Re: [PATCH 1/3] cpufreq: Add a mechanism for registering utilization update callbacks

[Viresh Kumar]

On 29-01-16, 23:53, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> 
> 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@xxxxxxxxx>
> ---
>  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@xxxxxxxxxx>

-- 
viresh