include/asm-s390x/softirq.h

   1 /*
   2  *  include/asm-s390/softirq.h
   3  *
   4  *  S390 version
   5  *
   6  *  Derived from "include/asm-i386/softirq.h"
   7  */
   8
   9 #ifndef __ASM_SOFTIRQ_H
  10 #define __ASM_SOFTIRQ_H
  11
  12 #ifndef __LINUX_SMP_H
  13 #include <linux/smp.h>
  14 #endif
  15
  16 #include <asm/atomic.h>
  17 #include <asm/hardirq.h>
  18 #include <asm/lowcore.h>
  19
  20 #define __cpu_bh_enable(cpu) \
  21                 do { barrier(); local_bh_count(cpu)--; } while (0)
  22 #define cpu_bh_disable(cpu) \
  23                 do { local_bh_count(cpu)++; barrier(); } while (0)
  24
  25 #define local_bh_disable()      cpu_bh_disable(smp_processor_id())
  26 #define __local_bh_enable()     __cpu_bh_enable(smp_processor_id())
  27
  28 #define in_softirq() (local_bh_count(smp_processor_id()) != 0)
  29
  30 extern void do_call_softirq(void);
  31
  32 #define local_bh_enable()                                               \
  33 do {                                                                    \
  34         unsigned int *ptr = &local_bh_count(smp_processor_id());        \
  35         barrier();                                                      \
  36         if (!--*ptr)                                                    \
  37                 if (softirq_pending(smp_processor_id()))                \
  38                         /* Use the async. stack for softirq */          \
  39                         do_call_softirq();                              \
  40 } while (0)
  41
  42 #endif  /* __ASM_SOFTIRQ_H */
  43
  44
  45
  46
  47
  48
  49