Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp2209276pxb; Mon, 8 Mar 2021 18:03:30 -0800 (PST) X-Google-Smtp-Source: ABdhPJzGgsrKN5XhR7p377vNbNi6pZcejAYIQXFhC/stDLZkOBCFLKd3yI7qjBabDTaCfLmomRuH X-Received: by 2002:a05:6402:382:: with SMTP id o2mr1498510edv.238.1615255409795; Mon, 08 Mar 2021 18:03:29 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1615255409; cv=none; d=google.com; s=arc-20160816; b=tJ82V8wDOe1gooHz07znmRWw2MIRm9O3kXtwFyMEhTw8fxa1PHTkBMKqJitPimy4rZ 3zXeqJgKDszkT380xPl4y6egMjqdvUHTDWTTsSOJoyezLkwiUvyzkUJ7KMc24++fMZEM gsJxlgKdwppy5v3l/C4hNrFXQDUEG8YNlwxaIpuE0UVaPgq9OZytfik23mgrkaHPFOT4 FthluZhazaMA8P1pwKQOpsF6ZpS3DggESMsZCW404Ko8GKWiVe/DG+fM+/ikB1VwQ5Ne bv4G+vx7SWAfleQ+GFzyk3qPuAu4dr90WsnnK90HSG0ozHR4U5JTxmx77GMOn3/Q3iyG MzQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=DdNf+KFte/OF/IeSHTjwAoH9f3S232o3ep7utDtj7DQ=; b=GvFvsgM1GeTgtOL6HPnnrSS1BmvYG/uWvDMPm+qMtncEm6P1pkSz3pko2G9QC+1OAC pU5LdNHR+Q33eIlvT7b8IOjv0kmw6wZ2hhuB/CNdhBBtv8vd3DeV0LsD6qpA0r1xpxUr orDFPDQ2U6KzSobd0eOQRPB1gV5ky4cQvoxkAOi+T+sc9gIURDHrYU4IX+1AwAab7bJ0 je8/ow0qDQ5GyqucENKfzNxfqGWcaqG1k57OvGWFoSecm13A64vgS5xhqiZNxC4BJ2Nl z0MyfL52zeaa+zaSyEwg5l20UeCl9u5Vi3rw1u1Y3RSqC0fteFgiZ4EHLrWeFUvAgeVJ eVUw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id w1si8115169ejq.377.2021.03.08.18.03.07; Mon, 08 Mar 2021 18:03:29 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229611AbhCICAR (ORCPT + 99 others); Mon, 8 Mar 2021 21:00:17 -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