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| 1 | #ifndef __ASM_HARDIRQ_H | 
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| 2 | #define __ASM_HARDIRQ_H | 
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| 3 |  | 
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| 4 | extern unsigned int local_irq_count[1]; | 
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| 5 |  | 
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| 6 | /* | 
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| 7 | * Are we in an interrupt context? Either doing bottom half | 
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| 8 | * or hardware interrupt processing? | 
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| 9 | */ | 
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| 10 | int in_interrupt(); | 
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| 11 |  | 
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| 12 | #define hardirq_trylock(cpu)    (local_irq_count[cpu] == 0) | 
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| 13 | #define hardirq_endlock(cpu)    do { } while (0) | 
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| 14 |  | 
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| 15 | #define hardirq_enter(cpu)      (local_irq_count[cpu]++) | 
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| 16 | #define hardirq_exit(cpu)       (local_irq_count[cpu]--) | 
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| 17 |  | 
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| 18 | #define synchronize_irq() | 
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| 19 |  | 
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| 20 | #endif /* __ASM_HARDIRQ_H */ | 
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