[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 c52f981ea0086e569b37c5195cf291c6be55d446..482b11ff65cb9916df94fb5399bd00d908ea5428 100644 (file)
--- 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();