[dpdk-dev] [EXT] [PATCH v1 3/5] app/eventdev: replace wmb with thread fence for perf test

[Pavan Nikhilesh Bhagavatula]

>Simply replace rte_smp barrier with atomic threand fence.
>
>Signed-off-by: Phil Yang <phil.yang at arm.com>
>Signed-off-by: Feifei Wang <feifei.wang2 at arm.com>
>Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
Acked-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
>---
> app/test-eventdev/test_perf_common.h | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
>diff --git a/app/test-eventdev/test_perf_common.h b/app/test-
>eventdev/test_perf_common.h
>index e7233e5a5..9785dc3e2 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)) {
>--
>2.25.1