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perf, x86: Restrict the ANY flag

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The ANY flag can show SMT data of another task (like 'top'),
so we want to disable it when system-wide profiling is
disabled.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-03-02 12:35:37 +01:00
committed by Ingo Molnar
parent bb1165d688
commit 320ebf09cb
3 changed files with 18 additions and 15 deletions
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15
include/linux/perf_event.h
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@@ -857,6 +857,21 @@ extern int sysctl_perf_event_paranoid;
extern int sysctl_perf_event_mlock;
extern int sysctl_perf_event_sample_rate;
static inline bool perf_paranoid_tracepoint_raw(void)
{
return sysctl_perf_event_paranoid > -1;
}
static inline bool perf_paranoid_cpu(void)
{
return sysctl_perf_event_paranoid > 0;
}
static inline bool perf_paranoid_kernel(void)
{
return sysctl_perf_event_paranoid > 1;
}
extern void perf_event_init(void);
extern void perf_tp_event(int event_id, u64 addr, u64 count, void *record, int entry_size);
extern void perf_bp_event(struct perf_event *event, void *data);