diff options
| -rw-r--r-- | include/linux/sched.h | 2 | ||||
| -rw-r--r-- | kernel/sched.c | 5 |
2 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index f5d4b9cae523..90f5cb645116 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -449,7 +449,7 @@ struct task_struct { unsigned long sleep_avg; long interactive_credit; - unsigned long long timestamp; + unsigned long long timestamp, last_ran; int activated; unsigned long policy; diff --git a/kernel/sched.c b/kernel/sched.c index 9b395e8d616d..b1643e495f1f 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -180,7 +180,8 @@ static unsigned int task_timeslice(task_t *p) else return SCALE_PRIO(DEF_TIMESLICE, p->static_prio); } -#define task_hot(p, now, sd) ((now) - (p)->timestamp < (sd)->cache_hot_time) +#define task_hot(p, now, sd) ((long long) ((now) - (p)->last_ran) \ + < (long long) (sd)->cache_hot_time) enum idle_type { @@ -2764,7 +2765,7 @@ switch_tasks: if (!(HIGH_CREDIT(prev) || LOW_CREDIT(prev))) prev->interactive_credit--; } - prev->timestamp = now; + prev->timestamp = prev->last_ran = now; sched_info_switch(prev, next); if (likely(prev != next)) { |