diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-22 14:34:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-25 21:39:05 +0200 |
| commit | 7f8b4e4e0988dadfd22330fd147ad2453e19f510 (patch) | |
| tree | b57c6b0fbfd3718dbc6f27bd7f422bb276c11469 | |
| parent | 41f95331b972a039f519ae0c70f051b7121f7346 (diff) | |
perf_counter: Add scale information to the mmap control page
Add the needed time scale to the self-profile mmap information.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/linux/perf_counter.h | 4 | ||||
| -rw-r--r-- | kernel/perf_counter.c | 6 |
2 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 489d5cbfbcca..bcbf1c43ed42 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -232,12 +232,14 @@ struct perf_counter_mmap_page { __u32 lock; /* seqlock for synchronization */ __u32 index; /* hardware counter identifier */ __s64 offset; /* add to hardware counter value */ + __u64 time_enabled; /* time counter active */ + __u64 time_running; /* time counter on cpu */ /* * Hole for extension of the self monitor capabilities */ - __u64 __reserved[125]; /* align to 1k */ + __u64 __reserved[123]; /* align to 1k */ /* * Control data for the mmap() data buffer. diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index c2b19c111718..23614adab475 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -1782,6 +1782,12 @@ void perf_counter_update_userpage(struct perf_counter *counter) if (counter->state == PERF_COUNTER_STATE_ACTIVE) userpg->offset -= atomic64_read(&counter->hw.prev_count); + userpg->time_enabled = counter->total_time_enabled + + atomic64_read(&counter->child_total_time_enabled); + + userpg->time_running = counter->total_time_running + + atomic64_read(&counter->child_total_time_running); + barrier(); ++userpg->lock; preempt_enable(); |