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perf counters: add prctl interface to disable/enable counters

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Add a way for self-monitoring tasks to disable/enable counters summarily,
via a prctl:

	PR_TASK_PERF_COUNTERS_DISABLE		31
	PR_TASK_PERF_COUNTERS_ENABLE		32

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2008-12-11 14:59:31 +01:00
parent bae43c9945
commit 1d1c7ddbfa
4 changed files with 93 additions and 7 deletions
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3
include/linux/prctl.h
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@@ -85,4 +85,7 @@
#define PR_SET_TIMERSLACK 29
#define PR_GET_TIMERSLACK 30
#define PR_TASK_PERF_COUNTERS_DISABLE 31
#define PR_TASK_PERF_COUNTERS_ENABLE 32
#endif /* _LINUX_PRCTL_H */