include/linux/bottom_half.h

   1 #ifndef _LINUX_BH_H
   2 #define _LINUX_BH_H
   3
   4 #include <linux/preempt.h>
   5 #include <linux/preempt_mask.h>
   6
   7 #ifdef CONFIG_TRACE_IRQFLAGS
   8 extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
   9 #else
  10 static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
  11 {
  12         preempt_count_add(cnt);
  13         barrier();
  14 }
  15 #endif
  16
  17 static inline void local_bh_disable(void)
  18 {
  19         __local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
  20 }
  21
  22 extern void _local_bh_enable(void);
  23 extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);
  24
  25 static inline void local_bh_enable_ip(unsigned long ip)
  26 {
  27         __local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
  28 }
  29
  30 static inline void local_bh_enable(void)
  31 {
  32         __local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
  33 }
  34
  35 #endif /* _LINUX_BH_H */