LXR linux-old/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()                                               \
  18do {                                                                    \
  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 */
  25