include/asm-sh/hardirq.h

   1 #ifndef __ASM_SH_HARDIRQ_H
   2 #define __ASM_SH_HARDIRQ_H
   3
   4 #include <linux/threads.h>
   5
   6 extern unsigned int local_irq_count[NR_CPUS];
   7 #define in_interrupt()  (local_irq_count[smp_processor_id()] != 0)
   8
   9 #ifndef __SMP__
  10
  11 #define hardirq_trylock(cpu)    (local_irq_count[cpu] == 0)
  12 #define hardirq_endlock(cpu)    do { } while (0)
  13
  14 #define hardirq_enter(cpu)      (local_irq_count[cpu]++)
  15 #define hardirq_exit(cpu)       (local_irq_count[cpu]--)
  16
  17 #define synchronize_irq()       do { } while (0)
  18
  19 #else
  20
  21 #error Super-H SMP is not available
  22
  23 #endif /* __SMP__ */
  24 #endif /* __ASM_SH_HARDIRQ_H */