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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 D7E7FC432BE for ; Tue, 31 Aug 2021 11:10:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF33960249 for ; Tue, 31 Aug 2021 11:10:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241492AbhHaLLW (ORCPT ); Tue, 31 Aug 2021 07:11:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46400 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241457AbhHaLLU (ORCPT ); Tue, 31 Aug 2021 07:11:20 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F557C061575; Tue, 31 Aug 2021 04:10:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=xIcniAXVEz+AXN/0a4kDY1GAZnOitc7zGFHH2uOA5CU=; b=ljw4Ct+lubDUoFc4ijz3NpAu0X x6JBsVemBNt562JSa2TK1R9BqpyNgOuDDVW2l3KSMDETd2LDQmi6uEPgPNb5zf/lzaFW+XZ+FWolY 4SVqAsJ7rSXz0Qxt+hDYqUIPrn9UWlA1C4m7ngt8KSapHWc4QowuwbaphXZOHf39UuzCgH5N61N3W IQIAhDG60KSjI/DLPxkrd8/yESMJRjlaNxiF9vJ5bc/jlc8FcGbSm/pKwVSW282qjKTf7eknfXqpR Y4zJQ1FN7mpMyfyFo/B+LJ3PnbgFsnZosKFPEbBw2PsK1cczP2Z/y99CtsQmQEok6RXwUAF27KGsk 9UgZNo2g==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mL1dE-0017y2-9Z; Tue, 31 Aug 2021 11:08:52 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 823713005AD; Tue, 31 Aug 2021 13:08:43 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 746642C83EADD; Tue, 31 Aug 2021 13:08:43 +0200 (CEST) Date: Tue, 31 Aug 2021 13:08:43 +0200 From: Peter Zijlstra To: Yafang Shao Cc: mingo@redhat.com, mgorman@suse.de, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, achaiken@aurora.tech, lkp@intel.com, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org Subject: Re: [PATCH v3 4/7] sched: make the output of schedstats independent of fair sched class Message-ID: References: <20210824112946.9324-1-laoar.shao@gmail.com> <20210824112946.9324-5-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210824112946.9324-5-laoar.shao@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 24, 2021 at 11:29:43AM +0000, Yafang Shao wrote: > The per cpu stats can be show with /proc/sched_debug, which includes the > per cpu schedstats of each task group. Currently these per cpu > schedstats only show for the fair sched class. If we want to support > other sched classes, we have to make these output independent of fair > sched class. Arguably the whole rt group stuff needs to die, please don't enable it further.