[PATCH RT 02/19] x86/mce: fix mce timer interval

[Steven Rostedt]

From: Mike Galbraith <bitbucket@xxxxxxxxx>

Seems mce timer fire at the wrong frequency in -rt kernels since roughly
forever due to 32 bit overflow.  3.8-rt is also missing a multiplier.

Add missing us -> ns conversion and 32 bit overflow prevention.

Cc: stable-rt@xxxxxxxxxxxxxxx
Signed-off-by: Mike Galbraith <bitbucket@xxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
[bigeasy: use ULL instead of u64 cast]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
 arch/x86/kernel/cpu/mcheck/mce.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index e31ea90..339bb4d0 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1649,7 +1649,7 @@ static void __mcheck_cpu_init_timer(void)
 	__this_cpu_write(mce_next_interval, iv);
 	if (!iv)
 		return;
-	hrtimer_start_range_ns(t, ns_to_ktime(jiffies_to_usecs(iv) * 1000),
+	hrtimer_start_range_ns(t, ns_to_ktime(jiffies_to_usecs(iv) * 1000ULL),
 			       0, HRTIMER_MODE_REL_PINNED);
 }
 
-- 
1.7.10.4


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