[PATCH] Add try_to_freeze() to rt-test kthreads

When CONFIG_RT_MUTEX_TESTER is enabled kernel refuses to suspend the
machine because it's unable to freeze the rt-test-* threads.

Add try_to_freeze() after schedule() so that the threads will be freezed
correctly; I've tested the patch and it lets the notebook suspends and
resumes nicely.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c
index 494dac872a135823f42a6dec51a8dea301e05f17..948bd8f643e25a0c21c88134a61276eed74325c5 100644 (file)
--- a/kernel/rtmutex-tester.c
+++ b/kernel/rtmutex-tester.c
@@ -275,6 +275,7 @@ static int test_func(void *data)
 
                /* Wait for the next command to be executed */
                schedule();
+               try_to_freeze();
 
                if (signal_pending(current))
                        flush_signals(current);