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authorPaul Mackerras <paulus@samba.org>2009-06-30 16:07:19 +1000
committerIngo Molnar <mingo@elte.hu>2009-06-30 12:00:16 +0200
commit57e7986ed142417498155ebcd5eaf617ac37136d (patch)
tree81ce9acd79ee7e6383dfd5cdadc4e016a012990e /include
parent051ae7f7344f453616b6b10332d4d8e1d40ed823 (diff)
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.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 3078e23c91e..5e970c7d3fd 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;