From: Ingo Molnar <mingo@elte.hu>
Date: Sat, 30 Dec 2006 00:47:14 +0000 (-0800)
Subject: [PATCH] rcu: rcutorture suspend fix
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=e4e6bdbb426d1ecd9e4587f22115f8d0d426d21f;p=deliverable%2Flinux.git

[PATCH] rcu: rcutorture suspend fix

Fix suspend hang: rcutorture threads need to be nofreeze.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index c52f981ea008..482b11ff65cb 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -522,6 +522,7 @@ rcu_torture_writer(void *arg)
 
 	VERBOSE_PRINTK_STRING("rcu_torture_writer task started");
 	set_user_nice(current, 19);
+	current->flags |= PF_NOFREEZE;
 
 	do {
 		schedule_timeout_uninterruptible(1);
@@ -561,6 +562,7 @@ rcu_torture_fakewriter(void *arg)
 
 	VERBOSE_PRINTK_STRING("rcu_torture_fakewriter task started");
 	set_user_nice(current, 19);
+	current->flags |= PF_NOFREEZE;
 
 	do {
 		schedule_timeout_uninterruptible(1 + rcu_random(&rand)%10);
@@ -591,6 +593,7 @@ rcu_torture_reader(void *arg)
 
 	VERBOSE_PRINTK_STRING("rcu_torture_reader task started");
 	set_user_nice(current, 19);
+	current->flags |= PF_NOFREEZE;
 
 	do {
 		idx = cur_ops->readlock();