X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_ring%2Frte_ring_c11_mem.h;h=dc49a998fd302d8f43bc2033d6660ddb889ff40e;hb=86757c2c3ed5006940f93725d39131dfb0d09b60;hp=7bc74a4cb081eba8268391b786b95922a87ecf40;hpb=5d08fecdd39f2373713a0475b75a4126800c9acf;p=dpdk.git

diff --git a/lib/librte_ring/rte_ring_c11_mem.h b/lib/librte_ring/rte_ring_c11_mem.h
index 7bc74a4cb0..dc49a998fd 100644
--- a/lib/librte_ring/rte_ring_c11_mem.h
+++ b/lib/librte_ring/rte_ring_c11_mem.h
@@ -66,6 +66,9 @@ __rte_ring_move_prod_head(struct rte_ring *r, unsigned int is_sp,
 		/* Reset n to the initial burst count */
 		n = max;
 
+		/* Ensure the head is read before tail */
+		__atomic_thread_fence(__ATOMIC_ACQUIRE);
+
 		/* load-acquire synchronize with store-release of ht->tail
 		 * in update_tail.
 		 */
@@ -139,6 +142,9 @@ __rte_ring_move_cons_head(struct rte_ring *r, int is_sc,
 		/* Restore n as it may change every loop */
 		n = max;
 
+		/* Ensure the head is read before tail */
+		__atomic_thread_fence(__ATOMIC_ACQUIRE);
+
 		/* this load-acquire synchronize with store-release of ht->tail
 		 * in update_tail.
 		 */