>
> Paul, could I summary your point here:
> keep current weighted_cpu_load, but add blocked load avg in
> get_rq_runnable_load?
>
> I will test this change.
Current testing(kbuild, oltp, aim7) don't show clear different on my NHM EP box
between the following and the origin patch,
the only different is get_rq_runnable_load added blocked_load_avg. in SMP
will test more cases and more box.
---
kernel/sched/fair.c | 5 +++--
kernel/sched/proc.c | 17 +++++++++++++++--
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 1e5a5e6..7d5c477 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2968,7 +2968,7 @@ 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 cpu_rq(cpu)->cfs.runnable_load_avg;
}
/*
@@ -3013,9 +3013,10 @@ static unsigned long cpu_avg_load_per_task(int cpu)
{
struct rq *rq = cpu_rq(cpu);
unsigned long nr_running = ACCESS_ONCE(rq->nr_running);
+ unsigned long load_avg = rq->cfs.runnable_load_avg;
if (nr_running)
- return rq->load.weight / nr_running;
+ return load_avg / nr_running;
return 0;
}
diff --git a/kernel/sched/proc.c b/kernel/sched/proc.c
index bb3a6a0..36d7db6 100644
--- a/kernel/sched/proc.c
+++ b/kernel/sched/proc.c
@@ -501,6 +501,18 @@ static void __update_cpu_load(struct rq *this_rq, unsigned
long this_load,
sched_avg_update(this_rq);
}
+#ifdef CONFIG_SMP
+unsigned long get_rq_runnable_load(struct rq *rq)
+{
+ return rq->cfs.runnable_load_avg + rq->cfs.blocked_load_avg;
+}
+#else
+unsigned long get_rq_runnable_load(struct rq *rq)
+{
+ return rq->load.weight;
+}
+#endif
+
#ifdef CONFIG_NO_HZ_COMMON
/*
* There is no sane way to deal with nohz on smp when using jiffies because the
@@ -522,7 +534,7 @@ 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);
- unsigned long load = this_rq->load.weight;
+ unsigned long load = get_rq_runnable_load(this_rq);
unsigned long pending_updates;
/*
@@ -568,11 +580,12 @@ void update_cpu_load_nohz(void)
*/
void update_cpu_load_active(struct rq *this_rq)
{
+ unsigned long load = get_rq_runnable_load(this_rq);
/*
* See the mess around update_idle_cpu_load() / update_cpu_load_nohz().
*/
this_rq->last_load_update_tick = jiffies;
- __update_cpu_load(this_rq, this_rq->load.weight, 1);
+ __update_cpu_load(this_rq, load, 1);
calc_load_account_active(this_rq);
}
--
1.7.12
--
Thanks
Alex
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