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=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 5B626C433DF for ; Tue, 2 Jun 2020 00:54:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3442920734 for ; Tue, 2 Jun 2020 00:54:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727113AbgFBAyk (ORCPT ); Mon, 1 Jun 2020 20:54:40 -0400 Received: from out28-122.mail.aliyun.com ([115.124.28.122]:49447 "EHLO out28-122.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725793AbgFBAyk (ORCPT ); Mon, 1 Jun 2020 20:54:40 -0400 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 Cc: palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, maochenxi@eswin.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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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