From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 30 Nov 2010 17:49:55 +0000 (+0000)
Subject: perf session: Allocate chunks of sample objects
X-Git-Tag: v2.6.38-rc1~490^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c891f3840a7a330c96d7203d4bb5be6fa033724;p=pandora-kernel.git

perf session: Allocate chunks of sample objects

The ordered sample code allocates singular reference objects struct
sample_queue which have 48byte size on 64bit and 20 bytes on 32bit. That's
silly. Allocate ~64k sized chunks and hand them out.

Performance gain: ~ 15%

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20101130163820.398713983@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

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