From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09413C433E0 for ; Tue, 2 Jun 2020 00:54:50 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D13B520734 for ; Tue, 2 Jun 2020 00:54:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FAq8RkWy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D13B520734 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eswin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=k/AiPE+S5wFgcMTOQ2KkE1RuinEAHUoU1mDdPOJHfKs=; b=FAq8RkWyLJ3pjV T2NFsOTxfRRAa1wT2Vak1Tu8Btp31NUB2qpIxUfqYnf5s/dQnaxOy2gfqTfwDaiwg/aEut0lGJQ6t cBvfbR+ITweNVNe1YK2p+kUNCytZnVX3JA0UA4QJ6cq0WoyA0Rib464dFyXGLr00KUDaeONrRPFtJ PsHuPjxCrDlUyKOgMUUvLc0ncZ3b4evwpOmZHrTA0YBkzXQtyhc9ywPiqmFeTm5ojwXjy6Z/f8qcc iJJbUvFwDx/yQqeaa0HDNpzT4N+28bVdJMGgmLouSyhp8CMnUaCvSJ05HO2IZKivomErDkpjkjw7d OPrBtHpNMvzQM9fTgYDw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jfvCa-00080I-Dm; Tue, 02 Jun 2020 00:54:48 +0000 Received: from out28-100.mail.aliyun.com ([115.124.28.100]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jfvCW-0007yb-UX for linux-riscv@lists.infradead.org; Tue, 02 Jun 2020 00:54:47 +0000 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.4580702|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_system_inform|0.0143612-0.00041111-0.985228; FP=12664043516937949436|1|1|1|0|-1|-1|-1; HT=e02c03302; MF=maochenxi@eswin.com; NM=1; PH=DS; RN=6; RT=6; SR=0; TI=SMTPD_---.HguMbpK_1591059270; Received: from localhost.localdomain(mailfrom:maochenxi@eswin.com fp:SMTPD_---.HguMbpK_1591059270) by smtp.aliyun-inc.com(10.194.97.246); Tue, 02 Jun 2020 08:54:36 +0800 From: Chenxi Mao To: paul.walmsley@sifive.com Subject: [PATCH 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default Date: Tue, 2 Jun 2020 08:54:28 +0800 Message-Id: <20200602005428.18087-1-maochenxi@eswin.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200601_175445_163039_B5F2B4B0 X-CRM114-Status: UNSURE ( 4.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: maochenxi@eswin.com, linux-riscv@lists.infradead.org, aou@eecs.berkeley.edu, palmer@dabbelt.com, linux-kernel@vger.kernel.org Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org Enable ARCH_SUPPORTS_ATOMIC_RMW by default to support osq_lock in mutex/rwsem locks. --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index a31e1a41913a..cbdc605d20d9 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -68,6 +68,7 @@ config RISCV select ARCH_HAS_GCOV_PROFILE_ALL select HAVE_COPY_THREAD_TLS select HAVE_ARCH_KASAN if MMU && 64BIT + select ARCH_SUPPORTS_ATOMIC_RMW config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT -- 2.25.1