From patchwork Mon Aug 8 07:13:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12938521 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F27F8C00140 for ; Mon, 8 Aug 2022 07:14:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=etL/UlHUFKoLTj1Pm+dsiSG9/+bXf4SRtnJpWUOuCXg=; b=k40vG5Dz9HugII eX38b1SW+LgdJkGAnTjcbKMQzCI+yfaSL4Pt0fXZdEHB7rR6P645JbTXLUG9o0RC0HW02fc58OJwb XiViVXW0iGC7ACG3V1oyF6NXZQFJu9KMjui/wtVeB+1sF+GBH60Y0EfQyUF1RsXOwyxJrI6DBeQoZ 5DmmnQ3y5mdXbqcGzblrGMv4B8+l9IQZKb+6ZwONbaC2SlSqb9ORPsdOxgqugUkOZWEv88bl5luKL YAaJ/z1eZxjXRZAQlNIMzqnl7QOnqNApImsl8KhkX6ryrcIx7+z2LOynNed8OpaJE2OGPlHJl8HVc kbcE0WfQdMqApmNYtwrg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oKwyE-00C2KC-0f; Mon, 08 Aug 2022 07:14:38 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oKwy8-00C2Ck-Gy for linux-riscv@lists.infradead.org; Mon, 08 Aug 2022 07:14:35 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 32879B80E06; Mon, 8 Aug 2022 07:14:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94282C43142; Mon, 8 Aug 2022 07:14:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659942869; bh=Z7mQrOMBfQftmFccyZvRl/mCYOYttb58VnNpEpOX/Ik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UZXK0Xr6vkJIo3dV464xjp0HwZcmi1PThbmH7PHFH6q7X3tYqIu1myEg27d8pBHPi +PHFnEhtgjnmwoJuotlDAKd/yY4WCeFompZXG3d9K+JHTDvzmqidhGOWIvLs0cevsC ha2iH0lYAnOUvh/Nbyv4gdaRcmsOpJhmhgh3LHsV9WU3bKW06dLgfJBIqSONaw5vok VJJOWpMqL3puK3rgUSQ/tR5GmaKJZC76oFyK8r+PvNVbUCWpNhcIPIRcclDlwprnlt I3+gG85Dk5T+UffsNkrBPeadjwfQaX0DD1P2GMdbXT+ejYfRGpj7G+O/BYifz5zrH2 1bAPaRxxN1/jA== From: guoren@kernel.org To: palmer@rivosinc.com, heiko@sntech.de, hch@infradead.org, arnd@arndb.de, peterz@infradead.org, will@kernel.org, boqun.feng@gmail.com, longman@redhat.com, shorne@gmail.com, conor.dooley@microchip.com Cc: linux-csky@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren , Guo Ren Subject: [PATCH V9 09/15] riscv: cmpxchg: Optimize cmpxchg64 Date: Mon, 8 Aug 2022 03:13:12 -0400 Message-Id: <20220808071318.3335746-10-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220808071318.3335746-1-guoren@kernel.org> References: <20220808071318.3335746-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220808_001432_807268_BC3F4D94 X-CRM114-Status: UNSURE ( 7.36 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Optimize cmpxchg64 with relaxed, acquire, release implementation. Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/riscv/include/asm/cmpxchg.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 14c9280c7f7f..4b5fa25f4336 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -226,6 +226,24 @@ (__cmpxchg_relaxed((ptr), (o), (n), sizeof(*(ptr)))) #ifdef CONFIG_64BIT +#define arch_cmpxchg64_relaxed(ptr, o, n) \ +({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + arch_cmpxchg_relaxed((ptr), (o), (n)); \ +}) + +#define arch_cmpxchg64_acquire(ptr, o, n) \ +({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + arch_cmpxchg_acquire((ptr), (o), (n)); \ +}) + +#define arch_cmpxchg64_release(ptr, o, n) \ +({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + arch_cmpxchg_release((ptr), (o), (n)); \ +}) + #define arch_cmpxchg64(ptr, o, n) \ ({ \ BUILD_BUG_ON(sizeof(*(ptr)) != 8); \