diff options
| author | Vincent Guittot | 2023-12-11 11:48:50 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2023-12-23 15:52:34 +0100 |
| commit | 599457ba15403037b489fe536266a3d5f9efaed7 (patch) | |
| tree | 41c93eec91f6bc2d8a0432e80bd317db924f4f3e /include | |
| parent | 9942cb22ea458c34fa17b73d143ea32d4df1caca (diff) | |
cpufreq: Use the fixed and coherent frequency for scaling capacity
cpuinfo.max_freq can change at runtime because of boost as an example. This
implies that the value could be different from the frequency that has been
used to compute the capacity of a CPU.
The new arch_scale_freq_ref() returns a fixed and coherent frequency
that can be used to compute the capacity for a given frequency.
[ Also fix a arch_set_freq_scale() newline style wart in <linux/cpufreq.h>. ]
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20231211104855.558096-3-vincent.guittot@linaro.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpufreq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 1c5ca92a0555..afda5f24d3dd 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -1203,6 +1203,7 @@ void arch_set_freq_scale(const struct cpumask *cpus, { } #endif + /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; extern struct freq_attr cpufreq_freq_attr_scaling_boost_freqs; |