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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 61689C433E0 for ; Tue, 19 Jan 2021 19:04:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3043120776 for ; Tue, 19 Jan 2021 19:04:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403866AbhASTEr (ORCPT ); Tue, 19 Jan 2021 14:04:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392097AbhASRzx (ORCPT ); Tue, 19 Jan 2021 12:55:53 -0500 Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9C29C0612AB for ; Tue, 19 Jan 2021 09:50:26 -0800 (PST) Received: by mail-wr1-x436.google.com with SMTP id 7so13343472wrz.0 for ; Tue, 19 Jan 2021 09:50:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=5QyIodkkZpgmT2iR30lRiS5kXCqh8xngPTa6Q/4z6lo=; b=Qt4vvqQwyNDmj1bMkqPUojF1T9yjuifa6xKH6ZVj9WU0u5V7h88xINffkPLD6eWFWd 6n6fjXK0XkPDyarwiK7xVFtTmgKc83YLNx5r6Iq//VJe3vst6/cn7wK9WsSHtNoZ3REJ uluB68Cz1NwVCjVhuVrW+rg6bpItXeZvbkMPT8uoXY8BfbU0PjsD17Jjp6/NEd/IckZs 7/7vlPRj/H/UAlUBTXh8H2g31h6Ekn9Lj3Bd+ISx3bGcOuX6oyJqfm5WruawkQZMXA5u O4x2dNbr5zAibMsIv22wrwmmTVPxvFvfAQhht3gOtbV9RYh78LlquoDzErOXoPw9Tngz fizQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=5QyIodkkZpgmT2iR30lRiS5kXCqh8xngPTa6Q/4z6lo=; b=jz2GAOZRO3h3W2yjBJJWZHUj9g60D5iSbjSi5Ghsh4VJnYqK2t9LJ4bp534gOCBtN4 OHnMZ51L40Uz+4EksGv0+jaZ+lo5JDIwvzzjzGhaYsa7ycaIwApELTenfLjxg0yu9je/ UH3RHJcu2+I3lvxdCX5hJPynWr8daPwuh22U9/NkfQCjRqPE80A7WE4jS867rCAIlBSX 6I1U1X+0OePYnFzTSEBOlAZjITCcY48/XKAdkaGL8vg+DHUB4ZD7xwFtuDxEiPZP4TE2 O9/IH8Knm+3kyvno/j43Q+BuDUFAH+u59v+NjhhudKyt5Okm4MtW9E+LurPLqb3t3ABx YrKA== X-Gm-Message-State: AOAM530GcV5fMh2SboTS+lj60094AltO0zGsRLjeS59dcScWAkeO2coK y+2bRjm1z6JMfBe0f9cvOLIwyw== X-Google-Smtp-Source: ABdhPJzGnUo98SATM0bTGQ1kdvWBwjln5Z1FIJ7MlFjkOpQBZ/vX3cjfYeIa4p+F4/A3ybKR1o+A6w== X-Received: by 2002:a5d:58d7:: with SMTP id o23mr5580520wrf.288.1611078625553; Tue, 19 Jan 2021 09:50:25 -0800 (PST) Received: from google.com (230.69.233.35.bc.googleusercontent.com. [35.233.69.230]) by smtp.gmail.com with ESMTPSA id l20sm40342910wrh.82.2021.01.19.09.50.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jan 2021 09:50:24 -0800 (PST) Date: Tue, 19 Jan 2021 17:50:22 +0000 From: Quentin Perret To: Qais Yousef Cc: "Peter Zijlstra (Intel)" , Dietmar Eggemann , Vincent Guittot , linux-kernel@vger.kernel.org, Valentin Schneider , Morten Rasmussen Subject: Re: [PATCH] sched/eas: Don't update misfit status if the task is pinned Message-ID: References: <20210119120755.2425264-1-qais.yousef@arm.com> <20210119164027.drfpmrol3xhf4ckc@e107158-lin> <20210119174244.3p2graxd5gonv4di@e107158-lin> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210119174244.3p2graxd5gonv4di@e107158-lin> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 19 Jan 2021 at 17:42:44 (+0000), Qais Yousef wrote: > Hmm IIUC you want to still tag it as misfit so it'll be balanced within the > little cores in case there's another core with more spare capacity, right? Well yes but that's just a special case. But even you have big CPUs in the affinity mask, you may find that the task fits on none of the CPUs because they're currently under pressure. But in this case, you may still want to mark the task as misfit because being under pressure may be a relatively transient state.