2012-10-21 03:15:40 +00:00
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From 917db200a7c2029460f2bb82401a5cfbdde652e0 Mon Sep 17 00:00:00 2001
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2011-11-20 00:01:55 +00:00
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From: Thomas Gleixner <tglx@linutronix.de>
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2012-05-12 14:20:55 +00:00
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Date: Fri, 4 Nov 2011 20:48:36 +0100
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2012-10-21 03:15:40 +00:00
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Subject: [PATCH 175/287] sched-clear-pf-thread-bound-on-fallback-rq.patch
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2011-11-20 00:01:55 +00:00
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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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2012-05-12 14:20:55 +00:00
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diff --git a/kernel/sched.c b/kernel/sched.c
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2012-10-20 06:00:02 +00:00
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index 24ebc15..ba3ddde 100644
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2012-05-12 14:20:55 +00:00
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--- a/kernel/sched.c
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+++ b/kernel/sched.c
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2012-08-14 05:46:25 +00:00
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@@ -2566,7 +2566,12 @@ static int select_fallback_rq(int cpu, struct task_struct *p)
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2011-11-20 00:01:55 +00:00
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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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