From: Intel <intel.com>
Date: Mon, 3 Jun 2013 00:00:00 +0000 (+0000)
Subject: eal: memory barriers use intrinsic functions
X-Git-Tag: spdx-start~11261
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d6772940c09e156d3bdb6e2dbefbe95bf794a89a;p=dpdk.git

eal: memory barriers use intrinsic functions

Signed-off-by: Intel
---

diff --git a/lib/librte_eal/common/include/rte_atomic.h b/lib/librte_eal/common/include/rte_atomic.h
index 67eff12363..069ce46737 100644
--- a/lib/librte_eal/common/include/rte_atomic.h
+++ b/lib/librte_eal/common/include/rte_atomic.h
@@ -64,7 +64,7 @@ extern "C" {
  * Guarantees that the LOAD and STORE operations generated before the
  * barrier occur before the LOAD and STORE operations generated after.
  */
-#define rte_mb()  asm volatile("mfence;" : : : "memory")
+#define	rte_mb() _mm_mfence()
 
 /**
  * Write memory barrier.
@@ -72,7 +72,7 @@ extern "C" {
  * Guarantees that the STORE operations generated before the barrier
  * occur before the STORE operations generated after.
  */
-#define rte_wmb() asm volatile("sfence;" : : : "memory")
+#define	rte_wmb() _mm_sfence()
 
 /**
  * Read memory barrier.
@@ -80,7 +80,7 @@ extern "C" {
  * Guarantees that the LOAD operations generated before the barrier
  * occur before the LOAD operations generated after.
  */
-#define rte_rmb() asm volatile("lfence;" : : : "memory")
+#define	rte_rmb() _mm_lfence()
 
 #include <emmintrin.h>