kernel/include/linux/bottom_half.h

   1 #ifndef _LINUX_BH_H
   2 #define _LINUX_BH_H
   3
   4 #include <linux/preempt.h>
   5
   6 #ifdef CONFIG_PREEMPT_RT_FULL
   7
   8 extern void __local_bh_disable(void);
   9 extern void _local_bh_enable(void);
  10 extern void __local_bh_enable(void);
  11
  12 static inline void local_bh_disable(void)
  13 {
  14         __local_bh_disable();
  15 }
  16
  17 static inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
  18 {
  19         __local_bh_disable();
  20 }
  21
  22 static inline void local_bh_enable(void)
  23 {
  24         __local_bh_enable();
  25 }
  26
  27 static inline void __local_bh_enable_ip(unsigned long ip, unsigned int cnt)
  28 {
  29         __local_bh_enable();
  30 }
  31
  32 static inline void local_bh_enable_ip(unsigned long ip)
  33 {
  34         __local_bh_enable();
  35 }
  36
  37 #else
  38
  39 #ifdef CONFIG_TRACE_IRQFLAGS
  40 extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
  41 #else
  42 static __always_inline void __local_bh_disable_ip(unsigned long ip, unsigned int cnt)
  43 {
  44         preempt_count_add(cnt);
  45         barrier();
  46 }
  47 #endif
  48
  49 static inline void local_bh_disable(void)
  50 {
  51         __local_bh_disable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
  52 }
  53
  54 extern void _local_bh_enable(void);
  55 extern void __local_bh_enable_ip(unsigned long ip, unsigned int cnt);
  56
  57 static inline void local_bh_enable_ip(unsigned long ip)
  58 {
  59         __local_bh_enable_ip(ip, SOFTIRQ_DISABLE_OFFSET);
  60 }
  61
  62 static inline void local_bh_enable(void)
  63 {
  64         __local_bh_enable_ip(_THIS_IP_, SOFTIRQ_DISABLE_OFFSET);
  65 }
  66 #endif
  67
  68 #endif /* _LINUX_BH_H */