ring-buffer: only periodically call cond_resched to ring-buffer-benchmark
authorSteven Rostedt <srostedt@redhat.com>
Thu, 7 May 2009 18:20:28 +0000 (14:20 -0400)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 7 May 2009 18:20:28 +0000 (14:20 -0400)
commit0574ea421b90e0e45a72c447dd3c2c79ffd8c153
treeec19f007794a8593f1c75f3f2d05c2471346298e
parent65b77242043f74bca6a0d733c0e48ef03a8c9893
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>
kernel/trace/ring_buffer_benchmark.c