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platform_kernel-5.15
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ANDROID: sched: Add vendor hook for cpu_overutilized 

Currently, cpu_overutilized uses the threshold 80% of cpu capacity, Add
vendor hook so that vendor could define other values.

Bug: 176722431
Signed-off-by: Rick Yiu <rickyiu@google.com>
Change-Id: Ic10bd8ebb40f7321cfa10e33ac020e3347ca6550
(cherry picked from commit b199c6e8795791e008cfff6e214676857cd0651c)
Signed-off-by: J. Avila <elavila@google.com>
(cherry picked from commit f5998fbf2dbbcdda953018d95150b394b02b286b)
This commit is contained in:
Rick Yiu 2021-01-04 22:10:32 +08:00 committed by Will McVicker
parent 53237559ad
commit 87475cbbe1
3 changed files with 15 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -105,6 +105,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_energy_efficient_cpu);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_sugov_sched_attr);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_iowait);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_sugov_update);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpu_overutilized);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_sched_setaffinity);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_update_cpus_allowed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_set_skip_swapcache_flags);

8
include/trace/hooks/sched.h
View File

@ -120,17 +120,25 @@ DECLARE_RESTRICTED_HOOK(android_rvh_migrate_queued_task,
DECLARE_RESTRICTED_HOOK(android_rvh_find_energy_efficient_cpu,
TP_PROTO(struct task_struct *p, int prev_cpu, int sync, int *new_cpu),
TP_ARGS(p, prev_cpu, sync, new_cpu), 1);
struct sched_attr;
DECLARE_HOOK(android_vh_set_sugov_sched_attr,
TP_PROTO(struct sched_attr *attr),
TP_ARGS(attr));
DECLARE_RESTRICTED_HOOK(android_rvh_set_iowait,
TP_PROTO(struct task_struct *p, struct rq *rq, int *should_iowait_boost),
TP_ARGS(p, rq, should_iowait_boost), 1);
struct sugov_policy;
DECLARE_RESTRICTED_HOOK(android_rvh_set_sugov_update,
TP_PROTO(struct sugov_policy *sg_policy, unsigned int next_freq, bool *should_update),
TP_ARGS(sg_policy, next_freq, should_update), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_cpu_overutilized,
TP_PROTO(int cpu, int *overutilized),
TP_ARGS(cpu, overutilized), 1);
DECLARE_RESTRICTED_HOOK(android_rvh_sched_setaffinity,
TP_PROTO(struct task_struct *p, const struct cpumask *in_mask, int *retval),
TP_ARGS(p, in_mask, retval), 1);

6
kernel/sched/fair.c
View File

@ -5588,6 +5588,12 @@ static inline unsigned long cpu_util(int cpu);
static inline bool cpu_overutilized(int cpu)
{
int overutilized = -1;
trace_android_rvh_cpu_overutilized(cpu, &overutilized);
if (overutilized != -1)
return overutilized;
return !fits_capacity(cpu_util(cpu), capacity_of(cpu));
}