diff options
| author | Olav Haugan <ohaugan@codeaurora.org> | 2014-11-26 12:54:37 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:01:20 -0700 |
| commit | c7b587d9aa093de529b2fc6efd90b1f856a78bc7 (patch) | |
| tree | de8cfbefffe172d712536440754108a92a085604 /kernel | |
| parent | 5a48aeb06c504302abaec157664a6f3a6205b2cd (diff) | |
sched: Avoid migrating tasks to little cores due to EA
If during the check whether migration is needed we find that there is a
lower power CPU available we commence to find a new CPU for this task.
However, by the time we search for a new CPU the lower power CPU might
no longer be available. We should abort the attempt to migrate a task in
this case.
CRs-Fixed: 764788
Change-Id: I867923a82b95c599278b81cd73bb102b6aff4d03
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3204ca2a9619..f0d34f818428 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3174,6 +3174,10 @@ static int skip_cpu(struct task_struct *p, int cpu, int reason) skip = (rq->capacity >= task_rq->capacity); break; + case MOVE_TO_POWER_EFFICIENT_CPU: + skip = rq->capacity < task_rq->capacity || + power_cost(p, cpu) > power_cost(p, task_cpu(p)); + break; default: skip = (cpu == task_cpu(p)); break; |