From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: [PATCH RT 02/19] x86/mce: fix mce timer interval Date: Sun, 08 Sep 2013 11:13:57 -0400 Message-ID: <20130908151445.962814337@goodmis.org> References: <20130908151355.362583092@goodmis.org> Cc: Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , , Mike Galbraith To: linux-kernel@vger.kernel.org, linux-rt-users Return-path: Content-Disposition: inline; filename=0002-x86-mce-fix-mce-timer-interval.patch Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org From: Mike Galbraith 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@vger.kernel.org Signed-off-by: Mike Galbraith Signed-off-by: Steven Rostedt [bigeasy: use ULL instead of u64 cast] Signed-off-by: Sebastian Andrzej Siewior --- 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