Messages in this thread Patch in this message | | | From | Alex Shi <> | Subject | [patch v5 07/15] sched: add new sg/sd_lb_stats fields for incoming fork/exec/wake balancing | Date | Mon, 18 Feb 2013 13:07:34 +0800 |
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For power aware balancing, we care the sched domain/group's utilizations more than their load weight. So add: sd_lb_stats.sd_utils and sg_lb_stats.group_utils.
We want to know the sd capacity, so add: sd_lb_stats.sd_capacity.
And want to know which group is busiest but still has free time to handle more tasks, so add: sd_lb_stats.group_leader.
Signed-off-by: Alex Shi <alex.shi@intel.com> --- kernel/sched/fair.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index b9a34ab..32b8a7b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4214,6 +4214,11 @@ 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_utils; /* sum utilizations of this domain */ + unsigned long sd_capacity; /* capacity of this domain */ + struct sched_group *group_leader; /* Group which relieves group_min */ }; /* @@ -4229,6 +4234,7 @@ 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_utils; /* sum utilizations of group */ }; /** -- 1.7.12
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