On 12/12/2012 11:57 AM, Preeti U Murthy wrote:
> Hi Alex,
> On 12/10/2012 01:52 PM, Alex Shi wrote:
>> 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.
>>
updated with UP config fix:
==========
>From d271c93b40411660dd0e54d99946367c87002cc8 Mon Sep 17 00:00:00 2001
From: Alex Shi <alex....@intel.com>
Date: Sat, 17 Nov 2012 13:56:11 +0800
Subject: [PATCH 07/18] sched: compute runnable load avg in cpu_load and
cpu_avg_load_per_task
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....@intel.com>
---
kernel/sched/core.c | 8 ++++++--
kernel/sched/fair.c | 4 ++--
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 96fa5f1..d306a84 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2487,7 +2487,7 @@ 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 = (unsigned long)this_rq->cfs.runnable_load_avg;
unsigned long pending_updates;
/*
@@ -2537,8 +2537,12 @@ 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;
- __update_cpu_load(this_rq, this_rq->load.weight, 1);
+#ifdef CONFIG_SMP
+ __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 61c8d24..9ca917c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2680,7 +2680,7 @@ 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;
}
/*
@@ -2727,7 +2727,7 @@ 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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