• Rafael J. Wysocki's avatar
    cpufreq: Call cpufreq_disable_fast_switch() in sugov_exit() · 6c9d9c81
    Rafael J. Wysocki authored
    Due to differences in the cpufreq core's handling of runtime CPU
    offline and nonboot CPUs disabling during system suspend-to-RAM,
    fast frequency switching gets disabled after a suspend-to-RAM and
    resume cycle on all of the nonboot CPUs.
    
    To prevent that from happening, move the invocation of
    cpufreq_disable_fast_switch() from cpufreq_exit_governor() to
    sugov_exit(), as the schedutil governor is the only user of fast
    frequency switching today anyway.
    
    That simply prevents cpufreq_disable_fast_switch() from being called
    without invoking the ->governor callback for the CPUFREQ_GOV_POLICY_EXIT
    event (which happens during system suspend now).
    
    Fixes: b7898fda (cpufreq: Support for fast frequency switching)
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
    6c9d9c81
cpufreq_schedutil.c 13.3 KB