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Implements the Max Frequency Capping Engine (MFCE) getter function topology_get_max_freq_scale() to provide the scheduler with a maximum frequency scaling correction factor for more accurate cpu capacity handling by being able to deal with max frequency capping. This scaling factor describes the influence of running a cpu with a current maximum frequency (policy) lower than the maximum possible frequency (cpuinfo). The factor is: policy_max_freq(cpu) << SCHED_CAPACITY_SHIFT / cpuinfo_max_freq(cpu) It also implements the MFCE setter function arch_set_max_freq_scale() which is called from cpufreq_set_policy(). Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> [Trivial cherry-pick issue in cpufreq.c] Signed-off-by: Quentin Perret <quentin.perret@arm.com> Change-Id: I59e52861ee260755ab0518fe1f7183a2e4e3d0fc |
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