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 AC08541EA5; Wed, 15 Mar 2023 22:17:26 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 10BB742D63; Wed, 15 Mar 2023 22:16:07 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id BE13940A7A for ; Wed, 15 Mar 2023 22:15:48 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id 8311920C7DF8; Wed, 15 Mar 2023 14:15:47 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 8311920C7DF8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1678914947; bh=D2OhwtWXrWhki0EXrqAyNa2IoqlxwsgoXFSVqla3t7w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O/QgCWDfpjgjbmc+ThsN+LNEEKX3JPR+bUpQHUlF+tgbO76RR504fwuzr++pB3TnH NwO1IBcmE06MCP8J6r/NZd4zS9tbqNId8IcPZQjHzv0aKdOij63645UfKAnl03eHe5 DpQEc+h/YtszmjATq/mYx2foeU6zrR1QQRXadVAg= From: Tyler Retzlaff To: dev@dpdk.org Cc: Honnappa.Nagarahalli@arm.com, Ruifeng.Wang@arm.com, thomas@monjalon.net, Tyler Retzlaff Subject: [PATCH v2 16/16] rcu: use previous value atomic fetch operations Date: Wed, 15 Mar 2023 14:15:45 -0700 Message-Id: <1678914945-10638-17-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 --- lib/rcu/rte_rcu_qsbr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/rcu/rte_rcu_qsbr.h b/lib/rcu/rte_rcu_qsbr.h index ccae5d5..1aa078e 100644 --- a/lib/rcu/rte_rcu_qsbr.h +++ b/lib/rcu/rte_rcu_qsbr.h @@ -462,7 +462,7 @@ struct rte_rcu_qsbr_dq_parameters { * structure are visible to the workers before the token * update is visible. */ - t = __atomic_add_fetch(&v->token, 1, __ATOMIC_RELEASE); + t = __atomic_fetch_add(&v->token, 1, __ATOMIC_RELEASE) + 1; return t; } -- 1.8.3.1