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 9C1E441EA5; Wed, 15 Mar 2023 22:16:43 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 52E0142D36; Wed, 15 Mar 2023 22:15:58 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id 59A0B410DD for ; Wed, 15 Mar 2023 22:15:48 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id 1EFB320C343B; Wed, 15 Mar 2023 14:15:46 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1EFB320C343B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1678914947; bh=NGeD/kktCtxHao+11pGy3/7JGaXKOT/dp1Jpsw1eEbI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zf7MLDcgAojBOtL1nSuIbF6KW7Xp92R6IbHnTyYVdq43PsYeEk83BJK21no0TOphe ltDsOtkkN8UEZnUbOZkWTNujHRVS7GdN69sCMooTFKNbhMnKsEq8yxnWiEtUvOrKQY vfsNcu2IVQ4MqRerB4RuAZPiM9Q/feN/5pHOlDHk= From: Tyler Retzlaff To: dev@dpdk.org Cc: Honnappa.Nagarahalli@arm.com, Ruifeng.Wang@arm.com, thomas@monjalon.net, Tyler Retzlaff Subject: [PATCH v2 08/16] net/iavf: use previous value atomic fetch operations Date: Wed, 15 Mar 2023 14:15:37 -0700 Message-Id: <1678914945-10638-9-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1678914945-10638-1-git-send-email-roretzla@linux.microsoft.com> References: <1678486530-20688-1-git-send-email-roretzla@linux.microsoft.com> <1678914945-10638-1-git-send-email-roretzla@linux.microsoft.com> 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 Use __atomic_fetch_{add,and,or,sub,xor} instead of __atomic_{add,and,or,sub,xor}_fetch adding the necessary code to allow consumption of the resulting value. Signed-off-by: Tyler Retzlaff --- drivers/net/iavf/iavf_vchnl.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/iavf/iavf_vchnl.c b/drivers/net/iavf/iavf_vchnl.c index 9adaadb..51d4fc7 100644 --- a/drivers/net/iavf/iavf_vchnl.c +++ b/drivers/net/iavf/iavf_vchnl.c @@ -120,7 +120,7 @@ struct iavf_event_handler { { struct iavf_event_handler *handler = &event_handler; - if (__atomic_add_fetch(&handler->ndev, 1, __ATOMIC_RELAXED) != 1) + if (__atomic_fetch_add(&handler->ndev, 1, __ATOMIC_RELAXED) + 1 != 1) return 0; #if defined(RTE_EXEC_ENV_IS_WINDOWS) && RTE_EXEC_ENV_IS_WINDOWS != 0 int err = _pipe(handler->fd, MAX_EVENT_PENDING, O_BINARY); @@ -149,7 +149,7 @@ struct iavf_event_handler { { struct iavf_event_handler *handler = &event_handler; - if (__atomic_sub_fetch(&handler->ndev, 1, __ATOMIC_RELAXED) != 0) + if (__atomic_fetch_sub(&handler->ndev, 1, __ATOMIC_RELAXED) - 1 != 0) return; int unused = pthread_cancel(handler->tid); @@ -533,8 +533,8 @@ struct iavf_event_handler { /* read message and it's expected one */ if (msg_opc == vf->pend_cmd) { uint32_t cmd_count = - __atomic_sub_fetch(&vf->pend_cmd_count, - 1, __ATOMIC_RELAXED); + __atomic_fetch_sub(&vf->pend_cmd_count, + 1, __ATOMIC_RELAXED) - 1; if (cmd_count == 0) _notify_cmd(vf, msg_ret); } else { -- 1.8.3.1