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Groups > linux.kernel > #1340495

Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period

From Daniel Lezcano <daniel.lezcano@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period
Date 2016-02-23 11:20 +0100
Message-ID <r5ieu-3Qp-9@gated-at.bofh.it> (permalink)
References <r2Q31-1iJ-35@gated-at.bofh.it> <r2Q32-1iJ-49@gated-at.bofh.it> <r5i4O-3MQ-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 02/23/2016 11:06 AM, Shreyas B Prabhu wrote:
>
>
> On 02/16/2016 09:13 PM, Daniel Lezcano wrote:
> [...]
>> +	if (index < 0) {
>> +		/*
>> +		 * No idle callbacks fulfilled the constraints, jump
>> +		 * to the default function like there wasn't any
>> +		 * cpuidle driver.
>> +		 */
>> +		goto default_idle;
>> +	} else {
>> +		/*
>> +		 * Enter the idle state previously returned by the
>> +		 * governor decision.  This function will block until
>> +		 * an interrupt occurs and will take care of
>> +		 * re-enabling the local interrupts
>> +		 */
>> +		return cpuidle_enter(drv, dev, index);
>
> Minor point. You are not calling rcu_idle_exit() in else block. This
> should probably be
> 		ret = cpuidle_enter(drv, dev, index);
>                  goto out;

Yes. Right.

Thanks for the review.

   -- Daniel


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Thread

[PATCH V3 1/2] irq: Track the interrupt timings Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-16 16:50 +0100
  [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-16 16:50 +0100
    Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-02-16 17:50 +0100
      Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-18 00:10 +0100
        Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-18 00:30 +0100
          Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-18 11:30 +0100
            Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-18 21:00 +0100
              Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-19 16:10 +0100
                Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle period "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-20 00:50 +0100
                Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-23 10:50 +0100
    Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Shreyas B Prabhu <shreyas@linux.vnet.ibm.com> - 2016-02-22 16:10 +0100
      Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-22 18:30 +0100
        Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Shreyas B Prabhu <shreyas@linux.vnet.ibm.com> - 2016-02-23 11:10 +0100
    Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Shreyas B Prabhu <shreyas@linux.vnet.ibm.com> - 2016-02-23 11:10 +0100
      Re: [PATCH V3 2/2] sched: idle: IRQ based next prediction for idle  period Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-23 11:20 +0100
  Re: [PATCH V3 1/2] irq: Track the interrupt timings Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-02-16 17:50 +0100
  Re: [PATCH V3 1/2] irq: Track the interrupt timings Shreyas B Prabhu <shreyas@linux.vnet.ibm.com> - 2016-02-22 15:50 +0100
    Re: [PATCH V3 1/2] irq: Track the interrupt timings Daniel Lezcano <daniel.lezcano@linaro.org> - 2016-02-22 18:30 +0100

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