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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 72E2FC4740C for ; Sun, 22 Sep 2019 18:47:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 44C09214D9 for ; Sun, 22 Sep 2019 18:47:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178063; bh=zRRSafVxTQ5grYDlfaRz+gppOToyxtG9qdrTKTUUJ/U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Hnoa60smRznWB77CGEYpuzFDlCEPLvZ+CKgxm4UQxTQ3xX+Q4TP4Q4odDKr/b+nTT mhlNGyVwuY2UCk54Kl3oqq7ypJC+IJdfWNSbCrqFlJLcM2cDUXVB7APKmAQb4w07Ab HdyZqJdRpT7Zl2UpNooCpj27qS1bqoo08NbqjKMM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391103AbfIVSrm (ORCPT ); Sun, 22 Sep 2019 14:47:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:44134 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391077AbfIVSrj (ORCPT ); Sun, 22 Sep 2019 14:47:39 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 910A4214D9; Sun, 22 Sep 2019 18:47:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178059; bh=zRRSafVxTQ5grYDlfaRz+gppOToyxtG9qdrTKTUUJ/U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g6ndi1jqpjctBHCoVdYXb9BEwFLo1Vm9idjZDaBw6rETZGhZ7itm1EidiaqgN34Y9 TECgr7CPpEtR/5mmjwjL/E00brukx7QS83wXdJijJXOFIam7t7A20A2PNWtSHc09he RpM1GrB0BZ/cK4eXsr6tGCDVM+/LJtiiQbfdLMVA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Douglas RAILLARD , Peter Zijlstra , "Rafael J . Wysocki" , Sasha Levin Subject: [PATCH AUTOSEL 5.3 135/203] sched/cpufreq: Align trace event behavior of fast switching Date: Sun, 22 Sep 2019 14:42:41 -0400 Message-Id: <20190922184350.30563-135-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922184350.30563-1-sashal@kernel.org> References: <20190922184350.30563-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Douglas RAILLARD [ Upstream commit 77c84dd1881d0f0176cb678d770bfbda26c54390 ] Fast switching path only emits an event for the CPU of interest, whereas the regular path emits an event for all the CPUs that had their frequency changed, i.e. all the CPUs sharing the same policy. With the current behavior, looking at cpu_frequency event for a given CPU that is using the fast switching path will not give the correct frequency signal. Signed-off-by: Douglas RAILLARD Acked-by: Peter Zijlstra (Intel) Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- kernel/sched/cpufreq_schedutil.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index 867b4bb6d4beb..b03ca2f73713d 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -117,6 +117,7 @@ static void sugov_fast_switch(struct sugov_policy *sg_policy, u64 time, unsigned int next_freq) { struct cpufreq_policy *policy = sg_policy->policy; + int cpu; if (!sugov_update_next_freq(sg_policy, time, next_freq)) return; @@ -126,7 +127,11 @@ static void sugov_fast_switch(struct sugov_policy *sg_policy, u64 time, return; policy->cur = next_freq; - trace_cpu_frequency(next_freq, smp_processor_id()); + + if (trace_cpu_frequency_enabled()) { + for_each_cpu(cpu, policy->cpus) + trace_cpu_frequency(next_freq, cpu); + } } static void sugov_deferred_update(struct sugov_policy *sg_policy, u64 time, -- 2.20.1