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[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.