include/asm-mips/softirq.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1997, 1998, 1999, 2000, 2001 Ralf Baechle
   7  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   8  * Copyright (C) 1999, 2001 MIPS Technologies, Inc.
   9  */
  10 #ifndef _ASM_SOFTIRQ_H
  11 #define _ASM_SOFTIRQ_H
  12
  13 #include <asm/atomic.h>
  14 #include <asm/hardirq.h>
  15
  16 static inline void cpu_bh_disable(int cpu)
  17 {
  18         local_bh_count(cpu)++;
  19         barrier();
  20 }
  21
  22 static inline void __cpu_bh_enable(int cpu)
  23 {
  24         barrier();
  25         local_bh_count(cpu)--;
  26 }
  27
  28
  29 #define local_bh_disable()      cpu_bh_disable(smp_processor_id())
  30 #define __local_bh_enable()     __cpu_bh_enable(smp_processor_id())
  31 #define local_bh_enable()                                       \
  32 do {                                                            \
  33         int cpu;                                                \
  34                                                                 \
  35         barrier();                                              \
  36         cpu = smp_processor_id();                               \
  37         if (!--local_bh_count(cpu) && softirq_pending(cpu))     \
  38                 do_softirq();                                   \
  39 } while (0)
  40
  41 #define in_softirq() (local_bh_count(smp_processor_id()) != 0)
  42
  43 #endif /* _ASM_SOFTIRQ_H */