[dpdk-dev] [PATCH] test/mcslock: wait for lcore completion

[Aaron Conole <aconole@redhat.com>]

It's possible that the mcsunlock occurs before the test_mcslock_try has
a chance to execute, which will result in the trylock being successful,
making the test case fail.  Fix this by waiting until all lcores have
completed their test before unlocking the master lock.

Fixes: 32dcb9fd2a22 ("test/mcslock: add MCS queued lock unit test")
Cc: Phil Yang <phil.yang@arm.com>
Cc: Gavin Hu <gavin.hu@arm.com>
Cc: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 app/test/test_mcslock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/test/test_mcslock.c b/app/test/test_mcslock.c
index ed384b81d..e9359df2e 100644
--- a/app/test/test_mcslock.c
+++ b/app/test/test_mcslock.c
@@ -225,8 +225,8 @@ test_mcslock(void)
 	RTE_LCORE_FOREACH_SLAVE(i) {
 		rte_eal_remote_launch(test_mcslock_try, NULL, i);
 	}
-	rte_mcslock_unlock(&p_ml_try, &ml_try_me);
 	rte_eal_mp_wait_lcore();
+	rte_mcslock_unlock(&p_ml_try, &ml_try_me);
 
 	/* Test is_locked API */
 	if (rte_mcslock_is_locked(p_ml)) {
-- 
2.21.0