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    SubjectRe: [PATCH 1/3] cpufreq: Add a mechanism for registering utilization update callbacks
    On 29-01-16, 23:53, Rafael J. Wysocki wrote:
    > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    >
    > Introduce a mechanism by which parts of the cpufreq subsystem
    > ("setpolicy" drivers or the core) can register callbacks to be
    > executed from cpufreq_update_util() which is invoked by the
    > scheduler's update_load_avg() on CPU utilization changes.
    >
    > This allows the "setpolicy" drivers to dispense with their timers
    > and do all of the computations they need and frequency/voltage
    > adjustments in the update_load_avg() code path, among other things.
    >
    > The scheduler changes were suggested by Peter Zijlstra.
    >
    > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    > ---
    > drivers/cpufreq/cpufreq.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
    > include/linux/cpufreq.h | 7 +++++++
    > include/linux/sched.h | 2 ++
    > kernel/sched/fair.c | 29 ++++++++++++++++++++++++++++-
    > 4 files changed, 81 insertions(+), 1 deletion(-)

    Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

    --
    viresh

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