um: fix global timer issue when using CONFIG_NO_HZ
Richard Weinberger [Tue, 26 Oct 2010 21:21:13 +0000 (14:21 -0700)]
This fixes a issue which was introduced by fe2cc53e ("uml: track and make
up lost ticks").

timeval_to_ns() returns long long and not int.  Due to that UML's timer
did not work properlt and caused timer freezes.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/os-Linux/time.c

index dec5678..6e3359d 100644 (file)
@@ -60,7 +60,7 @@ static inline long long timeval_to_ns(const struct timeval *tv)
 long long disable_timer(void)
 {
        struct itimerval time = ((struct itimerval) { { 0, 0 }, { 0, 0 } });
-       int remain, max = UM_NSEC_PER_SEC / UM_HZ;
+       long long remain, max = UM_NSEC_PER_SEC / UM_HZ;
 
        if (setitimer(ITIMER_VIRTUAL, &time, &time) < 0)
                printk(UM_KERN_ERR "disable_timer - setitimer failed, "