From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 11 Sep 2009 10:45:38 +0000 (+0200)
Subject: sched: Fix task affinity for select_task_rq_fair
X-Git-Tag: v2.6.32-rc1~652^2~25
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d7c33c4930f569caf6b2ece597432853c4151a45;p=~shefty%2Frdma-dev.git

sched: Fix task affinity for select_task_rq_fair

While merging select_task_rq_fair() and sched_balance_self() I made
a mistake that leads to testing the wrong task affinty.

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

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 43dc6d1d9e8..8b3eddbcf9a 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1318,7 +1318,6 @@ find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu)
  */
 static int select_task_rq_fair(struct task_struct *p, int flag, int sync)
 {
-	struct task_struct *t = current;
 	struct sched_domain *tmp, *sd = NULL;
 	int cpu = smp_processor_id();
 	int prev_cpu = task_cpu(p);
@@ -1393,13 +1392,13 @@ static int select_task_rq_fair(struct task_struct *p, int flag, int sync)
 			continue;
 		}
 
-		group = find_idlest_group(sd, t, cpu);
+		group = find_idlest_group(sd, p, cpu);
 		if (!group) {
 			sd = sd->child;
 			continue;
 		}
 
-		new_cpu = find_idlest_cpu(group, t, cpu);
+		new_cpu = find_idlest_cpu(group, p, cpu);
 		if (new_cpu == -1 || new_cpu == cpu) {
 			/* Now try balancing at a lower domain level of cpu */
 			sd = sd->child;