commit 11854247e2c851e7ff9ce138e501c6cffc5a4217
author Peter Zijlstra <peterz@infradead.org> Thu Jan 21 16:34:27 2010 +0100
committer Ingo Molnar <mingo@elte.hu> Thu Jan 28 06:59:51 2010 +0100
tree 281c12176055279558b31b4b059e32e59229f486
parent fabf318e5e4bda0aca2b0d617b191884fda62703

sched: Fix incorrect sanity check

We moved to migrate on wakeup, which means that sleeping tasks could
still be present on offline cpus. Amend the check to only test running
tasks.

Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 1c8ddd6..08e54e7 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -151,7 +151,7 @@
 
 	write_lock_irq(&tasklist_lock);
 	for_each_process(p) {
-		if (task_cpu(p) == cpu &&
+		if (task_cpu(p) == cpu && p->state == TASK_RUNNING &&
 		    (!cputime_eq(p->utime, cputime_zero) ||
 		     !cputime_eq(p->stime, cputime_zero)))
 			printk(KERN_WARNING "Task %s (pid = %d) is on cpu %d\