diff options
Diffstat (limited to 'kernel/sched/hmp.c')
| -rw-r--r-- | kernel/sched/hmp.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/kernel/sched/hmp.c b/kernel/sched/hmp.c index df47c26ab6d2..0591975de3bf 100644 --- a/kernel/sched/hmp.c +++ b/kernel/sched/hmp.c @@ -4303,8 +4303,20 @@ void note_task_waking(struct task_struct *p, u64 wallclock) { u64 sleep_time = wallclock - p->last_switch_out_ts; - p->last_wake_ts = wallclock; + /* + * When a short burst and short sleeping task goes for a long + * sleep, the task's avg_sleep_time gets boosted. It will not + * come below short_sleep threshold for a lot of time and it + * results in incorrect packing. The idead behind tracking + * avg_sleep_time is to detect if a task is short sleeping + * or not. So limit the sleep time to twice the short sleep + * threshold. For regular long sleeping tasks, the avg_sleep_time + * would be higher than threshold, and packing happens correctly. + */ + sleep_time = min_t(u64, sleep_time, 2 * sysctl_sched_short_sleep); update_avg(&p->ravg.avg_sleep_time, sleep_time); + + p->last_wake_ts = wallclock; } #ifdef CONFIG_CGROUP_SCHED |