From: Steven Rostedt <srostedt@redhat.com>
Date: Thu, 7 May 2009 18:20:28 +0000 (-0400)
Subject: ring-buffer: only periodically call cond_resched to ring-buffer-benchmark
X-Git-Tag: v2.6.31-rc1~401^2~58
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0574ea421b90e0e45a72c447dd3c2c79ffd8c153;p=pandora-kernel.git

ring-buffer: only periodically call cond_resched to ring-buffer-benchmark

Calling cond_resched at every iteration of the loop adds a bit of
overhead to the benchmark.

This patch does two things.

1) only calls cond-resched when CONFIG_PREEMPT is not enabled
2) only calls cond-resched after so many traces has been performed.

[ Impact: less overhead to the ring-buffer-benchmark ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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