
|
u64 sample_intr_regs;
|
|
u64 default_interval;
|
|
u64 user_interval;
|
|
size_t auxtrace_snapshot_size;
|
|
const char *auxtrace_snapshot_opts;
|
|
bool sample_transaction;
|
|
unsigned initial_delay;
|
|
bool use_clockid;
|
|
clockid_t clockid;
|
|
unsigned int proc_map_timeout;
|
|
};
|
|
|
|
struct option;
|
|
extern const char * const *record_usage;
|
|
extern struct option *record_options;
|
|
#endif
|