From 5e8d42a7613c6bd59446820907320b6ab48b7df0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner 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 --- 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; }