From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BABD061FD5; Tue, 25 Jun 2024 07:30:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719300623; cv=none; b=C98uLVx5q2M7L9WCceqvDruim+lbjMftUkBBUtkTqM2yIMtzSsHnAPWuPA0k9zTyl2WTBEOws5rJIGv2f8G0aUs0R2e6DzZmJZqrOtmvue168uuflG/z5durcwJdy4iRM/YF/15kmc3xa6x81s/j9twV0cD5vkuls6XujWa9Rl8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719300623; c=relaxed/simple; bh=yB5Svsp9mNzKIuZnzXqjiK08dhoftGN+4t+vx+2N1vU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=G7zrue2G6fNW5fnMOoc42wQe1owAOIqlAEssqLHtJ8NThMAUt3tVBP2MFYiKVuKQVgUycuQ9bA7KcSUPDq0q+XI0QuN/5MXwn5Rdv34SH7HrihMQc1jtMcSkV7PxUK9tcuNhuj9wuj/5zhToJoy/lkEF6UyaGS1InnmsKK6i71U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=BXgsGVKv; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="BXgsGVKv" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=yB5Svsp9mNzKIuZnzXqjiK08dhoftGN+4t+vx+2N1vU=; b=BXgsGVKv1z6yJk6YgNCi2gSK8k RHBxRV1FJbPzL3TgsWI85R2+Cwh5zy+tZWXlstECVPG6+aBkqTsIzZv1ixJ3DUKtoElLKDODDe/Ag rs4JL43j78IG9vxVDMMJEdzuISeBfIJCuAwHzFqhgG5DiVGTF9RLo2i4j9HpAgJFwl66os2sGt3vf 0h4iqYU6IgAnqvQM6XEwkgLXpvM7CqrJZiK843AkkaO5UzSrlh+fAh6I8SAsAkjEaHkDTU33mpk+m +S8etuRncziA6iEzbprfr5zn3KD1KWPSd2owROhf3QUJGn2ZIeRU3busQcqaWlPs/PnAspAOLLDsC 7YKnYROg==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sM0cl-00000008Mlp-1BYZ; Tue, 25 Jun 2024 07:29:56 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 65D53300754; Tue, 25 Jun 2024 09:29:54 +0200 (CEST) Date: Tue, 25 Jun 2024 09:29:54 +0200 From: Peter Zijlstra To: Tejun Heo Cc: torvalds@linux-foundation.org, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org, joshdon@google.com, brho@google.com, pjt@google.com, derkling@google.com, haoluo@google.com, dvernet@meta.com, dschatzberg@meta.com, dskarlat@cs.cmu.edu, riel@surriel.com, changwoo@igalia.com, himadrics@inria.fr, memxor@gmail.com, andrea.righi@canonical.com, joel@joelfernandes.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, kernel-team@meta.com Subject: Re: [PATCH 04/39] sched: Add sched_class->reweight_task() Message-ID: <20240625072954.GQ31592@noisy.programming.kicks-ass.net> References: <20240501151312.635565-1-tj@kernel.org> <20240501151312.635565-5-tj@kernel.org> <20240624102331.GI31592@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Jun 24, 2024 at 01:59:02PM -1000, Tejun Heo wrote: > Were you trying to say that if the idle policy were to implement > ->reweight_task(), it wouldn't be called? This. IDLE really is FAIR but with a really small weight.