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Subject[34-longterm 034/209] um: fix global timer issue when using CONFIG_NO_HZ
Date
From: Richard Weinberger <richard@nod.at>

=====================================================================
| This is a commit scheduled for the next v2.6.34 longterm release. |
| If you see a problem with using this for longterm, please comment.|
=====================================================================

commit 482db6df1746c4fa7d64a2441d4cb2610249c679 upstream.

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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
arch/um/os-Linux/time.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index dec5678..6e3359d 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -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, "
--
1.7.4.4


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