In function count_cleanup(), there is no need to run smp_mb( ) in between
statement writing to and statement reading from the same variable, stopflag.
Remove smp_mb().
Suggested-by: Akira Yokosawa <akiyks@xxxxxxxxx>
Signed-off-by: Junchang Wang <junchangwang@xxxxxxxxx>
---
CodeSamples/count/count_stat_eventual.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/CodeSamples/count/count_stat_eventual.c b/CodeSamples/count/count_stat_eventual.c
index 464de30..0e13fc4 100644
--- a/CodeSamples/count/count_stat_eventual.c
+++ b/CodeSamples/count/count_stat_eventual.c
@@ -68,7 +68,6 @@ void count_init(void)
void count_cleanup(void)
{
WRITE_ONCE(stopflag, 1);
- smp_mb();
while (READ_ONCE(stopflag) < 3)
poll(NULL, 0, 1);
smp_mb();
--
2.7.4
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