[RFC tg_shares_up improvements - v1 08/12] sched: update shares on idle_balance

pjt
2010-10-16T04:53:44Z

[-- Attachment #1: sched-tg-update_shares_on_idle_balance.patch --]
[-- Type: text/plain, Size: 675 bytes --]

Since shares updates are no longer expensive and effectively local, update them
at idle_balance(). This allows us to more quickly redistribute shares to
another cpu when our load becomes idle.

Signed-off-by: Paul Turner <pjt@google.com>

---
kernel/sched_fair.c | 1 +
1 file changed, 1 insertion(+)

Index: kernel/sched_fair.c
===================================================================
--- kernel/sched_fair.c.orig
+++ kernel/sched_fair.c
@@ -3301,6 +3301,7 @@ static void idle_balance(int this_cpu, s
*/
raw_spin_unlock(&this_rq->lock);

+ update_shares(this_cpu);
for_each_domain(this_cpu, sd) {
unsigned long interval;
int balance = 1;

--