[dpdk-dev] [PATCH] net/sfc: relax SW packets/bytes atomic ops memory ordering
From: Andrew Rybchenko <hidden>
Date: 2021-09-17 11:15:32
No barriers are required when stats are incremented or read.
Fixes: 96fd2bd69b58 ("net/sfc: support flow action count in transfer rules")
Cc: stable@dpdk.org
Signed-off-by: Andrew Rybchenko <redacted>
---
drivers/net/sfc/sfc_stats.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/sfc/sfc_stats.h b/drivers/net/sfc/sfc_stats.h
index 2d7ab71f14..aae8243c73 100644
--- a/drivers/net/sfc/sfc_stats.h
+++ b/drivers/net/sfc/sfc_stats.h@@ -53,7 +53,7 @@ sfc_pkts_bytes_add(union sfc_pkts_bytes *st, uint64_t pkts, uint64_t bytes) * core sees both counter updates together. */ __atomic_store_n(&st->pkts_bytes.int128, result.pkts_bytes.int128, - __ATOMIC_RELEASE); + __ATOMIC_RELAXED); #else st->pkts += pkts; st->bytes += bytes;
@@ -68,7 +68,7 @@ sfc_pkts_bytes_get(const union sfc_pkts_bytes *st, union sfc_pkts_bytes *result) { #if SFC_SW_STATS_ATOMIC result->pkts_bytes.int128 = __atomic_load_n(&st->pkts_bytes.int128, - __ATOMIC_ACQUIRE); + __ATOMIC_RELAXED); #else *result = *st; #endif
--
2.30.2