From: Peter Zijlstra <peterz@infradead.org>
To: tglx@linutronix.de
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: [PATCH 0/8] hrtimer/sched: Improve hrtick
Date: Thu, 18 Sep 2025 09:52:19 +0200 [thread overview]
Message-ID: <20250918075219.091828500@infradead.org> (raw)
Hi!
A few patches trying to improve the sched hrtick feature, which is currently
disabled due to overhead.
I wrote these after the last OSPM, but I've been sitting on them because 0-day
is not having a good time with the second to last patch. I've not been able to
reproduce :-(
Anyway, the first few patches should be 'good' and hopefully one of you will
spot my 'obvious' fail in that late patch.
For those of you rocking ARM64 systems, if you pick up the generic entry patches:
https://lkml.kernel.org/r/20250916082611.2972008-1-ruanjinjie@huawei.com
this late patch should also 'work' (or not as the case might be) for you.
Patches also here:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/hrtick
next reply other threads:[~2025-09-18 8:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 7:52 Peter Zijlstra [this message]
2025-09-18 7:52 ` [PATCH 1/8] sched: Fix hrtick() vs scheduling context Peter Zijlstra
2025-09-19 3:53 ` K Prateek Nayak
2025-09-23 0:24 ` John Stultz
2025-12-03 18:25 ` [tip: sched/urgent] sched/hrtick: Fix hrtick() vs. " tip-bot2 for Peter Zijlstra
2025-12-03 18:31 ` tip-bot2 for Peter Zijlstra
2025-12-06 9:10 ` tip-bot2 for Peter Zijlstra
2025-09-18 7:52 ` [PATCH 2/8] sched/fair: Limit hrtick work Peter Zijlstra
2025-09-19 14:59 ` K Prateek Nayak
2025-11-28 8:25 ` Peter Zijlstra
2025-12-14 7:46 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2025-09-18 7:52 ` [PATCH 3/8] sched/eevdf: Fix HRTICK duration Peter Zijlstra
2025-09-19 15:34 ` K Prateek Nayak
2025-11-28 8:32 ` Peter Zijlstra
2025-09-18 7:52 ` [PATCH 4/8] hrtimer: Optimize __hrtimer_start_range_ns() Peter Zijlstra
2025-09-18 7:52 ` [PATCH 5/8] hrtimer,sched: Add fuzzy hrtimer mode for HRTICK Peter Zijlstra
2025-09-18 7:52 ` [PATCH 6/8] hrtimer: Re-arrange hrtimer_interrupt() Peter Zijlstra
2025-09-18 7:52 ` [RFC][PATCH 7/8] entry,hrtimer: Push reprogramming timers into the interrupt return path Peter Zijlstra
2025-09-20 9:29 ` Thomas Gleixner
2025-09-23 7:52 ` Peter Zijlstra
2025-09-23 8:18 ` Peter Zijlstra
2025-09-18 7:52 ` [RFC][PATCH 8/8] sched: Default enable HRTICK Peter Zijlstra
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