diff options
| author | Tom Zanussi <tom.zanussi@linux.intel.com> | 2016-03-03 12:54:50 -0600 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-04-19 12:17:56 -0400 |
| commit | 6b4827ad028a1ab2fc4dcf1f5e6e077018d1b770 (patch) | |
| tree | 08aee91c12713448f419795c09df2d3c2260c9a6 /kernel/trace/trace.c | |
| parent | c6afad49d127f6d7c9957319f55173a2198b1ba8 (diff) | |
| download | lwn-6b4827ad028a1ab2fc4dcf1f5e6e077018d1b770.tar.gz lwn-6b4827ad028a1ab2fc4dcf1f5e6e077018d1b770.zip | |
tracing: Add hist trigger 'execname' modifier
Allow users to have common_pid field values displayed as program names
in the output by appending '.execname' to a common_pid field name:
# echo hist:keys=common_pid.execname ... \
[ if filter] > event/trigger
Link: http://lkml.kernel.org/r/e172e81f10f5b8d1f08450e3763c850f39fbf698.1457029949.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 34459eb0c844..58a8bee50c6e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3857,7 +3857,8 @@ static const char readme_msg[] = "\t following modifiers to the field name, as applicable:\n\n" "\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\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 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" |