[dpdk-dev] [PATCH v1 2/4] net/mlx4: replace SMP barrier with C11 barriers
From: Feifei Wang <hidden>
Date: 2021-03-18 07:19:09
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Replace SMP barrier with atomic thread fence. Signed-off-by: Feifei Wang <redacted> Reviewed-by: Ruifeng Wang <redacted> --- drivers/net/mlx4/mlx4_mr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx4/mlx4_mr.c b/drivers/net/mlx4/mlx4_mr.c
index cfd7d4a9c..503e8a7bb 100644
--- a/drivers/net/mlx4/mlx4_mr.c
+++ b/drivers/net/mlx4/mlx4_mr.c@@ -951,11 +951,11 @@ mlx4_mr_mem_event_free_cb(struct rte_eth_dev *dev, const void *addr, size_t len) priv->mr.dev_gen); /* Flush local caches by propagating invalidation across cores. - * rte_smp_wmb is to keep the order that dev_gen updated before + * release-fence is to keep the order that dev_gen updated before * rebuilding global cache. Therefore, other core can flush their * local cache on time. */ - rte_smp_wmb(); + rte_atomic_thread_fence(__ATOMIC_RELEASE); mr_rebuild_dev_cache(dev); } rte_rwlock_write_unlock(&priv->mr.rwlock);
--
2.25.1