Dietmar Eggemann 0e27c567d1
drivers base/arch_topology: provide frequency-invariant accounting support ...
Implements the arch-specific (arm and arm64) frequency-invariance setter
function arch_set_freq_scale() which provides the following frequency
scaling factor:
current_freq(cpu) << SCHED_CAPACITY_SHIFT / max_supported_freq(cpu)
One possible consumer of the frequency-invariance getter function
topology_get_freq_scale() is the Per-Entity Load Tracking (PELT)
mechanism of the task scheduler.
Allow inlining of topology_get_freq_scale() into the task scheduler
fast path (e.g. __update_load_avg_se()) by coding it as a static inline
function in the arch topology header file.
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com >
Acked-by: Viresh Kumar <viresh.kumar@linaro.org >
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com >
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