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| author | Tom Zanussi <tom.zanussi@linux.intel.com> | 2016-03-03 12:54:51 -0600 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-04-19 12:18:04 -0400 |
| commit | 316961988b5ec71bbf4b2ad447662770349aec13 (patch) | |
| tree | 81e09f98e7d0508f70eb6946c9cca38a213b6908 /kernel/trace/trace.c | |
| parent | 6b4827ad028a1ab2fc4dcf1f5e6e077018d1b770 (diff) | |
| download | lwn-316961988b5ec71bbf4b2ad447662770349aec13.tar.gz lwn-316961988b5ec71bbf4b2ad447662770349aec13.zip | |
tracing: Add hist trigger 'syscall' modifier
Allow users to have syscall id fields displayed as syscall names in
the output by appending '.syscall' to field names:
# echo hist:keys=aaa.syscall ... \
[ if filter] > event/trigger
Link: http://lkml.kernel.org/r/2bab1e59933d76a14b545bd2e02f80b8b08ac4d3.1457029949.git.tom.zanussi@linux.intel.com
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Tested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 58a8bee50c6e..0dd23c5b1c34 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3858,7 +3858,8 @@ static const char readme_msg[] = "\t .hex display a number as a hex value\n" "\t .sym display an address as a symbol\n" "\t .sym-offset display an address as a symbol and offset\n" - "\t .execname display a common_pid as a program name\n\n" + "\t .execname display a common_pid as a program name\n" + "\t .syscall display a syscall id as a syscall name\n\n" "\t The 'pause' parameter can be used to pause an existing hist\n" "\t trigger or to start a hist trigger but not log any events\n" "\t until told to do so. 'continue' can be used to start or\n" |