From patchwork Tue May 21 17:21:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 164741 Delivered-To: patch@linaro.org Received: by 2002:a92:9e1a:0:0:0:0:0 with SMTP id q26csp1876293ili; Tue, 21 May 2019 10:21:55 -0700 (PDT) X-Google-Smtp-Source: APXvYqzwOYWQerQEU/QZSVR3nXCPEMnbxV1JsRyaC2U+CDz9Jxm1eLmsJ7lP+K73/hKvNOZEWyqC X-Received: by 2002:a63:1706:: with SMTP id x6mr83432997pgl.280.1558459315066; Tue, 21 May 2019 10:21:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558459315; cv=none; d=google.com; s=arc-20160816; b=FZJjdFfFQGsPhbFhvljJSBXo+XLkG7r3n+sQVk43GRmzNt0kmIUQLpnQtBgnYQgMQj mC4VZ+GYWgaCgQY5Z1vnBN3cVNwUabYS02W3nCnwbQTpZ3QwWn+C5H79ziaR2/gokBrO 0/5Xa9OsuNITYDrR4jD/wi6bHuH+9p7AjymhMl5pwqJPonxx8AZJCeI9UawM/utfCggH hK3KMq/RcPO7aXxI09sCrNNuONyIjYKSfggOnl1686/wR/mdhIiPSIh00ylR1+l09N1P bRvt4HYJpVva3aLhiOJJrgh5+tGlkg3PqgQO6mXQQpRa1SflPtF4Y+vB3i59ytSDoGpD X9XA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from; bh=AhbNneqWpZhsQtvNIvrsFAkIJXbSIqjJ1ptCo/otLeo=; b=afY62fvZfz8sl/nHUhWubDFTcxYeVho/L1WriIZvbiuMXe2BxO4OFvElGuqv16upmH uhsLrn0A1ibSgmC5hr/ieF+iVUSUIyCy9M0mGz+swqS0xprZb9VTELIepMqLnqA48OJu aoqD56PFEZo1fn90THppN/Iw0vZyEjqHXHtfQ5EOeMOX2cTtkgk09YbNnrB+DjqK3/H2 oBYOHxuHtK+RFejTADZg/kMxQTfOvdemauH/Ftetuqk8n/eFWvbLLguxzqLp4hRVbtUC /gpHvl9drkMARw64LaaqXifbvxw8L9+hBFlcdz3lSzAQFpH7AgL5+jBkP1lhZyzE5Fk6 lOvQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k83si23388734pfb.101.2019.05.21.10.21.54; Tue, 21 May 2019 10:21:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729030AbfEURVx (ORCPT + 30 others); Tue, 21 May 2019 13:21:53 -0400 Received: from foss.arm.com ([217.140.101.70]:39086 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728114AbfEURVx (ORCPT ); Tue, 21 May 2019 13:21:53 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B619F15A2; Tue, 21 May 2019 10:21:52 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7E4BC3F718; Tue, 21 May 2019 10:21:50 -0700 (PDT) From: Julien Grall To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Cc: catalin.marinas@arm.com, will.deacon@arm.com, christoffer.dall@arm.com, marc.zyngier@arm.com, james.morse@arm.com, julien.thierry@arm.com, suzuki.poulose@arm.com, Dave.Martin@arm.com, ard.biesheuvel@linaro.org, Julien Grall Subject: [PATCH v5 0/3] arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state Date: Tue, 21 May 2019 18:21:36 +0100 Message-Id: <20190521172139.21277-1-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This patch series keeps softirqs enabled while touching FPSIMD/SVE state. For more details on the impact see patch #3. This patch series has been benchmarked on Linux 5.1-rc4 with defconfig. On Juno2: * hackbench 100 process 1000 (10 times) * .7% quicker On ThunderX 2: * hackbench 1000 process 1000 (20 times) * 3.4% quicker Note that while the benchmark has been done on 5.1-rc4, the patch series is based on 5.2-rc1. Cheers, Julien Grall (3): arm64/fpsimd: Remove the prototype for sve_flush_cpu_state() arch/arm64: fpsimd: Introduce fpsimd_save_and_flush_cpu_state() and use it arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state arch/arm64/include/asm/fpsimd.h | 5 +- arch/arm64/include/asm/simd.h | 10 +-- arch/arm64/kernel/fpsimd.c | 139 +++++++++++++++++++++++++++------------- arch/arm64/kvm/fpsimd.c | 4 +- 4 files changed, 103 insertions(+), 55 deletions(-) -- 2.11.0