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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 1246EC43381 for ; Wed, 13 Feb 2019 22:01:03 +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 CA1FF222A4 for ; Wed, 13 Feb 2019 22:01:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Ye/Prajf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA1FF222A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=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: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=ntVFRKDnJtPxIUR+pnHNQ1Y51/bmVJQ6ysmybZtbA0Q=; b=Ye/ Prajf6pwsQ9O8YB/FiRi5068SD3ztO9f9mymwVLpxxWX6SNHjfkUXlElUFifXzcbuDPPLF+imYyoh PRVRxWUHLlPJXiroNm4C0CrGGEoPs5a1FFgDG0TOWBN8/mEbtlWr4uX3FMNjXwghf28+OUTRxZl6u pxCA/VR4crSfvJAjuKFjoXCXcbUyLfR1wK1ji+GiaZa52jFjUmypFR94lhPg1gjp1jCafJ5M/j5Ud droyTpJV8E1RrEpr2KL+EVcSzrdH1I7OqqBM9Sg0dwv8KGLkaQfBAHvDr+dnASlLW6qBrJ83Fbm5K yceVb9tGkWMUX2hrNhjpALp0SPxulDQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gu2aP-0005sr-QQ; Wed, 13 Feb 2019 22:00:57 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gu2aM-0005sL-Ey; Wed, 13 Feb 2019 22:00:56 +0000 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B0E6689AE0; Wed, 13 Feb 2019 22:00:52 +0000 (UTC) Received: from llong.com (ovpn-125-158.rdu2.redhat.com [10.10.125.158]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1035C600C0; Wed, 13 Feb 2019 22:00:44 +0000 (UTC) From: Waiman Long To: Peter Zijlstra , Ingo Molnar , Will Deacon , Thomas Gleixner Subject: [PATCH v4 0/3] locking/rwsem: Rwsem rearchitecture part 0 Date: Wed, 13 Feb 2019 17:00:14 -0500 Message-Id: <1550095217-12047-1-git-send-email-longman@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 13 Feb 2019 22:00:53 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190213_140054_542138_5F663DB5 X-CRM114-Status: GOOD ( 12.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, linux-mips@vger.kernel.org, "H. Peter Anvin" , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Davidlohr Bueso , linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, x86@kernel.org, Waiman Long , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, Arnd Bergmann , linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, openrisc@lists.librecores.org, Borislav Petkov , linux-arm-kernel@lists.infradead.org, Tim Chen , linux-parisc@vger.kernel.org, Linus Torvalds , linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, nios2-dev@lists.rocketboards.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org v4: - Remove rwsem-spinlock.c and make all archs use rwsem-xadd.c. v3: - Optimize __down_read_trylock() for the uncontended case as suggested by Linus. v2: - Add patch 2 to optimize __down_read_trylock() as suggested by PeterZ. - Update performance test data in patch 1. The goal of this patchset is to remove the architecture specific files for rwsem-xadd to make it easer to add enhancements in the later rwsem patches. It also removes the legacy rwsem-spinlock.c file and make all the architectures use one single implementation of rwsem - rwsem-xadd.c. Waiman Long (3): locking/rwsem: Remove arch specific rwsem files locking/rwsem: Remove rwsem-spinlock.c & use rwsem-xadd.c for all archs locking/rwsem: Optimize down_read_trylock() MAINTAINERS | 1 - arch/alpha/Kconfig | 7 - arch/alpha/include/asm/rwsem.h | 211 ------------------------- arch/arc/Kconfig | 3 - arch/arm/Kconfig | 4 - arch/arm/include/asm/Kbuild | 1 - arch/arm64/Kconfig | 3 - arch/arm64/include/asm/Kbuild | 1 - arch/c6x/Kconfig | 3 - arch/csky/Kconfig | 3 - arch/h8300/Kconfig | 3 - arch/hexagon/Kconfig | 6 - arch/hexagon/include/asm/Kbuild | 1 - arch/ia64/Kconfig | 4 - arch/ia64/include/asm/rwsem.h | 172 -------------------- arch/m68k/Kconfig | 7 - arch/microblaze/Kconfig | 6 - arch/mips/Kconfig | 7 - arch/nds32/Kconfig | 3 - arch/nios2/Kconfig | 3 - arch/openrisc/Kconfig | 6 - arch/parisc/Kconfig | 6 - arch/powerpc/Kconfig | 7 - arch/powerpc/include/asm/Kbuild | 1 - arch/riscv/Kconfig | 3 - arch/s390/Kconfig | 6 - arch/s390/include/asm/Kbuild | 1 - arch/sh/Kconfig | 6 - arch/sh/include/asm/Kbuild | 1 - arch/sparc/Kconfig | 8 - arch/sparc/include/asm/Kbuild | 1 - arch/unicore32/Kconfig | 6 - arch/x86/Kconfig | 3 - arch/x86/include/asm/rwsem.h | 237 ---------------------------- arch/x86/lib/Makefile | 1 - arch/x86/lib/rwsem.S | 156 ------------------ arch/x86/um/Kconfig | 6 - arch/x86/um/Makefile | 1 - arch/xtensa/Kconfig | 3 - arch/xtensa/include/asm/Kbuild | 1 - include/asm-generic/rwsem.h | 140 ----------------- include/linux/rwsem-spinlock.h | 47 ------ include/linux/rwsem.h | 9 +- kernel/Kconfig.locks | 2 +- kernel/locking/Makefile | 4 +- kernel/locking/percpu-rwsem.c | 2 + kernel/locking/rwsem-spinlock.c | 339 ---------------------------------------- kernel/locking/rwsem.h | 130 +++++++++++++++ 48 files changed, 135 insertions(+), 1447 deletions(-) delete mode 100644 arch/alpha/include/asm/rwsem.h delete mode 100644 arch/ia64/include/asm/rwsem.h delete mode 100644 arch/x86/include/asm/rwsem.h delete mode 100644 arch/x86/lib/rwsem.S delete mode 100644 include/asm-generic/rwsem.h delete mode 100644 include/linux/rwsem-spinlock.h delete mode 100644 kernel/locking/rwsem-spinlock.c -- 1.8.3.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel