For power aware balancing, we care the sched domain/group's utilization.
So add: sd_lb_stats.sd_util and sg_lb_stats.group_util.
And want to know which group is busiest but still has capability to
handle more tasks, so add: sd_lb_stats.group_leader
Signed-off-by: Alex Shi <alex....@intel.com>
---
kernel/sched/fair.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index a165f52..dda6809 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4203,6 +4203,10 @@ struct sd_lb_stats {
unsigned int busiest_group_weight;
int group_imb; /* Is there imbalance in this sd */
+
+ /* Varibles of power awaring scheduling */
+ unsigned int sd_util; /* sum utilization of this domain */
+ struct sched_group *group_leader; /* Group which relieves group_min */
};
/*
@@ -4218,6 +4222,7 @@ struct sg_lb_stats {
unsigned long group_weight;
int group_imb; /* Is there an imbalance in the group ? */
int group_has_capacity; /* Is there extra capacity in the group? */
+ unsigned int group_util; /* sum utilization of group */
};
/**
--
1.7.12
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