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perf_counter: Split the mmap control page in two parts

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Since there are two distinct sections to the control page,
move them apart so that possible extentions don't overlap.

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 2009-06-23 17:55:18 +02:00 committed by Ingo Molnar
parent 7c6a1c65bb
commit 41f95331b9
1 changed files with 6 additions and 0 deletions
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6
include/linux/perf_counter.h
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@ -233,6 +233,12 @@ struct perf_counter_mmap_page {
__u32 index; /* hardware counter identifier */
__s64 offset; /* add to hardware counter value */
/*
* Hole for extension of the self monitor capabilities
*/
__u64 __reserved[125]; /* align to 1k */
/*
* Control data for the mmap() data buffer.
*