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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-04-02 11:12:01 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-06 09:30:45 +0200
commitc457810ab4a825161aec6ef71b581e1bc8febd1a (patch)
treeeccb22f8c868c4d8807657658027261eb97ed37f /include
parent8a057d84912f36e53f970c4d177cb4bb6b2f9e08 (diff)
perf_counter: per event wakeups
By request, provide a way to request a wakeup every 'n' events instead of every page of output. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Orig-LKML-Reference: <20090402091319.323309784@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/perf_counter.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 06a6fba9f53..5428ba120d7 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -145,7 +145,7 @@ struct perf_counter_hw_event {
__reserved_1 : 53;
__u32 extra_config_len;
- __u32 __reserved_4;
+ __u32 wakeup_events; /* wakeup every n events */
__u64 __reserved_2;
__u64 __reserved_3;
@@ -321,6 +321,7 @@ struct perf_mmap_data {
int nr_pages;
atomic_t wakeup;
atomic_t head;
+ atomic_t events;
struct perf_counter_mmap_page *user_page;
void *data_pages[0];
};