diff options
| author | Peter Zijlstra <[email protected]> | 2009-05-20 12:21:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2009-05-20 12:43:33 +0200 |
| commit | 26b119bc811a73bac6ecf95bdf284bf31c7955f0 (patch) | |
| tree | cc8b39284012c27c4014c253655cff7ee95f79ce /include/linux | |
| parent | d7b629a34fc4134a43c730b5f0197855dc4948d0 (diff) | |
perf_counter: Log irq_period changes
For the dynamic irq_period code, log whenever we change the period so that
analyzing code can normalize the event flow.
[ Impact: add new feature to allow more precise profiling ]
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Corey Ashford <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Marcelo Tosatti <[email protected]>
Cc: John Kacur <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/perf_counter.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c8c1dfc22c93..f612941ef46e 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -258,6 +258,14 @@ enum perf_event_type { PERF_EVENT_COMM = 3, /* + * struct { + * struct perf_event_header header; + * u64 irq_period; + * }; + */ + PERF_EVENT_PERIOD = 4, + + /* * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field * will be PERF_RECORD_* * |