Messages in this thread | | | Date | Fri, 2 Sep 2022 09:53:50 +0200 | Subject | Re: [RFC PATCH 1/1] sched/pelt: Introduce PELT multiplier | From | Dietmar Eggemann <> |
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On 29/08/2022 12:13, Vincent Guittot wrote: > On Mon, 29 Aug 2022 at 12:03, Peter Zijlstra <peterz@infradead.org> wrote: >> >> On Mon, Aug 29, 2022 at 10:08:13AM +0200, Peter Zijlstra wrote: >>> On Mon, Aug 29, 2022 at 07:54:50AM +0200, Dietmar Eggemann wrote: >>>> From: Vincent Donnefort <vincent.donnefort@arm.com>
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>>> Hurmph... I'd almost go write you something like >>> static_call()/static_branch() but for immediates. >>> >>> That said; given there's only like 3 options, perhaps a few >>> static_branch() instances work just fine ? >> >> Also, I'm not at all sure about exposing that as an official sysctl. > > Me too, I would even make it a boot time parameter so we can remove
Isn't a sched feature even less official than a boot parameter? But AFAIK at least some of the Android folks want to change this during runtime and they don't have debugfs mounted.
> the new clock_task_mult clock and left shift clock_taslk or the delta > before passing it to clock_pelt
We still need rq_clock_task_mult(rq), i.e. `rq->clock_task_mult` in _update_idle_rq_clock_pelt() though.
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