• Daniel Lezcano's avatar
    powercap / idle_inject: Add an idle injection framework · 88763a5c
    Daniel Lezcano authored
    Initially, the cpu_cooling device for ARM was changed by adding a new
    policy inserting idle cycles. The intel_powerclamp driver does a
    similar action.
    
    Instead of implementing idle injections privately in the cpu_cooling
    device, move the idle injection code in a dedicated framework and give
    the opportunity to other frameworks to make use of it.
    
    The framework relies on the smpboot kthreads which handles via its
    main loop the common code for hotplugging and [un]parking.
    
    This code was previously tested with the cpu cooling device and went
    through several iterations. It results now in split code and API
    exported in the header file. It was tested with the cpu cooling device
    with success.
    Signed-off-by: 's avatarDaniel Lezcano <daniel.lezcano@linaro.org>
    Reviewed-by: 's avatarViresh Kumar <viresh.kumar@linaro.org>
    [ rjw: Rewrite of all comments ]
    Signed-off-by: 's avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    88763a5c
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