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From: Ruifeng Wang <ruifeng.wang@arm.com>
To: david.hunt@intel.com
Cc: dev@dpdk.org, hkalra@marvell.com, gavin.hu@arm.com,
	honnappa.nagarahalli@arm.com, nd@arm.com,
	Ruifeng Wang <ruifeng.wang@arm.com>,
	stable@dpdk.org
Subject: [dpdk-dev] [PATCH v3 2/2] test/distributor: fix false unit test failure
Date: Tue, 15 Oct 2019 17:28:26 +0800	[thread overview]
Message-ID: <20191015092826.13002-3-ruifeng.wang@arm.com> (raw)
In-Reply-To: <20191015092826.13002-1-ruifeng.wang@arm.com>

Sanity test could spuriously fail with reporting flush count error.
It was caused by worker stat coherent issue between distributor and
worker thread.
Fix this issue by using atomic operations to update worker stat.

Fixes: c3eabff124e6 ("distributor: add unit tests")
Cc: stable@dpdk.org

Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
---
 app/test/test_distributor.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/test/test_distributor.c b/app/test/test_distributor.c
index 7090b55f8..ba1f81cf8 100644
--- a/app/test/test_distributor.c
+++ b/app/test/test_distributor.c
@@ -70,12 +70,14 @@ handle_work(void *arg)
 		buf[i] = NULL;
 	num = rte_distributor_get_pkt(db, id, buf, buf, num);
 	while (!quit) {
-		worker_stats[id].handled_packets += num;
+		__atomic_fetch_add(&worker_stats[id].handled_packets, num,
+				__ATOMIC_RELAXED);
 		count += num;
 		num = rte_distributor_get_pkt(db, id,
 				buf, buf, num);
 	}
-	worker_stats[id].handled_packets += num;
+	__atomic_fetch_add(&worker_stats[id].handled_packets, num,
+			__ATOMIC_RELAXED);
 	count += num;
 	rte_distributor_return_pkt(db, id, buf, num);
 	return 0;
-- 
2.17.1


  parent reply	other threads:[~2019-10-15  9:29 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-08  9:55 [dpdk-dev] [PATCH] lib/distributor: fix deadlock issue for aarch64 Ruifeng Wang
2019-10-08 12:53 ` Hunt, David
2019-10-08 17:05 ` Aaron Conole
2019-10-08 19:46   ` [dpdk-dev] [dpdk-stable] " David Marchand
2019-10-08 20:08     ` Aaron Conole
2019-10-09  5:52     ` Ruifeng Wang (Arm Technology China)
2019-10-17 11:42       ` [dpdk-dev] [EXT] " Harman Kalra
2019-10-17 13:48         ` Ruifeng Wang (Arm Technology China)
2019-10-12  2:43 ` [dpdk-dev] [PATCH v2 0/2] fix distributor unit test Ruifeng Wang
2019-10-12  2:43   ` [dpdk-dev] [PATCH v2 1/2] lib/distributor: fix deadlock issue for aarch64 Ruifeng Wang
2019-10-13  2:31     ` Honnappa Nagarahalli
2019-10-14 10:00       ` Ruifeng Wang (Arm Technology China)
2019-10-12  2:43   ` [dpdk-dev] [PATCH v2 2/2] test/distributor: fix false unit test failure Ruifeng Wang
2019-10-15  9:28 ` [dpdk-dev] [PATCH v3 0/2] fix distributor unit test Ruifeng Wang
2019-10-15  9:28   ` [dpdk-dev] [PATCH v3 1/2] lib/distributor: fix deadlock issue for aarch64 Ruifeng Wang
2019-10-25  8:13     ` Hunt, David
2019-10-15  9:28   ` Ruifeng Wang [this message]
2019-10-25  8:13     ` [dpdk-dev] [PATCH v3 2/2] test/distributor: fix false unit test failure Hunt, David
2019-10-24 19:31   ` [dpdk-dev] [PATCH v3 0/2] fix distributor unit test David Marchand
2019-10-25  8:11     ` Hunt, David
2019-10-25  8:18       ` David Marchand
2019-10-25  8:20         ` Hunt, David
2019-10-25  8:33   ` David Marchand

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