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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-11-30 17:49:53 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-11-30 20:04:18 -0200 |
| commit | 020bb75a6deeca5ebeae531dc7378c157affc8fd (patch) | |
| tree | 1e103a173a5454adee9235c52558eef22fc24214 /tools/perf/util/session.h | |
| parent | fe17420784a6d3602e98f798731369fa05936cbe (diff) | |
| download | op-kernel-dev-020bb75a6deeca5ebeae531dc7378c157affc8fd.zip op-kernel-dev-020bb75a6deeca5ebeae531dc7378c157affc8fd.tar.gz | |
perf session: Cache sample objects
When the sample queue is flushed we free the sample reference objects. Though
we need to malloc new objects when we process further. Stop the malloc/free
orgy and cache the already allocated object for resuage. Only allocate when
the cache is empty.
Performance gain: ~ 10%
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20101130163820.338488630@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.h')
| -rw-r--r-- | tools/perf/util/session.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index a00f32e..e4a7ff2 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -18,6 +18,7 @@ struct ordered_samples { u64 next_flush; u64 max_timestamp; struct list_head samples; + struct list_head sample_cache; struct sample_queue *last_sample; }; |
