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| author | Yuyang Du <yuyang.du@intel.com> | 2015-07-15 08:04:39 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-03 12:24:29 +0200 |
| commit | 540247fb5ddf6d2364f90387fa1f8f428d15e683 (patch) | |
| tree | d47f5d7124e40d51b7eab2175d1b2ea4bd6f4b9b /kernel/sched | |
| parent | 6c1d47c0827304949e0eb9479f4d587f226fac8b (diff) | |
| download | op-kernel-dev-540247fb5ddf6d2364f90387fa1f8f428d15e683.zip op-kernel-dev-540247fb5ddf6d2364f90387fa1f8f428d15e683.tar.gz | |
sched/fair: Init cfs_rq's sched_entity load average
The runnable load and utilization averages of cfs_rq's sched_entity
were not initiated. Like done to a task, give new cfs_rq' sched_entity
start values to heavy its load in infant time.
Signed-off-by: Yuyang Du <yuyang.du@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arjan@linux.intel.com
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: fengguang.wu@intel.com
Cc: len.brown@intel.com
Cc: morten.rasmussen@arm.com
Cc: pjt@google.com
Cc: rafael.j.wysocki@intel.com
Cc: umgwanakikbuti@gmail.com
Cc: vincent.guittot@linaro.org
Link: http://lkml.kernel.org/r/1436918682-4971-5-git-send-email-yuyang.du@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 2 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 11 | ||||
| -rw-r--r-- | kernel/sched/sched.h | 2 |
3 files changed, 8 insertions, 7 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3981526..5ca9ae0 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2304,7 +2304,7 @@ void wake_up_new_task(struct task_struct *p) #endif /* Initialize new task's runnable average */ - init_task_runnable_average(p); + init_entity_runnable_average(&p->se); rq = __task_rq_lock(p); activate_task(rq, p, 0); p->on_rq = TASK_ON_RQ_QUEUED; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e4b80c6..f636db0 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -667,10 +667,10 @@ static unsigned long task_h_load(struct task_struct *p); #define LOAD_AVG_MAX 47742 /* maximum possible load avg */ #define LOAD_AVG_MAX_N 345 /* number of full periods to produce LOAD_MAX_AVG */ -/* Give new task start runnable values to heavy its load in infant time */ -void init_task_runnable_average(struct task_struct *p) +/* Give new sched_entity start runnable values to heavy its load in infant time */ +void init_entity_runnable_average(struct sched_entity *se) { - struct sched_avg *sa = &p->se.avg; + struct sched_avg *sa = &se->avg; sa->last_update_time = 0; /* @@ -679,14 +679,14 @@ void init_task_runnable_average(struct task_struct *p) * will definitely be update (after enqueue). */ sa->period_contrib = 1023; - sa->load_avg = scale_load_down(p->se.load.weight); + sa->load_avg = scale_load_down(se->load.weight); sa->load_sum = sa->load_avg * LOAD_AVG_MAX; sa->util_avg = scale_load_down(SCHED_LOAD_SCALE); sa->util_sum = LOAD_AVG_MAX; /* when this task enqueue'ed, it will contribute to its cfs_rq's load_avg */ } #else -void init_task_runnable_average(struct task_struct *p) +void init_entity_runnable_average(struct sched_entity *se) { } #endif @@ -8029,6 +8029,7 @@ int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) init_cfs_rq(cfs_rq); init_tg_cfs_entry(tg, cfs_rq, se, i, parent->se[i]); + init_entity_runnable_average(se); } return 1; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index dcde941..4d139e0 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1307,7 +1307,7 @@ extern void init_dl_task_timer(struct sched_dl_entity *dl_se); unsigned long to_ratio(u64 period, u64 runtime); -extern void init_task_runnable_average(struct task_struct *p); +extern void init_entity_runnable_average(struct sched_entity *se); static inline void add_nr_running(struct rq *rq, unsigned count) { |
