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hardirq.h

#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H

#include <linux/cache.h>
#include <linux/threads.h>
#include <asm/irq.h>

#define NR_IPI    5

00010 typedef struct {
      unsigned int __softirq_pending;
#ifdef CONFIG_LOCAL_TIMERS
      unsigned int local_timer_irqs;
#endif
#ifdef CONFIG_SMP
      unsigned int ipi_irqs[NR_IPI];
#endif
} ____cacheline_aligned irq_cpustat_t;

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

#define __inc_irq_stat(cpu, member) __IRQ_STAT(cpu, member)++
#define __get_irq_stat(cpu, member) __IRQ_STAT(cpu, member)

#ifdef CONFIG_SMP
u64 smp_irq_stat_cpu(unsigned int cpu);
#else
#define smp_irq_stat_cpu(cpu) 0
#endif

#define arch_irq_stat_cpu     smp_irq_stat_cpu

#if NR_IRQS > 512
#define HARDIRQ_BITS    10
#elif NR_IRQS > 256
#define HARDIRQ_BITS    9
#else
#define HARDIRQ_BITS    8
#endif

/*
 * The hardirq mask has to be large enough to have space
 * for potentially all IRQ sources in the system nesting
 * on a single CPU:
 */
#if (1 << HARDIRQ_BITS) < NR_IRQS
# error HARDIRQ_BITS is too low!
#endif

#define __ARCH_IRQ_EXIT_IRQS_DISABLED     1

#endif /* __ASM_HARDIRQ_H */

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