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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-23 17:55:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-25 21:39:05 +0200 |
| commit | 41f95331b972a039f519ae0c70f051b7121f7346 (patch) | |
| tree | 3feee1897eae84234102fb05a6e48031a2a66eb3 /include/linux/perf_counter.h | |
| parent | 7c6a1c65bbd3be688e581511f45818663efc1877 (diff) | |
| download | lwn-41f95331b972a039f519ae0c70f051b7121f7346.tar.gz lwn-41f95331b972a039f519ae0c70f051b7121f7346.zip | |
perf_counter: Split the mmap control page in two parts
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>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index e7213e46cf9c..489d5cbfbcca 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -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. * |