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#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H
#include <linux/threads.h>
extern unsigned int local_irq_count[NR_CPUS];
/*
* Are we in an interrupt context? Either doing bottom half
* or hardware interrupt processing?
*/
#define in_interrupt() ({ const int __cpu = smp_processor_id(); \
(local_irq_count[__cpu] + local_bh_count[__cpu] != 0); })
#define in_irq() (local_irq_count[smp_processor_id()] != 0)
#ifndef __SMP__
#define hardirq_trylock(cpu) (local_irq_count[cpu] == 0)
#define hardirq_endlock(cpu) do { } while (0)
#define hardirq_enter(cpu) (local_irq_count[cpu]++)
#define hardirq_exit(cpu) (local_irq_count[cpu]--)
#define synchronize_irq() do { } while (0)
#else
#error SMP not supported
#endif /* __SMP__ */
#endif /* __ASM_HARDIRQ_H */
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