From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 5D8E12F9C37; Wed, 14 Oct 2026 13:08:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791983318; cv=none; b=P6jDfO6gV0tHWk9ZoAxS8jgTkg9/RSJoOtMhBbBXENAuj4FZFXS33ufCQTYuKQnWV3IyJX1rgNGi12VjDl0OIs8kReXm2ODjx84mskV7QLQ3H3MWZuiJOpZyVOWShTWXQD5v1Wqga/CVtmOAi1aq97l5a1KzLbi+/NL6OPcJZyQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791983318; c=relaxed/simple; bh=qpDVtITf3q8Ifbj2iEUKwlnz+d7HVCX5OeHwbVW15bw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=V8IMuRp6Dx2hjivTFFJi9/D8PWFMltS549AshIpD9W2O99TBw/+/UQdgWdOpiC6w+NC62amCx6hZfr8jiKFAYNW6oydCCZSshAMRuE8TQfvKowshc3wii46EvKi6fvHEZSTcFD+EMLfA42m2idBJOdYfiBAMXHXJHiHUqotHWxU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=pass smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=UfOmPQFf; arc=none smtp.client-ip=90.155.50.34 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.b="UfOmPQFf" 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=qpDVtITf3q8Ifbj2iEUKwlnz+d7HVCX5OeHwbVW15bw=; b=UfOmPQFfXG9yQ7V+vbm7oiZOGW NkkZDTPdShRGr1WZwDjypGTA7zupgTteD6J1yBpVPpbVLHJTv0YV7Zl/Nabgk+fVnfYN4E58omPO1 yf/zzdLKDeqzn7lKGFMsQ9OlIxVB6lipNntBqNlOK0FbScSBo8NoGe/qQBqnyZN8sfvTDo8+QlZ83 rn9JWN0qxxqWnYagLnPikr7k8ZB1IeCiDBFZ+EOzfNVwhMAQqEBdYov75Y7E0BD8Gx6BY1zscNr3S DowBcc+dAVyNZTBi0iPpA4jytlU+03GZu34ZslvnXA4wVweNjUhWII+52gjtmFPlz8lwC2OlIncTd //Xt9exA==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1xGydP-00000003mxp-317m; Wed, 14 Oct 2026 13:03:07 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 6EC9C302FBC; Wed, 14 Oct 2026 15:03:06 +0200 (CEST) Date: Wed, 14 Oct 2026 15:03:06 +0200 From: Peter Zijlstra To: Catalin Marinas Cc: "Christoph Lameter (Ampere)" , Ankur Arora , Haris Okanovic , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, bpf@vger.kernel.org, arnd@arndb.de, will@kernel.org, akpm@linux-foundation.org, mark.rutland@arm.com, ast@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, memxor@gmail.com, zhenglifeng1@huawei.com, xueshuai@linux.alibaba.com, rdunlap@infradead.org, david.laight.linux@gmail.com, broonie@kernel.org, joao.m.martins@oracle.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, ashok.bhat@arm.com Subject: Re: [PATCH v15 12/16] cpuidle/poll_state: Wait for need-resched via tif_need_resched_relaxed_wait() Message-ID: <20261014130306.GK2009045@noisy.programming.kicks-ass.net> References: <20260831202251.305046-1-ankur.a.arora@oracle.com> <20260831202251.305046-13-ankur.a.arora@oracle.com> <178908146776.2725577.2613699832033292946.b4-review@b4> <878q58z2ej.fsf@oracle.com> <3e8bda45-0aa7-d0be-8aad-dab95902dcde@gentwo.org> Precedence: bulk X-Mailing-List: linux-pm@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 Wed, Oct 14, 2026 at 10:00:18AM +0100, Catalin Marinas wrote: > It > would also be nice to get some acks from the atomic infrastructure > maintainers. That'd be Mark and me I suppose. I don't see anything substantial happening, just plumbing the new function. Now, I really rather dislike timeout based schemes, but given we have users, I suppose this does improve things. We should however be weary of new ones I suppose.