From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=90.155.92.199 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794400293; b=f4M0eN+vk0Wa6EFE5ijPMoRgUvy7aR4McVuaaInBCzW0tAXbAAC/Y0dL7rWz8JerptrJ gV1ET1FzmDiTkw7vpc3ucmk0qVnKI8prEOf1P/785GbsRYHYkke21Dv+ujRCjjEZX0yD/ bGfsSRcYFvuYhbOiTK68ucIiZ7X4b0L3plTDOw7riSvQSbKH8CUzkiHj06sElWqRLj9dq JBXnqsZoKEVTTTPvd+q3iEe+FmwMeKcTQVql5cHCvBAt+6xOtYpi5cv//QoPd4x9408vU 9XjGl9ynb0TFhcD+6esL84YJdbMMPkk7hVNezbquUO894/sOjz2UsE+t1/QFxeYzlPQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794400293; h=DMARC-Filter:DKIM-Signature:Received:Received:Date:From:To:Cc: Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=9PwwTo9/HuoiZZpTba89sDu/cM6+u1GZw2VYNJUEfCI=; b=q9Xjkg52yJYIweBxp6kN6S2r2oAzLzjZzYWc6pqGFzNvY223SahxBEnATfkovleG9nr+ c402j1nGtcIdyhCmksxnyZ307duIxFmYVeW/7x7qn7YyOIO1nfExOh8nf3daH7HTlq2RR zr6/mNiQZp06Dfjmteygfq7q5+CXLQjgHZzoQM7KW4cNU0QM4y5G+kuJ1QZyjwY+KyICL 0TG+9PBow+e+eOkRznRIvkqWlNyCOLZMTLnkosarQ7Wmkkny1OpvUl91wSFDo8siOig2n X4r+rZ/jeapipr0WBCB/Ez88PkA8tTjVPUVvcxiEgEIuC2Ug2FalKS3Cpqp+DLsNitA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=infradead.org; spf=pass smtp.mailfrom=infradead.org; dkim=pass header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=R5zy21t9; arc=none smtp.remote-ip=90.155.92.199 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7EDA606A33A for ; Wed, 11 Nov 2026 12:31:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org E7EDA606A33A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=R5zy21t9 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=9PwwTo9/HuoiZZpTba89sDu/cM6+u1GZw2VYNJUEfCI=; b=R5zy21t9mHOmsQUaei6N4Wq5WK riLQIaYb1g5TvUzvVGQeGwAgaSq6hXvsErJj/eZVh/z0KHwbhm1LgSNE47EmixYw0xehW/IUj5Mym eX+HXZKHB0fx2CMl7hTMGBC/E6K/jyQmp7hBeoRHGrXzkXFSBj90tA/v4V+9Qx04elOV64qX7FF+0 B+RdBsjXB0q1E29276jkrPpgiNxaBmULrOUgLzXPwONc6NyqQbzcVhmcj58FTP/WFA6D2g7J5zGkw ldEkm3VceLwbk5/IiIp8CTLyRjoqOm28jQ652NPxsMF6XPSpbwoASvC8yCiA8ZUwvnrnpCAXAMNup YUbCyI+w==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.100.1 #2 (Red Hat Linux)) id 1xR7U5-000000097hC-21KS; Wed, 11 Nov 2026 12:31:25 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 0077B3005AF; Wed, 11 Nov 2026 13:31:23 +0100 (CET) Date: Wed, 11 Nov 2026 13:31:23 +0100 From: Peter Zijlstra To: Tejun Heo Cc: mingo@kernel.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, linux-kernel@vger.kernel.org, ziqianlu@bytedance.com Subject: Re: [PATCH v2 10/12] sched/fair: Reflow pick_task_fair() / newidle Message-ID: <20261111123123.GN2668200@noisy.programming.kicks-ass.net> References: <20261107115913.261163891@infradead.org> <20261107120207.891592828@infradead.org> <35385d363689d515faa172d876170417@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35385d363689d515faa172d876170417@kernel.org> On Wed, Nov 11, 2026 at 01:02:45AM -1000, Tejun Heo wrote: > an rq which it already updated now marked as not updated. Maybe > double_rq_clock_clear_update() should follow __rq_clock_clear()? Yes, definitely. I seem to have completely missed double_rq_clock_clear_update() and somehow my test run; I promise, I did one (although I didn't test sched_ext at all); didn't trigger nothing :/