From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 822A73644B6 for ; Fri, 3 Apr 2026 22:14:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775254447; cv=none; b=AjRsAlbboU0vy8EMVOinDeyUtuKYuN0DdwHHqsKyvs7TMOohLDix4F0ah7j/bb7FjsiTSb+Lz8RdguIM2k5a2yFAXwXtJ3vgV5LebAgdvpuXsPAWa5EDVBUfAtfePWk1XbILzkqMoo8I1MnxvzZDjbQGIGQcESjjNfFfr9HIMHo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775254447; c=relaxed/simple; bh=ZTYedjz032BkkEo+qL0KEeF7Urpv0PMZb1HMbKuCLvc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=nbB4l6vS7Al0FZjJ+fDdnY8H6D2Vlx6UPK+YhWwYZgA9QK+mqC8+oObLoCtwc78O9HEHRCKPhb3DDhIWSQrFmqijq0IS6qj9Mv1YhEKsSm6SRwN+q6Bxzm7WOUtEXRwEhlvclfiKr1ALoKATFAFHXmnsKXGdvGUR5v5N3CvS7TA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mRynCGUH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mRynCGUH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 624CBC4CEF7; Fri, 3 Apr 2026 22:14:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775254447; bh=ZTYedjz032BkkEo+qL0KEeF7Urpv0PMZb1HMbKuCLvc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=mRynCGUHQeGC8sIAZy6Vrxncbao4DPQ0RAemSmud/Tnk1isgG9w470CgNsaYyx8xC 0oQcbRn3oUeKaKPUjrqxO4Wv2BFSAbfNqWcZK/VCPXNeh9YArUiqQnKCoAjZQHMMdA ENEVZwv73WyIKYDyqJmkWGPpLyfI/6FIx98xMRDdxt8v5/Rpj064Qn3VyY3Esw90y2 AUeoIUmllpPjkQmF9R+nto1lDUcB9gz3drO5x43dA57C9IQg4MAYEJ3Qn3a2kwFbou ixSARfEwNRR3ijz5zfaeuo0Rtp8zZ83V0wHCADBOmEXu3xfNTrgR0dT3pmA4cmOyB0 ItVICpKYC7/dQ== From: Thomas Gleixner To: Peter Zijlstra Cc: Borislav Petkov , Calvin Owens , Petr Mladek , linux-kernel@vger.kernel.org, arighi@nvidia.com, yaozhenguo1@gmail.com, tj@kernel.org, feng.tang@linux.alibaba.com, lirongqing@baidu.com, realwujing@gmail.com, hu.shengming@zte.com.cn, dianders@chromium.org, joel.granados@kernel.org, Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Frederic Weisbecker , Anna-Maria Behnsen , x86@kernel.org Subject: Re: [PATCH] clockevents: Prevent timer interrupt starvation In-Reply-To: <87wlyn68lg.ffs@tglx> References: <87v7ejetl1.ffs@tglx> <875x6a913n.ffs@tglx> <20260401163435.GGac1JG42tWmsCKL37@fat_crate.local> <87jyup70ka.ffs@tglx> <20260403121648.GZ3738010@noisy.programming.kicks-ass.net> <87341c6mt0.ffs@tglx> <20260403210145.GD2872@noisy.programming.kicks-ass.net> <87wlyn68lg.ffs@tglx> Date: Sat, 04 Apr 2026 00:14:03 +0200 Message-ID: <87pl4f66ac.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Apr 03 2026 at 23:24, Thomas Gleixner wrote: > On Fri, Apr 03 2026 at 23:01, Peter Zijlstra wrote: >> On Fri, Apr 03, 2026 at 06:17:15PM +0200, Thomas Gleixner wrote: >> >> Doesn't that want to be something like this instead? > > Duh. Yes. I'm clearly not seeing the forest for the trees anymore. But thinking more about it. That's a stretch for backporting. So I rather stay with the current approach and do the cleanup on top, which then also should obviously do dev->next_event = KTIME_MAX; and remove it from the handlers, no? Thanks, tglx