cpufreq: schedutil: Add iowait boosting

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Modify the schedutil cpufreq governor to boost the CPU
frequency if the SCHED_CPUFREQ_IOWAIT flag is passed to
it via cpufreq_update_util().

If that happens, the frequency is set to the maximum during
the first update after receiving the SCHED_CPUFREQ_IOWAIT flag
and then the boost is reduced by half during each following update.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Looks-good-to: Steve Muckle <smuckle@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

...

This commit is contained in:

Rafael J. Wysocki 2016-09-10 00:00:31 +02:00

parent 8c34ab1910

commit 21ca6d2c52

1 changed files with 49 additions and 4 deletions

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kernel/sched/cpufreq_schedutil.c

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