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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10DB7C4332F for ; Tue, 12 Apr 2022 03:50:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345050AbiDLDwf (ORCPT ); Mon, 11 Apr 2022 23:52:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345029AbiDLDwc (ORCPT ); Mon, 11 Apr 2022 23:52:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFCD215A3E; Mon, 11 Apr 2022 20:50:16 -0700 (PDT) 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 dfw.source.kernel.org (Postfix) with ESMTPS id 4CA3061735; Tue, 12 Apr 2022 03:50:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E6B31C385A6; Tue, 12 Apr 2022 03:50:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649735415; bh=P9+O1kpUptYnKFD23NWAw1Xn9Hh0s8Rg+gBWuVO+Hew=; h=From:To:Cc:Subject:Date:From; b=dRKJ8Ovtpx0hFHCkElq0iMIL9BZ98ES/fbm4BQOSUJP+Ag9nH9qE1JChNSS9cQkRw IC2Fz5AXrSN6R5Kzlq7fB9yKqZwdMRGfxNZS/FzW87ig19Doc/z3rQLrcJl4r2QGqc RySZEYOZq/8CagzXX3CdP/nxKjp9BhJYNKE8MMm/Tz07ebnvNGG2EHgM7j4fY3M9yd YDH7fwe1r9r+ml4VoryrMUHa/ITMSWAGs0z/ZbdN1XYS+BvKXIX2XSI0jYCK4m3MsN I41hxKxwaPFhS5EH5dq7D6C1Hch0SJ4ZO6WEwsNAfQsDmlcY5RhNYMwC586Db4jXlc jOwjOyHOaMV6w== From: guoren@kernel.org To: guoren@kernel.org, arnd@arndb.de, palmer@dabbelt.com, mark.rutland@arm.com, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH V2 0/3] riscv: atomic: Optimize AMO instructions usage Date: Tue, 12 Apr 2022 11:49:54 +0800 Message-Id: <20220412034957.1481088-1-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren These patch series contain one cleanup and some optimizations for atomic operations. Changes in V2: - Fixup LR/SC memory barrier semantic problems which pointed by Rutland - Combine patches into one patchset series - Separate AMO optimization & LRSC optimization for convenience patch review Guo Ren (3): riscv: atomic: Cleanup unnecessary definition riscv: atomic: Optimize acquire and release for AMO operations riscv: atomic: Optimize memory barrier semantics of LRSC-pairs arch/riscv/include/asm/atomic.h | 70 ++++++++++++++++++++++++++++++-- arch/riscv/include/asm/cmpxchg.h | 42 +++++-------------- 2 files changed, 76 insertions(+), 36 deletions(-) -- 2.25.1