From patchwork Wed Feb 13 20:32:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Waiman Long X-Patchwork-Id: 10810853 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3C520746 for ; Wed, 13 Feb 2019 20:32:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2B5C22E54E for ; Wed, 13 Feb 2019 20:32:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1F1822E4E6; Wed, 13 Feb 2019 20:32:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4C222E50D for ; Wed, 13 Feb 2019 20:32:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732397AbfBMUc0 (ORCPT ); Wed, 13 Feb 2019 15:32:26 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51376 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728538AbfBMUc0 (ORCPT ); Wed, 13 Feb 2019 15:32:26 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 92AA52D7ED; Wed, 13 Feb 2019 20:32:24 +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 1BDDF10021B6; Wed, 13 Feb 2019 20:32:19 +0000 (UTC) From: Waiman Long To: Peter Zijlstra , Ingo Molnar , Will Deacon , Thomas Gleixner Cc: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org, x86@kernel.org, Arnd Bergmann , Borislav Petkov , "H. Peter Anvin" , Davidlohr Bueso , Linus Torvalds , Andrew Morton , Tim Chen , Waiman Long Subject: [PATCH v3 0/2] locking/rwsem: Remove arch specific rwsem files Date: Wed, 13 Feb 2019 15:32:10 -0500 Message-Id: <1550089932-6888-1-git-send-email-longman@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 13 Feb 2019 20:32:25 +0000 (UTC) Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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. This is part 0 of my rwsem patchset. It just removes the architecture specific files to make it easer to add enhancements in the upcoming rwsem patches. Since the two ll/sc platforms that I can tested on (arm64 & ppc) are both using the generic C codes, the rwsem performance shouldn't be affected by this patch except the down_read_trylock() code which was included in patch 2 for arm64. Waiman Long (2): locking/rwsem: Remove arch specific rwsem files locking/rwsem: Optimize down_read_trylock() MAINTAINERS | 1 - arch/alpha/include/asm/rwsem.h | 211 ----------------------------------- arch/arm/include/asm/Kbuild | 1 - arch/arm64/include/asm/Kbuild | 1 - arch/hexagon/include/asm/Kbuild | 1 - arch/ia64/include/asm/rwsem.h | 172 ----------------------------- arch/powerpc/include/asm/Kbuild | 1 - arch/s390/include/asm/Kbuild | 1 - arch/sh/include/asm/Kbuild | 1 - arch/sparc/include/asm/Kbuild | 1 - arch/x86/include/asm/rwsem.h | 237 ---------------------------------------- arch/x86/lib/Makefile | 1 - arch/x86/lib/rwsem.S | 156 -------------------------- arch/xtensa/include/asm/Kbuild | 1 - include/asm-generic/rwsem.h | 140 ------------------------ include/linux/rwsem.h | 4 +- kernel/locking/percpu-rwsem.c | 2 + kernel/locking/rwsem.h | 133 ++++++++++++++++++++++ 18 files changed, 136 insertions(+), 929 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