Messages in this thread Patch in this message | | | From | Alex Shi <> | Subject | [PATCH v3 09/22] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task | Date | Sat, 5 Jan 2013 16:37:38 +0800 |
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They are the base values in load balance, update them with rq runnable load average, then the load balance will consider runnable load avg naturally.
Signed-off-by: Alex Shi <alex.shi@intel.com> --- kernel/sched/core.c | 8 ++++++++ kernel/sched/fair.c | 4 ++-- 2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 06d27af..5feed5e 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2544,7 +2544,11 @@ static void __update_cpu_load(struct rq *this_rq, unsigned long this_load, void update_idle_cpu_load(struct rq *this_rq) { unsigned long curr_jiffies = ACCESS_ONCE(jiffies); +#if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) + unsigned long load = (unsigned long)this_rq->cfs.runnable_load_avg; +#else unsigned long load = this_rq->load.weight; +#endif unsigned long pending_updates; /* @@ -2594,7 +2598,11 @@ static void update_cpu_load_active(struct rq *this_rq) * See the mess around update_idle_cpu_load() / update_cpu_load_nohz(). */ this_rq->last_load_update_tick = jiffies; +#if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) + __update_cpu_load(this_rq, this_rq->cfs.runnable_load_avg, 1); +#else __update_cpu_load(this_rq, this_rq->load.weight, 1); +#endif calc_load_account_active(this_rq); } diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 5c545e4..84a6517 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2906,7 +2906,7 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags) /* Used instead of source_load when we know the type == 0 */ static unsigned long weighted_cpuload(const int cpu) { - return cpu_rq(cpu)->load.weight; + return (unsigned long)cpu_rq(cpu)->cfs.runnable_load_avg; } /* @@ -2953,7 +2953,7 @@ static unsigned long cpu_avg_load_per_task(int cpu) unsigned long nr_running = ACCESS_ONCE(rq->nr_running); if (nr_running) - return rq->load.weight / nr_running; + return (unsigned long)rq->cfs.runnable_load_avg / nr_running; return 0; } -- 1.7.12
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