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softirq.h
Package: linux-2.4.20.tar.gz　[view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
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Linux-Unix program

Development Platform:

Unix_Linux

softirq.h：Code Content
  1. /*
  2.  *  include/asm-s390/softirq.h
  3.  *
  4.  *  S390 version
  5.  *
  6.  *  Derived from "include/asm-i386/softirq.h"
  7.  */
  9. #ifndef __ASM_SOFTIRQ_H
  10. #define __ASM_SOFTIRQ_H
  12. #ifndef __LINUX_SMP_H
  13. #include <linux/smp.h>
  14. #endif
  16. #include <asm/atomic.h>
  17. #include <asm/hardirq.h>
  18. #include <asm/lowcore.h>
  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)
  25. #define local_bh_disable()      cpu_bh_disable(smp_processor_id())
  26. #define __local_bh_enable()     __cpu_bh_enable(smp_processor_id())
  28. #define in_softirq() (local_bh_count(smp_processor_id()) != 0)
  30. extern void do_call_softirq(void);
  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)
  42. #endif /* __ASM_SOFTIRQ_H */