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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 7C5DAC43461 for ; Wed, 31 Mar 2021 14:33:05 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 27A4E600EF for ; Wed, 31 Mar 2021 14:33:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 27A4E600EF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id: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=qLsCoe/9fRlmvClDIStokFIglyyQzcJ/Gr3WpRV0UoI=; b=GpeS2FvJNFhlNyPKabOL5KVNbF WAMhBu0XfnmQETeq9wFSt6qFgP0tSgF/J3slJxKe+8h89lwRELxWP375wiid4+nvWeNL5GktjMrx1 mqHXt4z6SUxx5QrzyQFdpVMXqSbR6Fm7ul2hwaIOAs7cJtRwdHc7cHE9VsN5cp2ic0IyiTdkD+uC/ XUmXfgc67QU0DigAdHLmvlESHBqbolfcMd0T2PXxlKemzXl+kWn5pfrSGdDKslQGtdRht3BRuKEpf yKlJLp7ZNmbmULOPXNWkz/C+R28UxPsIGNYiBtMEgFZcqSiDAGw7Aqo9BR42dLoubGDLv53q3BuHM PmvlgMJg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRbts-006ocV-DX; Wed, 31 Mar 2021 14:32:52 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRbtp-006oaU-H5 for linux-riscv@lists.infradead.org; Wed, 31 Mar 2021 14:32:51 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6931060FF3; Wed, 31 Mar 2021 14:32:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617201168; bh=sUpQ42V7/BeYJXo8xKilrJhdJzUrsLncMVt8E/NbmTI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GCVYBSdWsYiqvYH5oYGVId4/MzMe7NvqmPl9pDexAmFGD5cqNZXH9o4HF+vhiGkPO 8FwMZKnRdTNt/mGm5FdZTRJq1SejRG6Dxn8BSX9Q9sF8/FJERgS/Joq1pLuXw/+SpX fYWvWFagOvEbTBlo/Pm13nwT+dH76caJG6x5oxHY56TU/7XMud7W4lSCBA+Ztvbs94 c0JgeKblXHOXlNsS4FEsCYE4cla47L5ne5HZ+MMUdf+o+9w1vaKOmt595yXPl7W+Hh KH/sOLUZchvSdfTn72MXz6kpPr/LWwx757q1Byt0vVOGqX8v9929SUwkrE66Ui0awe zbLNNqBSjJGpA== From: guoren@kernel.org To: guoren@kernel.org Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, sparclinux@vger.kernel.org, Guo Ren , Arnd Bergmann , Chris Zankel , Max Filippov Subject: [PATCH v6 8/9] xtensa: qspinlock: Add ARCH_USE_QUEUED_SPINLOCKS_XCHG32 Date: Wed, 31 Mar 2021 14:30:39 +0000 Message-Id: <1617201040-83905-9-git-send-email-guoren@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1617201040-83905-1-git-send-email-guoren@kernel.org> References: <1617201040-83905-1-git-send-email-guoren@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210331_153249_801645_EFA6D8C4 X-CRM114-Status: UNSURE ( 7.53 ) 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: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren We don't have native hw xchg16 instruction, so let qspinlock generic code to deal with it. Using the full-word atomic xchg instructions implement xchg16 has the semantic risk for atomic operations. This patch cancels the dependency of on qspinlock generic code on architecture's xchg16. Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Chris Zankel Cc: Max Filippov --- arch/xtensa/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 9ad6b7b82707..f19d780638f7 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -9,6 +9,7 @@ config XTENSA select ARCH_HAS_DMA_SET_UNCACHED if MMU select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS + select ARCH_USE_QUEUED_SPINLOCKS_XCHG32 select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_TABLE_SORT -- 2.17.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv