forked from luck/tmp_suning_uos_patched
cpufreq: schedutil: fix equation in comment
scale_irq_capacity() call in schedutil_cpu_util() does util *= (max - irq) util /= max But the comment says util *= (1 - irq) util /= max Fix the comment to match what the scaling function does. Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Vincent Guittot <vincent.guittot@linaro.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net> Link: https://lkml.kernel.org/r/20190802104628.8410-1-qais.yousef@arm.com
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@ -259,9 +259,9 @@ unsigned long schedutil_cpu_util(int cpu, unsigned long util_cfs,
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* irq metric. Because IRQ/steal time is hidden from the task clock we
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* need to scale the task numbers:
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*
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* 1 - irq
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* U' = irq + ------- * U
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* max
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* max - irq
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* U' = irq + --------- * U
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* max
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*/
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util = scale_irq_capacity(util, irq, max);
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util += irq;
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