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[PATCH] i386: Add SMP support on i386 to reservation framework

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This patch includes the changes to make the nmi watchdog on i386 SMP aware.
A bunch of code was moved around to make it simpler to read.  In addition,
it is now possible to determine if a particular NMI was the result of the
watchdog or not.  This feature allows the kernel to filter out unknown NMIs
easier.

Signed-off-by:  Don Zickus <dzickus@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Don Zickus
2006-09-26 10:52:26 +02:00
committed by Andi Kleen
parent f2802e7f57
commit b7471c6da9
5 changed files with 361 additions and 192 deletions
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5
include/asm-i386/nmi.h
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@@ -32,13 +32,14 @@ extern void release_perfctr_nmi(unsigned int);
extern int reserve_evntsel_nmi(unsigned int);
extern void release_evntsel_nmi(unsigned int);
extern void setup_apic_nmi_watchdog (void);
extern void setup_apic_nmi_watchdog (void *);
extern int reserve_lapic_nmi(void);
extern void release_lapic_nmi(void);
extern void disable_timer_nmi_watchdog(void);
extern void enable_timer_nmi_watchdog(void);
extern void nmi_watchdog_tick (struct pt_regs * regs);
extern void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
extern atomic_t nmi_active;
extern unsigned int nmi_watchdog;
#define NMI_DEFAULT -1
#define NMI_NONE 0