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sched/walt: Add small task filtering to uclamp

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Currently, small tasks get placed on mid-cap CPUs if uclamp is active
on them. This causes power numbers to increase.
Introduce filtering such that small tasks stay on silver.

Change-Id: I7e31d8a5ffd4c4f64d7bd3668970216550d23d24
Signed-off-by: Sai Harshini Nimmala <snimmala@codeaurora.org>
This commit is contained in:
Sai Harshini Nimmala 2021-04-22 22:59:35 -07:00 committed by Rishabh Bhatnagar
parent 4dfdcf521a
commit a822c7ebe1
2 changed files with 9 additions and 2 deletions
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9
kernel/sched/walt/walt.h
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@ -478,6 +478,13 @@ static inline enum sched_boost_policy task_boost_policy(struct task_struct *p)
return policy;
}
static inline bool walt_uclamp_boosted(struct task_struct *p)
{
struct walt_task_struct *wts = (struct walt_task_struct *) p->android_vendor_data1;
return uclamp_eff_value(p, UCLAMP_MIN) > 0 && wts->unfilter;
}
static inline unsigned long capacity_of(int cpu)
{
return cpu_rq(cpu)->cpu_capacity;
@ -702,7 +709,7 @@ static inline bool task_fits_max(struct task_struct *p, int cpu)
if (is_min_capacity_cpu(cpu)) {
if (task_boost_policy(p) == SCHED_BOOST_ON_BIG ||
task_boost > 0 ||
uclamp_boosted(p) ||
walt_uclamp_boosted(p) ||
walt_should_kick_upmigrate(p, cpu))
return false;
} else { /* mid cap cpu */

2
kernel/sched/walt/walt_cfs.c
View File

@ -514,7 +514,7 @@ int walt_find_energy_efficient_cpu(struct task_struct *p, int prev_cpu,
u64 start_t = 0;
int delta = 0;
int task_boost = per_task_boost(p);
bool uclamp_boost = uclamp_boosted(p);
bool uclamp_boost = walt_uclamp_boosted(p);
int start_cpu, order_index, end_index;
if (walt_is_many_wakeup(sibling_count_hint) && prev_cpu != cpu &&