diff options
| author | Vincent Guittot <[email protected]> | 2023-12-11 11:48:50 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2023-12-23 15:52:34 +0100 |
| commit | 599457ba15403037b489fe536266a3d5f9efaed7 (patch) | |
| tree | 41c93eec91f6bc2d8a0432e80bd317db924f4f3e | |
| 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 <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Tested-by: Lukasz Luba <[email protected]>
Reviewed-by: Lukasz Luba <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 4 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 1 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 934d35f570b7..44db4f59c4cc 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -454,7 +454,7 @@ void cpufreq_freq_transition_end(struct cpufreq_policy *policy, arch_set_freq_scale(policy->related_cpus, policy->cur, - policy->cpuinfo.max_freq); + arch_scale_freq_ref(policy->cpu)); spin_lock(&policy->transition_lock); policy->transition_ongoing = false; @@ -2174,7 +2174,7 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy, policy->cur = freq; arch_set_freq_scale(policy->related_cpus, freq, - policy->cpuinfo.max_freq); + arch_scale_freq_ref(policy->cpu)); cpufreq_stats_record_transition(policy, freq); if (trace_cpu_frequency_enabled()) { 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; |