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 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 63c96f9..ab47f31 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1274,7 +1274,7 @@ static enum hrtimer_restart mce_start_timer(struct hrtimer *timer) *n = min(*n*2, round_jiffies_relative(check_interval*HZ)); hrtimer_forward(timer, timer->base->get_time(), - ns_to_ktime(jiffies_to_usecs(*n) * 1000)); + ns_to_ktime(jiffies_to_usecs(*n) * 1000ULL)); return HRTIMER_RESTART; } @@ -1568,7 +1568,7 @@ static void __mcheck_cpu_init_timer(void) if (!*n) return; - hrtimer_start_range_ns(t, ns_to_ktime(jiffies_to_usecs(*n) * 1000), + hrtimer_start_range_ns(t, ns_to_ktime(jiffies_to_usecs(*n) * 1000ULL), 0 , HRTIMER_MODE_REL_PINNED); } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe stable-rt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
