github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 08:33:17 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

cpufreq: Introduce policy->boost_supported flag

Browse Source 
It is possible to have a scenario where not all cpufreq policies support
boost frequencies. And letting sysfs (or other parts of the kernel)
enable boost feature for that policy isn't correct.

Add a new flag, boost_supported, which will be set to true by the
cpufreq core only if the freq table contains valid boost frequencies.

Some cpufreq drivers though don't have boost frequencies in the
freq-table, they can set this flag from their ->init() callbacks.

Once all the drivers are updated to set the flag correctly, we can check
it before enabling boost feature for a policy.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Viresh Kumar 2025-01-23 11:04:25 +05:30
parent 9a23eb8b2b
commit 1f7d1bab50
2 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/cpufreq/freq_table.c
View File

@ -359,6 +359,10 @@ int cpufreq_table_validate_and_sort(struct cpufreq_policy *policy)
if (ret)
return ret;
/* Driver's may have set this field already */
if (policy_has_boost_freq(policy))
policy->boost_supported = true;
return set_freq_table_sorted(policy);
}

3
include/linux/cpufreq.h
View File

@ -144,6 +144,9 @@ struct cpufreq_policy {
/* Per policy boost enabled flag. */
bool boost_enabled;
/* Per policy boost supported flag. */
bool boost_supported;
/* Cached frequency lookup from cpufreq_driver_resolve_freq. */
unsigned int cached_target_freq;
unsigned int cached_resolved_idx;