include/asm-arm/softirq.h

   1 #ifndef __ASM_SOFTIRQ_H
   2 #define __ASM_SOFTIRQ_H
   3
   4 #include <asm/atomic.h>
   5 #include <asm/hardirq.h>
   6
   7 #define __cpu_bh_enable(cpu) \
   8                 do { barrier(); local_bh_count(cpu)--; } while (0)
   9 #define cpu_bh_disable(cpu) \
  10                 do { local_bh_count(cpu)++; barrier(); } while (0)
  11
  12 #define local_bh_disable()      cpu_bh_disable(smp_processor_id())
  13 #define __local_bh_enable()     __cpu_bh_enable(smp_processor_id())
  14
  15 #define in_softirq()            (local_bh_count(smp_processor_id()) != 0)
  16
  17 #define local_bh_enable()                                               \
  18 do {                                                                    \
  19         unsigned int *ptr = &local_bh_count(smp_processor_id());        \
  20         if (!--*ptr && ptr[-2])                                         \
  21                 __asm__("bl%? __do_softirq": : : "lr");/* out of line */\
  22 } while (0)
  23
  24 #endif  /* __ASM_SOFTIRQ_H */