[PATCH 0/3] cpufreq: schedutil: Fix 4.12 regressions

From: Viresh Kumar
Date: Fri Jun 09 2017 - 06:16:11 EST


Hi Rafael,

I have identified some regressions with the schedutil governor which
happen due to one of your patches that got merged in 4.12-rc1.

This series fixes all the drivers which provide a ->target_index()
callback but doesn't fix the drivers which provide ->target() callback.

Such platforms need to implement the ->resolve_freq() callback in order
to get this fixed and I only had hardware for testing intel_pstate,
which I fixed in this series.

I am wondering if there is another way to fix this issue (than what I
tried) or if we should revert the offending commit (39b64aa1c007) and
look for other solutions.

Anyway, this series has the necessary patches to fix it.

Viresh Kumar (3):
cpufreq: schedutil: Restore cached_raw_freq behavior
cpufreq: schedutil: Fix selection algorithm while reducing frequency
cpufreq: intel_pstate: Provide resolve_freq() to fix regression

drivers/cpufreq/intel_pstate.c | 14 +++++++++++++
kernel/sched/cpufreq_schedutil.c | 45 +++++++++++++++++++++++++++++++++-------
2 files changed, 52 insertions(+), 7 deletions(-)

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2.13.0.70.g6367777092d9