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ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark 

wake_up_process() has a memory barrier before doing anything, thus adding a
memory barrier before calling it is redundant.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
hifive-unleashed-5.1
Steven Rostedt (Red Hat) 2015-11-03 16:19:02 -05:00 committed by Steven Rostedt
parent 919cd97999
commit 54ed144405
1 changed files with 0 additions and 2 deletions
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2
kernel/trace/ring_buffer_benchmark.c
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@ -288,8 +288,6 @@ static void ring_buffer_producer(void)
/* the completions must be visible before the finish var */
smp_wmb();
reader_finish = 1;
/* finish var visible before waking up the consumer */
smp_wmb();
wake_up_process(consumer);
wait_for_completion(&read_done);
}