From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A61CEA0C43; Tue, 16 Nov 2021 10:42:53 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 971514117A; Tue, 16 Nov 2021 10:42:52 +0100 (CET) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mails.dpdk.org (Postfix) with ESMTP id F15C941157 for ; Tue, 16 Nov 2021 10:42:51 +0100 (CET) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 749471FB; Tue, 16 Nov 2021 01:42:51 -0800 (PST) Received: from net-arm-n1amp-02.shanghai.arm.com (net-arm-n1amp-02.shanghai.arm.com [10.169.210.110]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A09123F5A1; Tue, 16 Nov 2021 01:42:49 -0800 (PST) From: Joyce Kong To: Cc: dev@dpdk.org, honnappa.nagarahalli@arm.com, nd@arm.com, Joyce Kong , Ruifeng Wang Subject: [PATCH v2 01/12] test/pmd_perf: use compiler atomic builtins for polling sync Date: Tue, 16 Nov 2021 09:41:54 +0000 Message-Id: <20211116094205.750359-2-joyce.kong@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211116094205.750359-1-joyce.kong@arm.com> References: <20211116094205.750359-1-joyce.kong@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Convert rte_atomic usages to compiler atomic built-ins for polling sync in pmd_perf test cases. Signed-off-by: Joyce Kong Reviewed-by: Ruifeng Wang --- app/test/test_pmd_perf.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c index 1df86ce080..546384a50d 100644 --- a/app/test/test_pmd_perf.c +++ b/app/test/test_pmd_perf.c @@ -10,7 +10,6 @@ #include #include #include -#include #include #include "packet_burst_generator.h" #include "test.h" @@ -525,7 +524,7 @@ main_loop(__rte_unused void *args) return 0; } -static rte_atomic64_t start; +static uint64_t start; static inline int poll_burst(void *args) @@ -563,8 +562,7 @@ poll_burst(void *args) num[portid] = pkt_per_port; } - while (!rte_atomic64_read(&start)) - ; + rte_wait_until_equal_64(&start, 1, __ATOMIC_ACQUIRE); cur_tsc = rte_rdtsc(); while (total) { @@ -616,15 +614,15 @@ exec_burst(uint32_t flags, int lcore) pkt_per_port = MAX_TRAFFIC_BURST; num = pkt_per_port * conf->nb_ports; - rte_atomic64_init(&start); - /* start polling thread, but not actually poll yet */ rte_eal_remote_launch(poll_burst, (void *)&pkt_per_port, lcore); /* Only when polling first */ if (flags == SC_BURST_POLL_FIRST) - rte_atomic64_set(&start, 1); + __atomic_store_n(&start, 1, __ATOMIC_RELAXED); + else + __atomic_store_n(&start, 0, __ATOMIC_RELAXED); /* start xmit */ i = 0; @@ -641,7 +639,7 @@ exec_burst(uint32_t flags, int lcore) /* only when polling second */ if (flags == SC_BURST_XMIT_FIRST) - rte_atomic64_set(&start, 1); + __atomic_store_n(&start, 1, __ATOMIC_RELEASE); /* wait for polling finished */ diff_tsc = rte_eal_wait_lcore(lcore); -- 2.25.1