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sched: Tweak wake_idx

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When merging select_task_rq_fair() and sched_balance_self() we lost
the use of wake_idx, restore that and set them to 0 to make wake
balancing more aggressive.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2009-09-03 13:16:51 +02:00
committed by Ingo Molnar
parent d7c33c4930
commit 78e7ed53c9
7 changed files with 28 additions and 11 deletions
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21
kernel/sched_fair.c
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@@ -1232,12 +1232,27 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
* domain.
*/
static struct sched_group *
find_idlest_group(struct sched_domain *sd, struct task_struct *p, int this_cpu)
find_idlest_group(struct sched_domain *sd, struct task_struct *p,
int this_cpu, int flag)
{
struct sched_group *idlest = NULL, *this = NULL, *group = sd->groups;
unsigned long min_load = ULONG_MAX, this_load = 0;
int load_idx = sd->forkexec_idx;
int imbalance = 100 + (sd->imbalance_pct-100)/2;
int load_idx = 0;
switch (flag) {
case SD_BALANCE_FORK:
case SD_BALANCE_EXEC:
load_idx = sd->forkexec_idx;
break;
case SD_BALANCE_WAKE:
load_idx = sd->wake_idx;
break;
default:
break;
}
do {
unsigned long load, avg_load;
@@ -1392,7 +1407,7 @@ static int select_task_rq_fair(struct task_struct *p, int flag, int sync)
continue;
}
group = find_idlest_group(sd, p, cpu);
group = find_idlest_group(sd, p, cpu, flag);
if (!group) {
sd = sd->child;
continue;