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 DC76A2F690F; Tue, 7 Apr 2026 10:01:08 +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=1775556071; cv=none; b=nHTS775iLcBSdgOOapBGL9rdEdyFzqx3w6GMtFWuALbHjq/uOxgO9lHLNpdGA2bZncL+S55Z8s5ieIHGx9fWJkdyccceagr5+pQDykY8imz1bt5F31EoWmM0PAaeQfmGdv/qSrMj7pZ6/9NYJGVfemPz6wraFemZgiNJzkQfUqA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775556071; c=relaxed/simple; bh=SVZvZcW23j5b7OrpPVl9lfpOYgcKGuSaeaxO/0W/Z6I=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bmXqdKm6ppXsSSIHxtNdqIny/ckuKzbj4Gwye8VbDK0MqXn2XM3EPGxKkgWwrkekK8beRMXsA+gYU7qdgxDPBlBxYeg4gfczy96+ADzmTbxX9XUTQPNtsU6fK4BFo48Yxte2CGOWeV8RjM2F1zVaM8Hlakr0GB4b4vKqCNSrcw8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (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=MEx2UPhZ; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (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="MEx2UPhZ" 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=VL2JbSxgAfIh2iradYyQ8JthT9/Jt9Wx2KnswOgunw8=; b=MEx2UPhZGulHZfmKdMkP0k5hUr PxmPoqmdD+IgVqSkJF5l8y8X7t6WGVdvWsRO6jjUxDFGG7gvisjFSPpVKVkYHzcSRcSTvtfqKPysp dq8osPALbNAqR5rOqwTRnbk8KPctMr43kPt3/BhNeuPLdLvSO4IdERZGgCJ64ami7WXALT2j3SzoU vp7pfJIztl7WG1iqHhf7N6qhCulvC8eBjxJ+9M3Qa0VJ0cMG+xBPdObLga7Cxz8O5cwa/O3nQMjGm nHWH7U72mN8NYjko4U7r8UZghLqlZ2wlVEn/T3bE6D7pXPy3OZZZYMho6ppn0TLusF0WQ6c89ZT5A A+dNRrIA==; 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 4.98.2 #2 (Red Hat Linux)) id 1wA3F3-00000007zZq-2JSP; Tue, 07 Apr 2026 10:01:05 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 15FE730035C; Tue, 07 Apr 2026 12:01:05 +0200 (CEST) Date: Tue, 7 Apr 2026 12:01:05 +0200 From: Peter Zijlstra To: Thomas Gleixner Cc: LKML , Anna-Maria Behnsen , Frederic Weisbecker , Calvin Owens , Ingo Molnar , John Stultz , Stephen Boyd , Alexander Viro , Christian Brauner , Jan Kara , linux-fsdevel@vger.kernel.org, Sebastian Reichel , linux-pm@vger.kernel.org, Pablo Neira Ayuso , Florian Westphal , Phil Sutter , netfilter-devel@vger.kernel.org, coreteam@netfilter.org Subject: Re: [patch 05/12] posix-timers: Handle the timer_[re]arm() return value Message-ID: <20260407100105.GQ2872@noisy.programming.kicks-ass.net> References: <20260407083219.478203185@kernel.org> <20260407083247.831143104@kernel.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: <20260407083247.831143104@kernel.org> On Tue, Apr 07, 2026 at 10:54:38AM +0200, Thomas Gleixner wrote: > The [re]arm callbacks will return true when the timer was queued and false > if it was already expired at enqueue time. > > In both cases the call sites can trivially queue the signal right there, > when the timer was already expired. > > Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel)