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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-11-30 17:49:53 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-11-30 22:04:18 (GMT) |
| commit | 020bb75a6deeca5ebeae531dc7378c157affc8fd (patch) | |
| tree | 1e103a173a5454adee9235c52558eef22fc24214 /kernel/sched_features.h | |
| parent | fe17420784a6d3602e98f798731369fa05936cbe (diff) | |
| download | linux-fsl-qoriq-020bb75a6deeca5ebeae531dc7378c157affc8fd.tar.xz | |
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 'kernel/sched_features.h')
0 files changed, 0 insertions, 0 deletions