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#ifndef __ASM_HARDIRQ_H

#define __ASM_HARDIRQ_H

#include <linux/config.h>

#include <linux/cache.h>

#include <linux/threads.h>

/* softirq.h is sensitive to the offsets of these fields */

typedef struct {

        unsigned int __softirq_pending;

        unsigned int __local_irq_count;

        unsigned int __local_bh_count;

        unsigned int __syscall_count;

        struct task_struct * __ksoftirqd_task; /* waitqueue is too large */

} ____cacheline_aligned irq_cpustat_t;

#include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */

/*

 * 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 CONFIG_SMP

#define hardirq_trylock(cpu)    (local_irq_count(cpu) == 0)

#define hardirq_endlock(cpu)    do { } while (0)

#define irq_enter(cpu,irq)      (local_irq_count(cpu)++)

#define irq_exit(cpu,irq)       (local_irq_count(cpu)--)

#define synchronize_irq()       do { } while (0)

#else

#error SMP not supported

#endif /* CONFIG_SMP */

#endif /* __ASM_HARDIRQ_H */