sched: Clean up the load_idx selection in select_task_rq_fair

Clean up the code a little.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 19 deletions

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 722d392b0dac..aeff40e7ec1b 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1248,26 +1248,11 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
  */
 static struct sched_group *
 find_idlest_group(struct sched_domain *sd, struct task_struct *p,
-                  int this_cpu, int flag)
+                  int this_cpu, int load_idx)
 {
         struct sched_group *idlest = NULL, *this = NULL, *group = sd->groups;
         unsigned long min_load = ULONG_MAX, this_load = 0;
         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;
@@ -1346,14 +1331,14 @@ find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu)
  *
  * preempt must be disabled.
  */
-static int select_task_rq_fair(struct task_struct *p, int sd_flag, int flags)
+static int select_task_rq_fair(struct task_struct *p, int sd_flag, int wake_flags)
 {
         struct sched_domain *tmp, *shares = NULL, *sd = NULL;
         int cpu = smp_processor_id();
         int prev_cpu = task_cpu(p);
         int new_cpu = cpu;
         int want_affine = 0;
-        int sync = flags & WF_SYNC;
+        int sync = wake_flags & WF_SYNC;
 
         if (sd_flag & SD_BALANCE_WAKE) {
                 if (sched_feat(AFFINE_WAKEUPS))
@@ -1413,6 +1398,7 @@ static int select_task_rq_fair(struct task_struct *p, int sd_flag, int flags)
                 update_shares(sd);
 
         while (sd) {
+                int load_idx = sd->forkexec_idx;
                 struct sched_group *group;
                 int weight;
 
@@ -1421,7 +1407,10 @@ static int select_task_rq_fair(struct task_struct *p, int sd_flag, int flags)
                         continue;
                 }
 
-                group = find_idlest_group(sd, p, cpu, sd_flag);
+                if (sd_flag & SD_BALANCE_WAKE)
+                        load_idx = sd->wake_idx;
+
+                group = find_idlest_group(sd, p, cpu, load_idx);
                 if (!group) {
                         sd = sd->child;
                         continue;