b7471c6da9
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>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
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* linux/include/asm-i386/nmi.h
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*/
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#ifndef ASM_NMI_H
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#define ASM_NMI_H
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#include <linux/pm.h>
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struct pt_regs;
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typedef int (*nmi_callback_t)(struct pt_regs * regs, int cpu);
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/**
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* set_nmi_callback
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*
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* Set a handler for an NMI. Only one handler may be
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* set. Return 1 if the NMI was handled.
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*/
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void set_nmi_callback(nmi_callback_t callback);
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/**
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* unset_nmi_callback
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*
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* Remove the handler previously set.
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*/
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void unset_nmi_callback(void);
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extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
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extern int avail_to_resrv_perfctr_nmi(unsigned int);
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extern int reserve_perfctr_nmi(unsigned int);
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extern void release_perfctr_nmi(unsigned int);
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extern int reserve_evntsel_nmi(unsigned int);
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extern void release_evntsel_nmi(unsigned int);
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extern void setup_apic_nmi_watchdog (void *);
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extern int reserve_lapic_nmi(void);
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extern void release_lapic_nmi(void);
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extern void disable_timer_nmi_watchdog(void);
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extern void enable_timer_nmi_watchdog(void);
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extern void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
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extern atomic_t nmi_active;
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extern unsigned int nmi_watchdog;
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#define NMI_DEFAULT -1
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#define NMI_NONE 0
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#define NMI_IO_APIC 1
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#define NMI_LOCAL_APIC 2
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#define NMI_INVALID 3
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#endif /* ASM_NMI_H */
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