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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2015-07-15 08:04:38 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-03 12:24:28 +0200 |
| commit | 6c1d47c0827304949e0eb9479f4d587f226fac8b (patch) | |
| tree | e56d3c53cc6af71b01507c7cc3335e53c88264d5 /kernel/sched | |
| parent | 9d89c257dfb9c51a532d69397f6eed75e5168c35 (diff) | |
| download | linux-6c1d47c0827304949e0eb9479f4d587f226fac8b.tar.gz linux-6c1d47c0827304949e0eb9479f4d587f226fac8b.tar.bz2 linux-6c1d47c0827304949e0eb9479f4d587f226fac8b.zip | |
sched/fair: Implement update_blocked_averages() for CONFIG_FAIR_GROUP_SCHED=n
The load and the utilization of idle CPUs must be updated periodically in
order to decay the blocked part.
If CONFIG_FAIR_GROUP_SCHED is not set, the load and util of idle cpus
are not decayed and stay at the values set before becoming idle.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
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
Link: http://lkml.kernel.org/r/1436918682-4971-4-git-send-email-yuyang.du@intel.com
[ Fixed up the SOB chain. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/fair.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 01ffa9509c23..e4b80c63633a 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5846,6 +5846,14 @@ static unsigned long task_h_load(struct task_struct *p) #else static inline void update_blocked_averages(int cpu) { + struct rq *rq = cpu_rq(cpu); + struct cfs_rq *cfs_rq = &rq->cfs; + unsigned long flags; + + raw_spin_lock_irqsave(&rq->lock, flags); + update_rq_clock(rq); + update_cfs_rq_load_avg(cfs_rq_clock_task(cfs_rq), cfs_rq); + raw_spin_unlock_irqrestore(&rq->lock, flags); } static unsigned long task_h_load(struct task_struct *p) |