[v2,2/2] mcslock: use wait until equal API for tight loop
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Commit Message
Instead of polling for previous lock holder unlocking, use
wait_until_equal API.
Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
lib/eal/include/generic/rte_mcslock.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
@@ -84,8 +84,7 @@ rte_mcslock_lock(rte_mcslock_t **msl, rte_mcslock_t *me)
* to spin on me->locked until the previous lock holder resets
* the me->locked using mcslock_unlock().
*/
- while (__atomic_load_n(&me->locked, __ATOMIC_ACQUIRE))
- rte_pause();
+ rte_wait_until_equal_32((uint32_t *)&me->locked, 0, __ATOMIC_ACQUIRE);
}
/**