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e3c1175d91
Implements cpufreq_scale_freq_capacity() to provide the scheduler with a frequency scaling correction factor for more accurate load-tracking. The factor is: current_freq(cpu) << SCHED_CAPACITY_SHIFT / max_freq(cpu) In fact, freq_scale should be a struct cpufreq_policy data member. But this would require that the scheduler hot path (__update_load_avg()) would have to grab the cpufreq lock. This can be avoided by using per-cpu data initialized to SCHED_CAPACITY_SCALE for freq_scale. Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> |
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