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cpufreq: Remove ->resolve_freq()

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Commit e3c0623608 ("cpufreq: add cpufreq_driver_resolve_freq()")
introduced this callback, back in 2016, for drivers that provide the
->target() callback.

The kernel hasn't seen a single user of it in the past 5 years and
it is not likely to be used any time soon.

Remove it for now.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2021-06-29 11:57:08 +05:30 committed by Rafael J. Wysocki
parent f9ccdec24d
commit b3beca7618
4 changed files with 9 additions and 28 deletions
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3
Documentation/cpu-freq/cpu-drivers.rst
View File

@ -58,9 +58,6 @@ And optionally
.driver_data - cpufreq driver specific data.
.resolve_freq - Returns the most appropriate frequency for a target
frequency. Doesn't change the frequency though.
.get_intermediate and target_intermediate - Used to switch to stable
frequency while changing CPU frequency.

2
Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
View File

@ -64,8 +64,6 @@ CPUfreq核心层注册一个cpufreq_driver结构体。
.driver_data - cpufreq驱动程序的特定数据。
.resolve_freq - 返回最适合目标频率的频率。不过并不能改变频率。
.get_intermediate 和 target_intermediate - 用于在改变CPU频率时切换到稳定
的频率。

23
drivers/cpufreq/cpufreq.c
View File

@ -527,22 +527,17 @@ EXPORT_SYMBOL_GPL(cpufreq_disable_fast_switch);
static unsigned int __resolve_freq(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
{
unsigned int idx;
target_freq = clamp_val(target_freq, policy->min, policy->max);
if (!cpufreq_driver->target_index)
return target_freq;
idx = cpufreq_frequency_table_target(policy, target_freq, relation);
policy->cached_resolved_idx = idx;
policy->cached_target_freq = target_freq;
if (cpufreq_driver->target_index) {
unsigned int idx;
idx = cpufreq_frequency_table_target(policy, target_freq,
relation);
policy->cached_resolved_idx = idx;
return policy->freq_table[idx].frequency;
}
if (cpufreq_driver->resolve_freq)
return cpufreq_driver->resolve_freq(policy, target_freq);
return target_freq;
return policy->freq_table[idx].frequency;
}
/**

9
include/linux/cpufreq.h
View File

@ -330,15 +330,6 @@ struct cpufreq_driver {
unsigned long target_perf,
unsigned long capacity);
/*
* Caches and returns the lowest driver-supported frequency greater than
* or equal to the target frequency, subject to any driver limitations.
* Does not set the frequency. Only to be implemented for drivers with
* target().
*/
unsigned int (*resolve_freq)(struct cpufreq_policy *policy,
unsigned int target_freq);
/*
* Only for drivers with target_index() and CPUFREQ_ASYNC_NOTIFICATION
* unset.