28 lines
813 B
Diff
28 lines
813 B
Diff
Subject: sched-clear-pf-thread-bound-on-fallback-rq.patch
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Fri, 04 Nov 2011 20:48:36 +0100
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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kernel/sched.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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Index: linux-3.2/kernel/sched.c
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===================================================================
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--- linux-3.2.orig/kernel/sched.c
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+++ linux-3.2/kernel/sched.c
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@@ -2570,7 +2570,12 @@ static int select_fallback_rq(int cpu, s
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printk(KERN_INFO "process %d (%s) no longer affine to cpu%d\n",
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task_pid_nr(p), p->comm, cpu);
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}
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-
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+ /*
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+ * Clear PF_THREAD_BOUND, otherwise we wreckage
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+ * migrate_disable/enable. See optimization for
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+ * PF_THREAD_BOUND tasks there.
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+ */
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+ p->flags &= ~PF_THREAD_BOUND;
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return dest_cpu;
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}
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