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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-03 13:16:51 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-15 16:01:07 +0200 |
| commit | 78e7ed53c9f42f04f9401ada6f7047db60781676 (patch) | |
| tree | 24f45333ce4479b27c96b425c7d09c080a26609f /kernel/sched_fair.c | |
| parent | d7c33c4930f569caf6b2ece597432853c4151a45 (diff) | |
| download | linux-78e7ed53c9f42f04f9401ada6f7047db60781676.tar.gz linux-78e7ed53c9f42f04f9401ada6f7047db60781676.tar.bz2 linux-78e7ed53c9f42f04f9401ada6f7047db60781676.zip | |
sched: Tweak wake_idx
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>
Diffstat (limited to 'kernel/sched_fair.c')
| -rw-r--r-- | kernel/sched_fair.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 8b3eddbcf9a4..19593568031a 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -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; |