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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 53F0BC433DB for ; Tue, 9 Mar 2021 02:00:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2737E65279 for ; Tue, 9 Mar 2021 02:00:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229475AbhCICAS (ORCPT ); Mon, 8 Mar 2021 21:00:18 -0500 Received: from mx2.suse.de ([195.135.220.15]:41360 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230139AbhCICAD (ORCPT ); Mon, 8 Mar 2021 21:00:03 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D60ADAB8C; Tue, 9 Mar 2021 01:59:59 +0000 (UTC) From: Davidlohr Bueso To: npiggin@gmail.com Cc: peterz@infradead.org, mingo@redhat.com, will@kernel.org, longman@redhat.com, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dave@stgolabs.net Subject: [PATCH 0/3] powerpc/qspinlock: Some tuning updates Date: Mon, 8 Mar 2021 17:59:47 -0800 Message-Id: <20210309015950.27688-1-dave@stgolabs.net> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, A few updates while going through the powerpc port of the qspinlock. Patches 1 and 2 are straightforward, while patch 3 can be considered more of an rfc as I've only tested on a single machine, and there could be an alternative way if it doesn't end up being nearly a universal performance win. Thanks! Davidlohr Bueso (3): powerpc/spinlock: Define smp_mb__after_spinlock only once powerpc/spinlock: Unserialize spin_is_locked powerpc/qspinlock: Use generic smp_cond_load_relaxed arch/powerpc/include/asm/barrier.h | 16 ---------------- arch/powerpc/include/asm/qspinlock.h | 14 -------------- arch/powerpc/include/asm/simple_spinlock.h | 6 +----- arch/powerpc/include/asm/spinlock.h | 3 +++ 4 files changed, 4 insertions(+), 35 deletions(-) -- 2.26.2