From: Feifei Wang <feifei.wang2@arm.com>
Date: Thu, 14 Jan 2021 07:08:30 +0000 (+0800)
Subject: app/eventdev: remove unnecessary barriers in order test
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=7fdc5ce88d33f1e767981c824532f13d86390639;p=dpdk.git

app/eventdev: remove unnecessary barriers in order test

For the wmb in order_process_stage_1 and order_process_stage_invalid in
the order test, they can be removed. This is because when the test results
are wrong, the worker core writes 'true' to t->err. Then other worker
cores, producer cores and the main core will load the 'error' index and
stop testing. So, for the worker cores, no other storing operation needs
to be guaranteed after this when errors happen.

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_order_common.h b/app/test-eventdev/test_order_common.h
index 5ef8404938..cd9d6009ec 100644
--- a/app/test-eventdev/test_order_common.h
+++ b/app/test-eventdev/test_order_common.h
@@ -104,7 +104,6 @@ order_process_stage_1(struct test_order *const t,
 			flow, *order_mbuf_seqn(t, ev->mbuf),
 			expected_flow_seq[flow]);
 		t->err = true;
-		rte_smp_wmb();
 	}
 	/*
 	 * Events from an atomic flow of an event queue can be scheduled only to
@@ -123,7 +122,6 @@ order_process_stage_invalid(struct test_order *const t,
 {
 	evt_err("invalid queue %d", ev->queue_id);
 	t->err = true;
-	rte_smp_wmb();
 }
 
 #define ORDER_WORKER_INIT\