From patchwork Thu Sep 24 12:39:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ionela Voinescu X-Patchwork-Id: 11797207 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C837E59D for ; Thu, 24 Sep 2020 12:41:49 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 77CCC206D9 for ; Thu, 24 Sep 2020 12:41:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZEDgaREQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77CCC206D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Owner; bh=QSVmpPHTiBYWf1tXiNvw0pHPmYa9S4qFCK0BKzbFUR8=; b=ZEDgaREQhCJ3coDdNPn94sirEU 657lEUR/9Gcze1Oc9MF5/VxRlZ8pIISqEfyhTolgUya1rt/GLCwYIYWi6DhL8+jDH/8LVhj90a8w+ lIs7rkbQVXozFYs+FotjM5YzzibZCLyves0h+IorOunnGAsVywOo5ulHz8dZfsHSdmkZzomv0sm8K X2rgzXUet5jgfcpPJyZn9bKZytxnjVWqJ9OU6eo5OGCUWMraJ6FKFA5gxCRTSroPYSpFxKzWg3P38 3h+zVackBQcVhml3OZRCV7JY2aM1XGQEs6ptLsleakhYvrd+jxcj+DMHRMepfmrgQFo48I1wa3m2Q qGUa8GzQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kLQXn-0004Q9-Vx; Thu, 24 Sep 2020 12:40:16 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kLQXb-0004M8-DD for linux-arm-kernel@lists.infradead.org; Thu, 24 Sep 2020 12:40:07 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 391B2113E; Thu, 24 Sep 2020 05:40:02 -0700 (PDT) Received: from e108754-lin.cambridge.arm.com (unknown [10.1.199.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 701B03F73B; Thu, 24 Sep 2020 05:40:00 -0700 (PDT) From: Ionela Voinescu To: mingo@redhat.com, peterz@infradead.org, vincent.guittot@linaro.org, catalin.marinas@arm.com, will@kernel.org, rjw@rjwysocki.net, viresh.kumar@linaro.org Subject: [PATCH 0/3] condition EAS enablement on FI support Date: Thu, 24 Sep 2020 13:39:34 +0100 Message-Id: <20200924123937.20938-1-ionela.voinescu@arm.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200924_084003_585646_4735BC62 X-CRM114-Status: GOOD ( 12.40 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pm@vger.kernel.org, qperret@google.com, linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com, ionela.voinescu@arm.com, valentin.schneider@arm.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Given the maturity gained by cpufreq-based Frequency Invariance (FI) support following the patches at [1], this series conditions Energy Aware Scheduling (EAS) enablement on a frequency invariant system. Currently, EAS can be enabled on a system without FI support, leading to incorrect (energy-wise) task placements. As no warning is emitted, it could take some debugging effort to track the behavior back to the lack of FI support; this series changes that by disabling EAS (and advertising it) when FI support is missing. The series is structured as follows: - 1/3 - create function that can rebuild the scheduling and EAS' performance domains if EAS' initial conditions change - 2/3 - condition EAS enablement on FI support - 3/3 - arm64: rebuild scheduling and performance domains in the case of late, counter-driven FI initialisation. This series is dependent on the patches at [1] and based on linux-next 20200918. [1] Most recent version at: https://lore.kernel.org/lkml/20200901205549.30096-1-ionela.voinescu@arm.com/ Ionela Voinescu (3): sched/topology,schedutil: wrap sched domains rebuild sched/topology: condition EAS enablement on FIE support arm64: rebuild sched domains on invariance status changes arch/arm64/include/asm/topology.h | 1 + arch/arm64/kernel/topology.c | 10 ++++++++++ include/linux/sched/topology.h | 1 + kernel/sched/cpufreq_schedutil.c | 9 +-------- kernel/sched/topology.c | 26 +++++++++++++++++++------- 5 files changed, 32 insertions(+), 15 deletions(-) base-commit: b652d2a5f2a4e93d803cc33eb57fdc41ee528500 prerequisite-patch-id: 592324cdfe0735a845d827d23f4d042b66e480ae prerequisite-patch-id: b232a586616b573b7fc320df2dcf4783f26dc169 prerequisite-patch-id: 8a8238e55f4e522eb0ee44c1d4a083cac019959a prerequisite-patch-id: 8edd7fc97f15c7f737339d3e07dbcd6c6d99d986 prerequisite-patch-id: b24b28cd2ec4c929b770f5dd3eeb30f839f8d6ab