Re: [dpdk-dev] [EXT] [PATCH v1 5/5] app/eventdev: remove unnecessary barriers for order test

[Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>]

>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>
>---
> app/test-eventdev/test_order_common.h | 2 --
> 1 file changed, 2 deletions(-)
>
>diff --git a/app/test-eventdev/test_order_common.h b/app/test-
>eventdev/test_order_common.h
>index 5ef840493..cd9d6009e 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\
>--
>2.25.1