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| author | Jie Zhan <zhanjie9@hisilicon.com> | 2023-08-22 14:48:37 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-08-29 20:51:40 +0200 |
| commit | 218a06a79d9a98a96ef46bb003d4d8adb0962056 (patch) | |
| tree | 6d34e8f05314f5219d8cadd1ffb706b085b79843 /include | |
| parent | cpufreq: pcc: Fix the potentinal scheduling delays in target_index() (diff) | |
| download | linux-218a06a79d9a98a96ef46bb003d4d8adb0962056.tar.xz linux-218a06a79d9a98a96ef46bb003d4d8adb0962056.zip | |
cpufreq: Support per-policy performance boost
The boost control currently applies to the whole system. However, users
may prefer to boost a subset of cores in order to provide prioritized
performance to workloads running on the boosted cores.
Enable per-policy boost by adding a 'boost' sysfs interface under each
policy path. This can be found at:
/sys/devices/system/cpu/cpufreq/policy<*>/boost
Same to the global boost switch, writing 1/0 to the per-policy 'boost'
enables/disables boost on a cpufreq policy respectively.
The user view of global and per-policy boost controls should be:
1. Enabling global boost initially enables boost on all policies, and
per-policy boost can then be enabled or disabled individually, given that
the platform does support so.
2. Disabling global boost makes the per-policy boost interface illegal.
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Reviewed-by: Wei Xu <xuwei5@hisilicon.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpufreq.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 43b363a99215..71d186d6933a 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -141,6 +141,9 @@ struct cpufreq_policy { */ bool dvfs_possible_from_any_cpu; + /* Per policy boost enabled flag. */ + bool boost_enabled; + /* Cached frequency lookup from cpufreq_driver_resolve_freq. */ unsigned int cached_target_freq; unsigned int cached_resolved_idx; |