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ANDROID: sched/fair: Sync task util early in feec

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The vendor hook in find_energy_efficient_cpu() currently sees a
potentially stale task utilization. Make sure to sync it beforehand to
avoid any issues by moving the call at the top of the function. This
also ensures the check on task_fits_capacity() when the sync flag is set
sees an up-to-date task util.

Fixes: a9c5fcfe9c ("ANDROID: sched/fair: Have sync honor fits_capacity")
Fixes: 147a9b3d9e ("ANDROID: sched: Add vendor hooks for find_energy_efficient_cpu")
Signed-off-by: Quentin Perret <qperret@google.com>
Change-Id: Ie9a6c89249a2aefbccced4786ce4d4728e39dd12
This commit is contained in:
Quentin Perret
2021-01-07 09:15:08 +00:00
parent 6d961aa91d
commit eadbc20d0d
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/fair.c
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@@ -6602,6 +6602,7 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu, int sy
struct perf_domain *pd;
int new_cpu = INT_MAX;
sync_entity_load_avg(&p->se);
trace_android_rvh_find_energy_efficient_cpu(p, prev_cpu, sync, &new_cpu);
if (new_cpu != INT_MAX)
return new_cpu;
@@ -6629,7 +6630,6 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu, int sy
if (!sd)
goto fail;
sync_entity_load_avg(&p->se);
if (!task_util_est(p))
goto unlock;