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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-03-30 19:07:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:30:42 +0200 |
| commit | 5ed00415e304203a0a9dcaef226d6d3f1106070e (patch) | |
| tree | 5e1d53fcae6ea973dfb61972f38c269a8fe095bc /include/linux/perf_counter.h | |
| parent | 78d613eb129fc4edf0e2cabfcc6a4c5285482d21 (diff) | |
| download | lwn-5ed00415e304203a0a9dcaef226d6d3f1106070e.tar.gz lwn-5ed00415e304203a0a9dcaef226d6d3f1106070e.zip | |
perf_counter: re-arrange the perf_event_type
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>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 037a81145aca..edf5bfb7ff51 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -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__ |