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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-23 17:55:18 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-25 21:39:05 +0200
commit41f95331b972a039f519ae0c70f051b7121f7346 (patch)
tree3feee1897eae84234102fb05a6e48031a2a66eb3 /include
parent7c6a1c65bbd3be688e581511f45818663efc1877 (diff)
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op-kernel-dev-41f95331b972a039f519ae0c70f051b7121f7346.tar.gz
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')
-rw-r--r--include/linux/perf_counter.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index e7213e4..489d5cb 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.
*
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