diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2016-10-13 12:29:04 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-10-13 12:29:04 -0700 |
| commit | a6138ccde2a183256f80f670ad959c3b57f2558c (patch) | |
| tree | 92e0317629fd3bd3636b54952642fe3d9c88c220 /kernel | |
| parent | daa54e82ab1bdf72a99886bd479b625c36e21eb2 (diff) | |
| parent | 825b7ef93a28c91d41b370de543b111582de3982 (diff) | |
Merge "sched: bucketize CPU c-state levels"
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/hmp.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/sched/hmp.c b/kernel/sched/hmp.c index a0686ea29243..3d5de8ba70a2 100644 --- a/kernel/sched/hmp.c +++ b/kernel/sched/hmp.c @@ -24,6 +24,8 @@ #include <trace/events/sched.h> +#define CSTATE_LATENCY_GRANULARITY_SHIFT (6) + const char *task_event_names[] = {"PUT_PREV_TASK", "PICK_NEXT_TASK", "TASK_WAKE", "TASK_MIGRATE", "TASK_UPDATE", "IRQ_UPDATE"}; @@ -99,7 +101,10 @@ sched_set_cpu_cstate(int cpu, int cstate, int wakeup_energy, int wakeup_latency) rq->cstate = cstate; /* C1, C2 etc */ rq->wakeup_energy = wakeup_energy; - rq->wakeup_latency = wakeup_latency; + /* disregard small latency delta (64 us). */ + rq->wakeup_latency = ((wakeup_latency >> + CSTATE_LATENCY_GRANULARITY_SHIFT) << + CSTATE_LATENCY_GRANULARITY_SHIFT); } /* |