Signed-off-by: Junchang Wang <junchangwang@xxxxxxxxx>
---
CodeSamples/count/count_stat_eventual.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/CodeSamples/count/count_stat_eventual.c b/CodeSamples/count/count_stat_eventual.c
index cbde4aa..2caebfd 100644
--- a/CodeSamples/count/count_stat_eventual.c
+++ b/CodeSamples/count/count_stat_eventual.c
@@ -40,15 +40,15 @@ void *eventual(void *arg)
int t;
unsigned long sum;
- while (stopflag < 3) {
+ while (READ_ONCE(stopflag) < 3) {
sum = 0;
for_each_thread(t)
sum += READ_ONCE(per_thread(counter, t));
WRITE_ONCE(global_count, sum);
poll(NULL, 0, 1);
- if (stopflag) {
+ if (READ_ONCE(stopflag)) {
smp_mb();
- stopflag++;
+ WRITE_ONCE(stopflag, READ_ONCE(stopflag) + 1);
}
}
return NULL;
@@ -66,8 +66,9 @@ void count_init(void)
void count_cleanup(void)
{
- stopflag = 1;
- while (stopflag < 3)
+ WRITE_ONCE(stopflag, 1);
+ smp_mb();
+ while (READ_ONCE(stopflag) < 3)
poll(NULL, 0, 1);
smp_mb();
}
--
2.7.4
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