From patchwork Tue Apr 22 20:21:18 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 28831 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-oa0-f72.google.com (mail-oa0-f72.google.com [209.85.219.72]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id B6B4620341 for ; Tue, 22 Apr 2014 20:23:55 +0000 (UTC) Received: by mail-oa0-f72.google.com with SMTP id eb12sf37484903oac.3 for ; Tue, 22 Apr 2014 13:23:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:delivered-to:from:to:date:message-id:in-reply-to :references:subject:cc:precedence:list-id:list-unsubscribe :list-archive:list-post:list-help:list-subscribe:mime-version:sender :errors-to:x-original-sender:x-original-authentication-results :mailing-list:content-type:content-transfer-encoding; bh=gyVbpO/ecofJQqugNV/JVy5UKpTQfCnhD349Ssxz+BM=; b=Sdg1Y3Gq03Q5XvwXaI00dI+I/XCcFzmR9yu0S7gAnYntt0qbJIAGXLxxRWXMlXDxeo tZ9otAhshmjcCUbU2ci86B/ZrKys6xy5iwx6TRZ5RfQ9Fa7SXkOExbltLSQVQMmKtCzN d//qLnt0Y/FPFlrEWTRoP49+y5X/klWTK7zCG/0WWyRLMqpM+CjANH9jDHg0fFxfLNtK qIHL8UryMGG/AC3ipgxiX32OnDb96+2wuPDAQGs8zxZyD5NxbwZ8IEhMZDAcbkYUF1eW T/nw3onsoYsWau4jgWVj2IpkeHj4mhp4F1EqUiQ1lT4/KKVyY+2IhvXVizkg0ZHozIPW rLIA== X-Gm-Message-State: ALoCoQlas7xIqJtStveWvhvuHR75vQi6CmdF6I979uSs0FYvZFrOb1aUBjYXk+QQQ4pfnwLBUGn2 X-Received: by 10.43.88.73 with SMTP id az9mr19089146icc.5.1398198235273; Tue, 22 Apr 2014 13:23:55 -0700 (PDT) X-BeenThere: patchwork-forward@linaro.org Received: by 10.140.19.115 with SMTP id 106ls274205qgg.75.gmail; Tue, 22 Apr 2014 13:23:55 -0700 (PDT) X-Received: by 10.52.136.35 with SMTP id px3mr25402vdb.66.1398198235102; Tue, 22 Apr 2014 13:23:55 -0700 (PDT) Received: from mail-ve0-f173.google.com (mail-ve0-f173.google.com [209.85.128.173]) by mx.google.com with ESMTPS id h7si7082769vcv.192.2014.04.22.13.23.55 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 22 Apr 2014 13:23:55 -0700 (PDT) Received-SPF: neutral (google.com: 209.85.128.173 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) client-ip=209.85.128.173; Received: by mail-ve0-f173.google.com with SMTP id oy12so10125124veb.18 for ; Tue, 22 Apr 2014 13:23:55 -0700 (PDT) X-Received: by 10.58.230.103 with SMTP id sx7mr3123303vec.28.1398198234999; Tue, 22 Apr 2014 13:23:54 -0700 (PDT) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patch@linaro.org Received: by 10.220.221.72 with SMTP id ib8csp52573vcb; Tue, 22 Apr 2014 13:23:54 -0700 (PDT) X-Received: by 10.224.26.71 with SMTP id d7mr52061610qac.29.1398198234417; Tue, 22 Apr 2014 13:23:54 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id 100si17670525qgv.4.2014.04.22.13.23.54 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 22 Apr 2014 13:23:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WchCn-0003lJ-59; Tue, 22 Apr 2014 20:22:13 +0000 Received: from mezzanine.sirena.org.uk ([2400:8900::f03c:91ff:fedb:4f4]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WchCa-0003Vr-Cq for linux-arm-kernel@lists.infradead.org; Tue, 22 Apr 2014 20:22:00 +0000 Received: from cpc11-sgyl31-2-0-cust672.sgyl.cable.virginm.net ([94.175.94.161] helo=debutante.sirena.org.uk) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1WchC8-0005iW-9e; Tue, 22 Apr 2014 20:21:38 +0000 Received: from broonie by debutante.sirena.org.uk with local (Exim 4.82) (envelope-from ) id 1WchBx-0001xN-54; Tue, 22 Apr 2014 21:21:21 +0100 From: Mark Brown To: Lorenzo Pieralisi , Catalin Marinas , Will Deacon , Mark Rutland Date: Tue, 22 Apr 2014 21:21:18 +0100 Message-Id: <1398198078-7473-4-git-send-email-broonie@kernel.org> X-Mailer: git-send-email 1.9.2 In-Reply-To: <1398198078-7473-1-git-send-email-broonie@kernel.org> References: <1398198078-7473-1-git-send-email-broonie@kernel.org> X-SA-Exim-Connect-IP: 94.175.94.161 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mezzanine.sirena.org.uk X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 Subject: [PATCH 4/4] arm64: topology: Provide relative power numbers for cores X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140422_132200_528124_E3A28FE1 X-CRM114-Status: GOOD ( 15.07 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.3.2 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record Cc: linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, Mark Brown X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: , List-Help: , List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: broonie@kernel.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.128.173 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 From: Mark Brown Provide performance numbers to the scheduler to help it fill the cores in the system on big.LITTLE systems. With the current scheduler this may perform poorly for applications that try to do OpenMP style work over all cores but should help for more common workloads. The current 32 bit ARM implementation provides a similar estimate so this helps ensure that work to improve big.LITTLE systems on ARMv7 systems performs similarly on ARMv8 systems. The power numbers are the same as for ARMv7 since it seems that the expected differential between the big and little cores is very similar on both ARMv7 and ARMv8. In both ARMv7 and ARMv8 cases the numbers were based on the published DMIPS numbers. These numbers are just an initial and basic approximation for use with the current scheduler, it is likely that both experience with silicon and ongoing work on improving the scheduler will lead to further tuning or will tune automatically at runtime and so make the specific choice of numbers here less critical. Signed-off-by: Mark Brown --- arch/arm64/kernel/topology.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index a912f3a7c804..caf2a7cc7673 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -199,6 +199,8 @@ struct cpu_efficiency { * use the default SCHED_POWER_SCALE value for cpu_scale. */ static const struct cpu_efficiency table_efficiency[] = { + { "arm,cortex-a57", 3891 }, + { "arm,cortex-a53", 2048 }, { NULL, }, };