backport/backport-include/linux/timekeeping.h

   1 #ifndef __BACKPORT_TIMEKEEPING_H
   2 #define __BACKPORT_TIMEKEEPING_H
   3 #include <linux/version.h>
   4 #include <linux/types.h>
   5
   6 #if LINUX_VERSION_IS_GEQ(3,17,0)
   7 #include_next <linux/timekeeping.h>
   8 #endif
   9
  10 #if LINUX_VERSION_IS_LESS(3,17,0)
  11 #define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
  12 extern ktime_t ktime_get(void);
  13 #define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
  14 static inline u64 ktime_get_ns(void)
  15 {
  16         return ktime_to_ns(ktime_get());
  17 }
  18
  19 extern ktime_t ktime_get_boottime(void);
  20 #define ktime_get_boot_ns LINUX_BACKPORT(ktime_get_boot_ns)
  21 static inline u64 ktime_get_boot_ns(void)
  22 {
  23         return ktime_to_ns(ktime_get_boottime());
  24 }
  25 #endif /* < 3.17 */
  26
  27 #if LINUX_VERSION_IS_LESS(3,19,0)
  28 static inline time64_t ktime_get_seconds(void)
  29 {
  30         struct timespec t;
  31
  32         ktime_get_ts(&t);
  33
  34         return t.tv_sec;
  35 }
  36 #endif
  37
  38 #endif /* __BACKPORT_TIMEKEEPING_H */