diff options
| author | Paul Mackerras <paulus@samba.org> | 2009-06-30 08:07:19 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-30 12:00:16 +0200 |
| commit | 57e7986ed142417498155ebcd5eaf617ac37136d (patch) | |
| tree | 81ce9acd79ee7e6383dfd5cdadc4e016a012990e /include | |
| parent | perf_counter tools: Reduce perf stat measurement overhead/skew (diff) | |
| download | linux-57e7986ed142417498155ebcd5eaf617ac37136d.tar.xz linux-57e7986ed142417498155ebcd5eaf617ac37136d.zip | |
perf_counter: Provide a way to enable counters on exec
This provides a way to mark a counter to be enabled on the next
exec. This is useful for measuring the total activity of a
program without including overhead from the process that
launches it.
This also changes the perf stat command to use this new
facility.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <19017.43927.838745.689203@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/perf_counter.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 3078e23c91eb..5e970c7d3fd5 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -179,8 +179,9 @@ struct perf_counter_attr { comm : 1, /* include comm data */ freq : 1, /* use freq, not period */ inherit_stat : 1, /* per task counts */ + enable_on_exec : 1, /* next exec enables */ - __reserved_1 : 52; + __reserved_1 : 51; __u32 wakeup_events; /* wakeup every n events */ __u32 __reserved_2; |