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Groups > linux.kernel > #1307466
| From | Daniel Lezcano <daniel.lezcano@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period |
| Date | 2016-01-12 15:20 +0100 |
| Message-ID | <qQ7XK-23e-49@gated-at.bofh.it> (permalink) |
| References | <qNYc9-2Y2-7@gated-at.bofh.it> <qNYc9-2Y2-5@gated-at.bofh.it> <qOHsB-gc-7@gated-at.bofh.it> <qQ6yD-WB-33@gated-at.bofh.it> <qQ7uH-1zT-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 01/12/2016 02:42 PM, Thomas Gleixner wrote:
> On Tue, 12 Jan 2016, Daniel Lezcano wrote:
>> On 01/08/2016 04:43 PM, Thomas Gleixner wrote:
>>>> + /*
>>>> + * Register the setup/free irq callbacks, so new interrupt or
>>>> + * freed interrupt will update their tracking.
>>>> + */
>>>> + ret = register_irq_timings(&irqt_ops);
>>>> + if (ret) {
>>>> + pr_err("Failed to register timings ops\n");
>>>> + return ret;
>>>> + }
>>>
>>> So that stuff is installed unconditionally. Is it used unconditionally as
>>> well?
>>
>> Sorry, I am not sure to understand your question. If the kernel is compiled
>> with CONFIG_CPU_IDLE_GOV_SCHED=y, this code is enabled and use the irq
>> timings. The condition comes from the compilation option.
>
> The question is whether the option also activates that thing or is there still
> some /sys/whatever/idlegov magic where you can (de)select it.
Yes, in the next patches of the series I did not send, we can switch to
the cpuidle's governor framework or idle-sched. I will look at how to
disable it when switching to the cpuidle's governors.
Thanks
-- Daniel
--
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[RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-06 16:30 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-01-06 18:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-07 16:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-01-12 20:30 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-10 23:40 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-01-10 23:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-11 00:00 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-01-11 00:20 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Thomas Gleixner <tglx@linutronix.de> - 2016-01-08 16:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-12 13:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Thomas Gleixner <tglx@linutronix.de> - 2016-01-12 14:50 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-12 15:20 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Thomas Gleixner <tglx@linutronix.de> - 2016-01-12 15:30 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-12 16:00 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Thomas Gleixner <tglx@linutronix.de> - 2016-01-12 16:20 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-01-12 17:10 +0100
Re: [RFC PATCH 2/2] sched: idle: IRQ based next prediction for idle period Thomas Gleixner <tglx@linutronix.de> - 2016-01-13 10:20 +0100
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