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 05760A0C43; Wed, 20 Oct 2021 10:46:30 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 4DDE7411C1; Wed, 20 Oct 2021 10:46:13 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mails.dpdk.org (Postfix) with ESMTP id 29E1D411D2 for ; Wed, 20 Oct 2021 10:46:12 +0200 (CEST) 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 A8D52ED1; Wed, 20 Oct 2021 01:46:11 -0700 (PDT) Received: from net-x86-dell-8268.shanghai.arm.com (net-x86-dell-8268.shanghai.arm.com [10.169.210.103]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 962593F70D; Wed, 20 Oct 2021 01:46:09 -0700 (PDT) From: Feifei Wang To: David Hunt Cc: konstantin.ananyev@intel.com, dev@dpdk.org, nd@arm.com, Feifei Wang , Ruifeng Wang Date: Wed, 20 Oct 2021 16:45:23 +0800 Message-Id: <20211020084523.1309177-6-feifei.wang2@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211020084523.1309177-1-feifei.wang2@arm.com> References: <20210926063302.1541193-1-feifei.wang2@arm.com> <20211020084523.1309177-1-feifei.wang2@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v4 5/5] lib/distributor: use wait event scheme 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 Sender: "dev" Instead of polling for bufptr64 to be updated, use wait event for this case. Signed-off-by: Feifei Wang Reviewed-by: Ruifeng Wang --- lib/distributor/rte_distributor_single.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/lib/distributor/rte_distributor_single.c b/lib/distributor/rte_distributor_single.c index f4725b1d0b..c623bb135d 100644 --- a/lib/distributor/rte_distributor_single.c +++ b/lib/distributor/rte_distributor_single.c @@ -33,9 +33,8 @@ rte_distributor_request_pkt_single(struct rte_distributor_single *d, union rte_distributor_buffer_single *buf = &d->bufs[worker_id]; int64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS) | RTE_DISTRIB_GET_BUF; - while (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED) - & RTE_DISTRIB_FLAGS_MASK)) - rte_pause(); + rte_wait_event(&buf->bufptr64, RTE_DISTRIB_FLAGS_MASK, + 0, !=, __ATOMIC_RELAXED, 64); /* Sync with distributor on GET_BUF flag. */ __atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE); @@ -74,9 +73,8 @@ rte_distributor_return_pkt_single(struct rte_distributor_single *d, union rte_distributor_buffer_single *buf = &d->bufs[worker_id]; uint64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS) | RTE_DISTRIB_RETURN_BUF; - while (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED) - & RTE_DISTRIB_FLAGS_MASK)) - rte_pause(); + rte_wait_event(&buf->bufptr64, RTE_DISTRIB_FLAGS_MASK, + 0, !=, __ATOMIC_RELAXED, 64); /* Sync with distributor on RETURN_BUF flag. */ __atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE); -- 2.25.1