diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-05-20 12:21:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-20 12:43:33 +0200 |
| commit | 26b119bc811a73bac6ecf95bdf284bf31c7955f0 (patch) | |
| tree | cc8b39284012c27c4014c253655cff7ee95f79ce /include | |
| 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 <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090520102553.298769743@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -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 c8c1dfc22c9..f612941ef46 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_* * |