166d751479
In order to consolidate the NMI die_chain events, we need to setup the priorities for the die notifiers. I started by defining a bunch of common priorities that can be used by the notifier blocks. Then I modified the notifier blocks to use the newly created priorities. Now that the priorities are straightened out, it should be easier to remove the event DIE_NMI_IPI. Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-4-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#ifndef _ASM_X86_NMI_H
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#define _ASM_X86_NMI_H
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#include <linux/pm.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#ifdef CONFIG_X86_LOCAL_APIC
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extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
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extern int avail_to_resrv_perfctr_nmi_bit(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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struct ctl_table;
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extern int proc_nmi_enabled(struct ctl_table *, int ,
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void __user *, size_t *, loff_t *);
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extern int unknown_nmi_panic;
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void arch_trigger_all_cpu_backtrace(void);
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#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
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#endif
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/*
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* Define some priorities for the nmi notifier call chain.
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*
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* Create a local nmi bit that has a higher priority than
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* external nmis, because the local ones are more frequent.
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*
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* Also setup some default high/normal/low settings for
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* subsystems to registers with. Using 4 bits to seperate
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* the priorities. This can go alot higher if needed be.
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*/
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#define NMI_LOCAL_SHIFT 16 /* randomly picked */
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#define NMI_LOCAL_BIT (1ULL << NMI_LOCAL_SHIFT)
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#define NMI_HIGH_PRIOR (1ULL << 8)
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#define NMI_NORMAL_PRIOR (1ULL << 4)
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#define NMI_LOW_PRIOR (1ULL << 0)
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#define NMI_LOCAL_HIGH_PRIOR (NMI_LOCAL_BIT | NMI_HIGH_PRIOR)
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#define NMI_LOCAL_NORMAL_PRIOR (NMI_LOCAL_BIT | NMI_NORMAL_PRIOR)
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#define NMI_LOCAL_LOW_PRIOR (NMI_LOCAL_BIT | NMI_LOW_PRIOR)
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void stop_nmi(void);
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void restart_nmi(void);
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#endif /* _ASM_X86_NMI_H */
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