From: Thomas Gleixner <tglx@linutronix.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: arnd@arndb.de, anna-maria@linutronix.de, frederic@kernel.org,
peterz@infradead.org, luto@kernel.org, mingo@redhat.com,
juri.lelli@redhat.com, vincent.guittot@linaro.org,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de, vschneid@redhat.com,
linux-kernel@vger.kernel.org, oliver.sang@intel.com
Subject: Re: [PATCH v2 4/6] hrtimer: Re-arrange hrtimer_interrupt()
Date: Mon, 02 Feb 2026 15:05:14 +0100 [thread overview]
Message-ID: <87bji7fdgl.ffs@tglx> (raw)
In-Reply-To: <20260121162507.877520597@infradead.org>
On Wed, Jan 21 2026 at 17:20, Peter Zijlstra wrote:
> Rework hrtimer_interrupt() such that reprogramming is split out into
> an independent function at the end of the interrupt.
>
> This prepares for reprogramming getting delayed beyond the end of
> hrtimer_interrupt().
>
> Notably, this changes the hang handling to always wait 100ms instead
> of trying to keep it proportional to the actual delay. This simplifies
> the state, also this really shouldn't be happening.
Indeed.
> /*
> + * Very similar to hrtimer_force_reprogram(), except it deals with
> + * in_hrirq and hang_detected.
in_hrtirq
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
next prev parent reply other threads:[~2026-02-02 14:05 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-21 16:20 [PATCH v2 0/6] hrtimer/sched: Improve hrtick Peter Zijlstra
2026-01-21 16:20 ` [PATCH v2 1/6] sched/eevdf: Fix HRTICK duration Peter Zijlstra
2026-01-22 10:53 ` Juri Lelli
2026-02-05 8:38 ` Peter Zijlstra
2026-01-21 16:20 ` [PATCH v2 2/6] hrtimer: Optimize __hrtimer_start_range_ns() Peter Zijlstra
2026-01-22 11:00 ` Juri Lelli
2026-02-02 12:28 ` Thomas Gleixner
2026-01-21 16:20 ` [PATCH v2 3/6] hrtimer,sched: Add fuzzy hrtimer mode for HRTICK Peter Zijlstra
2026-01-22 13:12 ` Juri Lelli
2026-01-23 20:04 ` Steven Rostedt
2026-02-02 14:02 ` Thomas Gleixner
2026-01-21 16:20 ` [PATCH v2 4/6] hrtimer: Re-arrange hrtimer_interrupt() Peter Zijlstra
2026-02-02 14:05 ` Thomas Gleixner [this message]
2026-01-21 16:20 ` [PATCH v2 5/6] entry,hrtimer: Push reprogramming timers into the interrupt return path Peter Zijlstra
2026-01-23 20:08 ` Steven Rostedt
2026-01-23 21:04 ` Peter Zijlstra
2026-02-02 14:37 ` Thomas Gleixner
2026-02-02 16:33 ` Peter Zijlstra
2026-02-02 23:28 ` Thomas Gleixner
2026-02-03 8:14 ` Thomas Gleixner
2026-02-04 13:58 ` Peter Zijlstra
2026-01-21 16:20 ` [PATCH v2 6/6] sched: Default enable HRTICK Peter Zijlstra
2026-01-21 22:24 ` Phil Auld
2026-01-22 11:40 ` Peter Zijlstra
2026-01-22 12:31 ` Phil Auld
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