Make decisions based on PJT's metrics and the dependent metrics
about which tasks to move to reduce the imbalance.
Signed-off-by: Preeti U Murthy <pre...@linux.vnet.ibm.com>
---
kernel/sched/fair.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bb1c71b..bd7b69d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3957,7 +3957,7 @@ static int move_tasks(struct lb_env *env)
unsigned long load;
int pulled = 0;
- if (env->imbalance <= 0)
+ if (env->load_imbalance <= 0)
return 0;
again:
@@ -3984,7 +3984,8 @@ again:
if (sched_feat(LB_MIN) && load < 16 &&
!env->sd->nr_balance_failed)
goto next;
- if ((load / 2) > env->imbalance)
+ /* The below being changed to use the PJT's metric */
+ if ((load / 2) > env->load_imbalance)
goto next;
if (!can_migrate_task(p, env))
@@ -3992,7 +3993,8 @@ again:
move_task(p, env);
pulled++;
- env->imbalance -= load;
+ /* Using PJT's metric */
+ env->load_imbalance -= load;
#ifdef CONFIG_PREEMPT
/*
@@ -4007,8 +4009,9 @@ again:
/*
* We only want to steal up to the prescribed amount of
* weighted load.
+ * But the below modification is to use PJT's metric
*/
- if (env->imbalance <= 0)
+ if (env->load_imbalance <= 0)
goto out;
continue;
@@ -4145,7 +4148,8 @@ static inline void update_h_load(long cpu)
static unsigned long task_h_load(struct task_struct *p)
{
- return p->se.load.weight;
+ /* The below is changed to use PJT's metric*/
+ return p->se.avg.load_avg_contrib;
}
#endif
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