From 899dd25ae272c73407c1477ec223982d0b57a668 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Wed, 8 Jul 2009 13:03:06 -0400 Subject: [PATCH 2/6] fedora: linux-2.6-debug-nmi-timeout.patch --- arch/x86/kernel/apic/nmi.c | 2 +- lib/Kconfig.debug | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c index b3025b4..e82a450 100644 --- a/arch/x86/kernel/apic/nmi.c +++ b/arch/x86/kernel/apic/nmi.c @@ -436,7 +436,7 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason) * wait a few IRQs (5 seconds) before doing the oops ... */ local_inc(&__get_cpu_var(alert_counter)); - if (local_read(&__get_cpu_var(alert_counter)) == 5 * nmi_hz) + if (local_read(&__get_cpu_var(alert_counter)) == CONFIG_DEBUG_NMI_TIMEOUT * nmi_hz) /* * die_nmi will return ONLY if NOTIFY_STOP happens.. */ diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 12327b2..2790b4f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -245,6 +245,14 @@ config SCHEDSTATS application, you can say N to avoid the very slight overhead this adds. +config DEBUG_NMI_TIMEOUT + int "Number of seconds before NMI timeout" + depends on X86 + default 5 + help + This value is the number of seconds the NMI watchdog will tick + before it decides the machine has hung. + config TIMER_STATS bool "Collect kernel timers statistics" depends on DEBUG_KERNEL && PROC_FS -- 1.6.2.5