From 4b82b277707a39b97271439c475f186f63ec4692 Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Sat, 24 May 2008 19:36:35 +0400 Subject: [PATCH] x86: nmi_32.c - add nmi_watchdog_default helper Signed-off-by: Cyrill Gorcunov Cc: hpa@zytor.com Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/nmi_32.c | 19 +++++++++++++------ include/asm-x86/nmi.h | 4 +--- 2 files changed, 14 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/nmi_32.c b/arch/x86/kernel/nmi_32.c index 4437fe1edab..7714e847821 100644 --- a/arch/x86/kernel/nmi_32.c +++ b/arch/x86/kernel/nmi_32.c @@ -51,6 +51,17 @@ static DEFINE_PER_CPU(short, wd_enabled); static int endflag __initdata = 0; +/* Run after command line and cpu_init init, but before all other checks */ +void nmi_watchdog_default(void) +{ + if (nmi_watchdog != NMI_DEFAULT) + return; + if (lapic_watchdog_ok()) + nmi_watchdog = NMI_LOCAL_APIC; + else + nmi_watchdog = NMI_IO_APIC; +} + #ifdef CONFIG_SMP /* The performance counters used by NMI_LOCAL_APIC don't trigger when * the CPU is idle. To make sure the NMI watchdog really ticks on all @@ -437,12 +448,8 @@ int proc_nmi_enabled(struct ctl_table *table, int write, struct file *file, return -EIO; } - if (nmi_watchdog == NMI_DEFAULT) { - if (lapic_watchdog_ok()) - nmi_watchdog = NMI_LOCAL_APIC; - else - nmi_watchdog = NMI_IO_APIC; - } + /* if nmi_watchdog is not set yet, then set it */ + nmi_watchdog_default(); if (nmi_watchdog == NMI_LOCAL_APIC) { if (nmi_watchdog_enabled) diff --git a/include/asm-x86/nmi.h b/include/asm-x86/nmi.h index 7cd5b6a8813..1e8f34d7ab6 100644 --- a/include/asm-x86/nmi.h +++ b/include/asm-x86/nmi.h @@ -38,11 +38,9 @@ static inline void unset_nmi_pm_callback(struct pm_dev *dev) #ifdef CONFIG_X86_64 extern void default_do_nmi(struct pt_regs *); -extern void nmi_watchdog_default(void); -#else -#define nmi_watchdog_default() do {} while (0) #endif +extern void nmi_watchdog_default(void); extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); extern int check_nmi_watchdog(void); extern int nmi_watchdog_enabled; -- 2.41.0