Messages in this thread Patch in this message | | | Subject | [PATCH RT] have x86_64 nmi watchdog also count irq 0 | From | Steven Rostedt <> | Date | Wed, 20 Jun 2007 14:51:03 -0400 |
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I was getting false reports about NMI lockups on CPU 3. For some reason CPU 0,1 and 2 where using apic timer, and CPU 3 was using the irq 0 timer.
This patch makes the NMI watchdog count both the apic timer and the irq0 timer.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Index: linux-2.6-rt-test/arch/x86_64/kernel/nmi.c =================================================================== --- linux-2.6-rt-test.orig/arch/x86_64/kernel/nmi.c +++ linux-2.6-rt-test/arch/x86_64/kernel/nmi.c @@ -938,7 +938,7 @@ int notrace __kprobes nmi_watchdog_tick( touched = 1; } - sum = read_pda(apic_timer_irqs); + sum = read_pda(apic_timer_irqs) + kstat_cpu(cpu).irqs[0]; if (__get_cpu_var(nmi_touch)) { __get_cpu_var(nmi_touch) = 0;
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