29 lines
874 B
Diff
29 lines
874 B
Diff
From 41be12eb080afe653314cba0264bb429a0b1ea64 Mon Sep 17 00:00:00 2001
|
|
From: Thomas Gleixner <tglx@linutronix.de>
|
|
Date: Fri, 4 Nov 2011 20:48:36 +0100
|
|
Subject: [PATCH 175/290] sched-clear-pf-thread-bound-on-fallback-rq.patch
|
|
|
|
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
|
---
|
|
kernel/sched.c | 7 ++++++-
|
|
1 file changed, 6 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/kernel/sched.c b/kernel/sched.c
|
|
index 24ebc15..ba3ddde 100644
|
|
--- a/kernel/sched.c
|
|
+++ b/kernel/sched.c
|
|
@@ -2566,7 +2566,12 @@ static int select_fallback_rq(int cpu, struct task_struct *p)
|
|
printk(KERN_INFO "process %d (%s) no longer affine to cpu%d\n",
|
|
task_pid_nr(p), p->comm, cpu);
|
|
}
|
|
-
|
|
+ /*
|
|
+ * Clear PF_THREAD_BOUND, otherwise we wreckage
|
|
+ * migrate_disable/enable. See optimization for
|
|
+ * PF_THREAD_BOUND tasks there.
|
|
+ */
|
|
+ p->flags &= ~PF_THREAD_BOUND;
|
|
return dest_cpu;
|
|
}
|
|
|