A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 02:32:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

ANDROID: cpufreq/schedutil: Select frequency using util_avg for RT

Browse source 
Schedutil always requests max frequency whenever a RT task is running.
Now that we have a better estimate of the utilization of RT runqueues,
it is possible to make a less conservative decision and scale frequency
according to the needs of the RT tasks.

To do so, protect the RT-go-to-max code with a new sched_feature.
The sched_feature is disabled by default, hence favoring energy savings
as required in mobile environments.

Signed-off-by: Quentin Perret <[email protected]>
Change-Id: Ic9f01c8703d4f843addaa0d684012a422fe9f3b8
Git-commit: c74d264106b150fad8949a985514d127c1e117c5
Git-repo: https://android.googlesource.com/kernel/common/
[[email protected]: fix trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <[email protected]>
This commit is contained in:
Quentin Perret 2018-07-10 15:44:09 +01:00 • committed by Satya Durga Srinivasu Prabhala
commit 9e864eaf88
2 changed files with 6 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
kernel/sched/cpufreq_schedutil.c
View file

@ -307,7 +307,7 @@ unsigned long schedutil_cpu_util(int cpu, unsigned long util_cfs,
unsigned long dl_util, util, irq;
struct rq *rq = cpu_rq(cpu);
if (!IS_BUILTIN(CONFIG_UCLAMP_TASK) &&
if (!IS_BUILTIN(CONFIG_UCLAMP_TASK) && sched_feat(SUGOV_RT_MAX_FREQ) &&
type == FREQUENCY_UTIL && rt_rq_is_runnable(&rq->rt)) {
return max;
}

5
kernel/sched/features.h
View file

@ -94,3 +94,8 @@ SCHED_FEAT(UTIL_EST, true)
* Fast pre-selection of CPU candidates for EAS.
*/
SCHED_FEAT(FIND_BEST_TARGET, true)
/*
* Request max frequency from schedutil whenever a RT task is running.
*/
SCHED_FEAT(SUGOV_RT_MAX_FREQ, false)