github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-31 03:27:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

sched/walt: skip energy for uninvolved cluster

Browse Source 
A cluster that does not host prev cpu and or any of the candidates
doesn't affect the energy values. Don't calculate their contributions.

Change-Id: Id1b890dbf157fa27d90287202f7916c6ab102bba
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
This commit is contained in:
Abhijeet Dharmapurikar 2021-05-04 22:23:22 -07:00 committed by Rishabh Bhatnagar
parent 71a5697adb
commit 31be7e0e1e
1 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
kernel/sched/walt/walt_cfs.c
View File

@ -548,12 +548,18 @@ walt_pd_compute_energy(struct task_struct *p, int dst_cpu, struct perf_domain *p
}
static inline long
walt_compute_energy(struct task_struct *p, int dst_cpu, struct perf_domain *pd)
walt_compute_energy(struct task_struct *p, int dst_cpu, struct perf_domain *pd,
cpumask_t *candidates)
{
long energy = 0;
for (; pd; pd = pd->next)
energy += walt_pd_compute_energy(p, dst_cpu, pd);
for (; pd; pd = pd->next) {
struct cpumask *pd_mask = perf_domain_span(pd);
if (cpumask_intersects(candidates, pd_mask)
|| cpumask_test_cpu(task_cpu(p), pd_mask))
energy += walt_pd_compute_energy(p, dst_cpu, pd);
}
return energy;
}
@ -693,7 +699,7 @@ int walt_find_energy_efficient_cpu(struct task_struct *p, int prev_cpu,
if (cpumask_test_cpu(prev_cpu, &p->cpus_mask) && !__cpu_overutilized(prev_cpu, delta))
prev_energy = best_energy =
walt_compute_energy(p, prev_cpu, pd);
walt_compute_energy(p, prev_cpu, pd, candidates);
else
prev_energy = best_energy = ULONG_MAX;
@ -702,7 +708,7 @@ int walt_find_energy_efficient_cpu(struct task_struct *p, int prev_cpu,
if (cpu == prev_cpu)
continue;
cur_energy = walt_compute_energy(p, cpu, pd);
cur_energy = walt_compute_energy(p, cpu, pd, candidates);
trace_sched_compute_energy(p, cpu, cur_energy,
prev_energy, best_energy, best_energy_cpu);