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sparc64: Manage NMI watchdog enabling like x86.

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Use a per-cpu 'wd_enabled' boolean and a global atomic_t count
of watchdog NMI enabled cpus which is set to '-1' if something
is wrong with the watchdog and it can't be used.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2009-09-08 23:16:06 -07:00
parent 825c9fb47a
commit a8f2226455
3 changed files with 45 additions and 19 deletions
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arch/sparc/include/asm/nmi.h
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@@ -5,6 +5,6 @@ extern int __init nmi_init(void);
extern void perfctr_irq(int irq, struct pt_regs *regs);
extern void nmi_adjust_hz(unsigned int new_hz);
extern int nmi_usable;
extern atomic_t nmi_active;
#endif /* __NMI_H */