From patchwork Sun Mar 28 06:30:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12168855 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=-17.2 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,URIBL_BLOCKED,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 12737C433C1 for ; Sun, 28 Mar 2021 06:31:52 +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 A7F766197C for ; Sun, 28 Mar 2021 06:31:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A7F766197C 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=uzHdHtrdnrPe/JC6aW1467O/wuwfU+d7y7APsnoOPoA=; b=NTV23H5CT9r0hCXNC64ZoI8+Mx m3z9CFcZf4sKl4nLGJjqr0iLrRoWbyQtHkOcGxRFu9837eqtLpcsohiH7+PzkxixAAVdri3EMj2A7 8XfwGVIeqNglk/xXMpcKeIuQ5xxaY7uvBalgyMSWPhQjhW3dMO/OXOz1GBJ3HivXaTSUV6D7DUoa6 Xq3zSWMsRdy1s63Qq0h8XoXnUykMLmqaTFWj/Y1VwSk4+3feCJF4E9WoEdOa9bzl7UOw1uI9+I+f5 wbrP4zBY+PZ1e7ZHoOmr10zELbSzNoGY42r9p79Cciizukly/qjAuMFPt+BnSU+lODaudH/m3DWhM HucPLnUg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lQOxZ-005uxT-9C; Sun, 28 Mar 2021 06:31:41 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lQOxV-005uvs-D5 for linux-riscv@lists.infradead.org; Sun, 28 Mar 2021 06:31:39 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id C9D806197C; Sun, 28 Mar 2021 06:31:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616913096; bh=Bg9d2w1WAX5KFLAnbnlQNHWx+c16ctVJTJF6+EgKbfQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Wf0uvxCQIWoezH2Q//Fy+0JLf/n/JQM1fgGTIy+LNlK2ke3/GfMHR3INbhImyBKub PYoWfqkNgd/16507YS2V+9oXcBGnlB31xMCYPq4i/42w/2S/VMWUBfiWhHpcJilL8F 3Ug35ynRWtusIYmXztSQi1aR21Tlyp2sgtUPmJYRmC8gtc/K5PXnkUmkkt1jKh3C9F TyjzDm/lKbQBpjG+hHUIJbOwh7gFQOtovJe5DUrQIogSJfInGNEiZgiDba+jknWCpx 2kwyOHYg5WsCDiNR70IA5XNcpFv4vfIXOBFYCliK9/b+BMC46SrVQb0cTyEhy0/v1K h7HNGGnm6y0Eg== 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 , Jonas Bonn , Stefan Kristiansson , Stafford Horne Subject: [PATCH v5 5/7] openrisc: qspinlock: Add ARCH_USE_QUEUED_SPINLOCKS_XCHG32 Date: Sun, 28 Mar 2021 06:30:26 +0000 Message-Id: <1616913028-83376-6-git-send-email-guoren@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1616913028-83376-1-git-send-email-guoren@kernel.org> References: <1616913028-83376-1-git-send-email-guoren@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210328_073138_023055_ECA21BF5 X-CRM114-Status: UNSURE ( 7.28 ) 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 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: Jonas Bonn Cc: Stefan Kristiansson Cc: Stafford Horne Cc: openrisc@lists.librecores.org --- arch/openrisc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 591acc5990dc..b299e409429f 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -33,6 +33,7 @@ config OPENRISC select OR1K_PIC select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1 select ARCH_USE_QUEUED_SPINLOCKS + select ARCH_USE_QUEUED_SPINLOCKS_XCHG32 select ARCH_USE_QUEUED_RWLOCKS select OMPIC if SMP select ARCH_WANT_FRAME_POINTERS