====================================================================
@@ -487,14 +487,16 @@ int proc_nmi_enabled(struct ctl_table *t
return -EIO;
}
-#ifdef CONFIG_X86_64
/* if nmi_watchdog is not set yet, then set it */
nmi_watchdog_default();
-#else
- if (lapic_watchdog_ok())
- nmi_watchdog = NMI_LOCAL_APIC;
- else
- nmi_watchdog = NMI_IO_APIC;
+
+#ifdef CONFIG_X86_32
+ if (nmi_watchdog == NMI_NONE) {
+ if (lapic_watchdog_ok())
+ nmi_watchdog = NMI_LOCAL_APIC;
+ else
+ nmi_watchdog = NMI_IO_APIC;
+ }
#endif
if (nmi_watchdog == NMI_LOCAL_APIC) {
====================================================================
@@ -38,12 +38,10 @@ static inline void unset_nmi_pm_callback
#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 die_nmi(char *str, struct pt_regs *regs, int do_panic);
+extern void nmi_watchdog_default(void);
extern int check_nmi_watchdog(void);
extern int nmi_watchdog_enabled;
extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
64bit mode bootstrap code does set nmi_watchdog to NMI_NONE by default and doing the same on 32bit mode is safe too. Such an action saves us from several #ifdef. Btw, my previous commit commit 19ec673ced067316b9732bc6d1c4ff4052e5f795 Author: Cyrill Gorcunov <gorcunov@gmail.com> Date: Wed May 28 23:00:47 2008 +0400 x86: nmi - fix incorrect NMI watchdog used by default did not fix the problem completely, moreover it introduced additional bug - nmi_watchdog would be set to either NMI_LOCAL_APIC or NMI_IO_APIC _regardless_ to boot option if being enabled thru /proc/sys/kernel/nmi_watchdog. Sorry for that. Fix it too. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> ---