mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-25 20:14:25 +08:00
e0549f11e8
Backporting jbd2 plugin. Backported from Steven Rostedt's trace-cmd repo (HEAD 0f2c2fb): git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git This plugin adds field resolving functions for following tracepoint events: jbd2:jbd2_checkpoint_stats jbd2:jbd2_run_stats The diff of 'perf script' output generated by old and new code: (data was generated by 'perf record -e 'jbd2:jbd2_run_stats,jbd2:jbd2_checkpoint_stats' -a') --- script.jbd2.old +++ script.jbd2.new - jbd2/dm-3-8 576 [000] 2983.748423: jbd2:jbd2_checkpoint_stats: [FAILED TO PARSE] dev=265289731 tid=0x3f2bbb chp_time=0x0 forced_to_close=0 written=0 dropped=2 + jbd2/dm-3-8 576 [000] 2983.748423: jbd2:jbd2_checkpoint_stats: dev 253,3 tid 4139963 chp_time 0 forced_to_close 0 written 0 dropped 2 - jbd2/dm-3-8 576 [000] 2983.852789: jbd2:jbd2_run_stats: [FAILED TO PARSE] dev=265289731 tid=0x3f2bc0 wait=0x0 request_delay=0x0 running=0x138d locked=0x0 flushing=0x0 logging=0x68 handle_count=2995 blocks=17 blocks_logged=18 + jbd2/dm-3-8 576 [000] 2983.852789: jbd2:jbd2_run_stats: dev 253,3 tid 4139968 wait 0 request_delay 0 running 5005 locked 0 flushing 0 logging 104 handle_count 2995 blocks 17 blocks_logged 18 This plugin also adds jbd2_dev_to_name function, which was removed from jdb2 tracepoints recently. Keeping it in for backward compatibility reasons. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1386076182-14484-13-git-send-email-jolsa@redhat.com Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
|
|
* Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License (not later!)
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this program; if not, see <http://www.gnu.org/licenses>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "event-parse.h"
|
|
|
|
#define MINORBITS 20
|
|
#define MINORMASK ((1U << MINORBITS) - 1)
|
|
|
|
#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
|
|
#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
|
|
|
|
unsigned long long process_jbd2_dev_to_name(struct trace_seq *s,
|
|
unsigned long long *args)
|
|
{
|
|
unsigned int dev = args[0];
|
|
|
|
trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev));
|
|
return 0;
|
|
}
|
|
|
|
unsigned long long process_jiffies_to_msecs(struct trace_seq *s,
|
|
unsigned long long *args)
|
|
{
|
|
unsigned long long jiffies = args[0];
|
|
|
|
trace_seq_printf(s, "%lld", jiffies);
|
|
return jiffies;
|
|
}
|
|
|
|
int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
|
|
{
|
|
pevent_register_print_function(pevent,
|
|
process_jbd2_dev_to_name,
|
|
PEVENT_FUNC_ARG_STRING,
|
|
"jbd2_dev_to_name",
|
|
PEVENT_FUNC_ARG_INT,
|
|
PEVENT_FUNC_ARG_VOID);
|
|
|
|
pevent_register_print_function(pevent,
|
|
process_jiffies_to_msecs,
|
|
PEVENT_FUNC_ARG_LONG,
|
|
"jiffies_to_msecs",
|
|
PEVENT_FUNC_ARG_LONG,
|
|
PEVENT_FUNC_ARG_VOID);
|
|
return 0;
|
|
}
|