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Subject[RFC PATCH 13/16 v3] Intercept wakeup/fork/exec load balancing
Date
We intercept load balancing to contain the load and load balancing in
the consolidated CPUs according to our consolidating mechanism.

In wakeup/fork/exec load balaning, when to find the idlest sched_group,
we first try to find the consolidated group

Signed-off-by: Yuyang Du <yuyang.du@intel.com>
---
kernel/sched/fair.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index d40ec9e..1c9ac08 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4475,7 +4475,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
}

while (sd) {
- struct sched_group *group;
+ struct sched_group *group = NULL;
int weight;

if (!(sd->flags & sd_flag)) {
@@ -4483,7 +4483,12 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f
continue;
}

- group = find_idlest_group(sd, p, cpu, sd_flag);
+ if (sd->flags & SD_WORKLOAD_CONSOLIDATION)
+ group = wc_find_group(sd, p, cpu);
+
+ if (!group)
+ group = find_idlest_group(sd, p, cpu, sd_flag);
+
if (!group) {
sd = sd->child;
continue;
--
1.7.9.5


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