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perf_counter: re-arrange the perf_event_type

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Breaks ABI yet again :-)

Change the event type so that [0, 2^31-1] are regular event types, but
[2^31, 2^32-1] forms a bitmask for overflow events.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Orig-LKML-Reference: <20090330171024.047961770@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2009-03-30 19:07:12 +02:00
committed by Ingo Molnar
parent 78d613eb12
commit 5ed00415e3
2 changed files with 29 additions and 33 deletions
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6
include/linux/perf_counter.h
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@ -210,13 +210,15 @@ struct perf_event_header {
};
enum perf_event_type {
PERF_EVENT_IP = 0,
PERF_EVENT_GROUP = 1,
PERF_EVENT_MMAP = 2,
PERF_EVENT_MUNMAP = 3,
__PERF_EVENT_TID = 0x100,
PERF_EVENT_OVERFLOW = 1UL << 31,
__PERF_EVENT_IP = 1UL << 30,
__PERF_EVENT_TID = 1UL << 29,
};
#ifdef __KERNEL__