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>
diff --git a/kernel/trace/ring_buffer_benchmark.c b/kernel/trace/ring_buffer_benchmark.c
index 9e00fd1..6df9a83 100644
--- a/kernel/trace/ring_buffer_benchmark.c
+++ b/kernel/trace/ring_buffer_benchmark.c
@@ -288,8 +288,6 @@
/* 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);
}