From: Feifei Wang <feifei.wang2@arm.com>
Date: Thu, 14 Jan 2021 07:08:28 +0000 (+0800)
Subject: app/eventdev: replace a barrier with thread fence
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=37f60fd6389c7b78887c24e131bee0ca0aab1ac1;p=dpdk.git

app/eventdev: replace a barrier with thread fence

Simply replace rte_smp barrier with atomic threand fence.

Signed-off-by: Phil Yang <phil.yang@arm.com>
Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---

diff --git a/app/test-eventdev/test_perf_common.h b/app/test-eventdev/test_perf_common.h
index e7233e5a5b..9785dc3e23 100644
--- a/app/test-eventdev/test_perf_common.h
+++ b/app/test-eventdev/test_perf_common.h
@@ -98,11 +98,11 @@ perf_process_last_stage(struct rte_mempool *const pool,
 {
 	bufs[count++] = ev->event_ptr;
 
-	/* wmb here ensures event_prt is stored before
-	 * updating the number of processed packets
-	 * for worker lcores
+	/* release fence here ensures event_prt is
+	 * stored before updating the number of
+	 * processed packets for worker lcores
 	 */
-	rte_smp_wmb();
+	rte_atomic_thread_fence(__ATOMIC_RELEASE);
 	w->processed_pkts++;
 
 	if (unlikely(count == buf_sz)) {
@@ -122,11 +122,11 @@ perf_process_last_stage_latency(struct rte_mempool *const pool,
 
 	bufs[count++] = ev->event_ptr;
 
-	/* wmb here ensures event_prt is stored before
-	 * updating the number of processed packets
-	 * for worker lcores
+	/* release fence here ensures event_prt is
+	 * stored before updating the number of
+	 * processed packets for worker lcores
 	 */
-	rte_smp_wmb();
+	rte_atomic_thread_fence(__ATOMIC_RELEASE);
 	w->processed_pkts++;
 
 	if (unlikely(count == buf_sz)) {