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From: Thomas Gleixner <tglx@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>, Calvin Owens <calvin@wbinvd.org>,
	Petr Mladek <pmladek@suse.com>,
	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 <mingo@redhat.com>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	Frederic Weisbecker <frederic@kernel.org>,
	Anna-Maria Behnsen <anna-maria@linutronix.de>,
	x86@kernel.org
Subject: Re: [PATCH] clockevents: Prevent timer interrupt starvation
Date: Sat, 04 Apr 2026 00:14:03 +0200	[thread overview]
Message-ID: <87pl4f66ac.ffs@tglx> (raw)
In-Reply-To: <87wlyn68lg.ffs@tglx>

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

  reply	other threads:[~2026-04-03 22:14 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-24 23:32 [BUG] Random hard lockup with userspace %ip on 7.0-rc5 Calvin Owens
2026-03-25  9:03 ` Petr Mladek
2026-03-25 16:56   ` Thomas Gleixner
2026-04-01  1:58     ` Calvin Owens
2026-04-01 15:01       ` Thomas Gleixner
2026-04-01 15:12         ` Borislav Petkov
2026-04-01 16:34         ` Borislav Petkov
2026-04-02 17:07           ` [PATCH] clockevents: Prevent timer interrupt starvation Thomas Gleixner
2026-04-03  5:11             ` Calvin Owens
2026-04-03 14:41               ` Thomas Gleixner
2026-04-03 15:58                 ` Calvin Owens
2026-04-03 19:00                   ` Thomas Gleixner
2026-04-04  0:15                     ` Calvin Owens
2026-04-03 12:16             ` Peter Zijlstra
2026-04-03 14:43               ` Thomas Gleixner
2026-04-03 16:17               ` Thomas Gleixner
2026-04-03 21:01                 ` Peter Zijlstra
2026-04-03 21:24                   ` Thomas Gleixner
2026-04-03 22:14                     ` Thomas Gleixner [this message]
2026-04-03 22:21                       ` Peter Zijlstra
2026-03-27  1:36   ` [BUG] Random hard lockup with userspace %ip on 7.0-rc5 Feng Tang
2026-03-27 15:36     ` Calvin Owens

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