datapath/linux/compat/include/linux/kernel.h

   1 #ifndef __KERNEL_H_WRAPPER
   2 #define __KERNEL_H_WRAPPER 1
   3
   4 #include_next <linux/kernel.h>
   5 #ifndef HAVE_LOG2_H
   6 #include <linux/log2.h>
   7 #endif
   8
   9 #include <linux/version.h>
  10
  11 #ifndef USHRT_MAX
  12 #define USHRT_MAX       ((u16)(~0U))
  13 #define SHRT_MAX        ((s16)(USHRT_MAX>>1))
  14 #define SHRT_MIN        ((s16)(-SHRT_MAX - 1))
  15 #endif
  16
  17 #ifndef DIV_ROUND_UP
  18 #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
  19 #endif
  20
  21 #ifndef rounddown
  22 #define rounddown(x, y) (                               \
  23 {                                                       \
  24         typeof(x) __x = (x);                            \
  25         __x - (__x % (y));                              \
  26 }                                                       \
  27 )
  28 #endif
  29
  30 /* U32_MAX was introduced in include/linux/kernel.h after version 3.14. */
  31 #ifndef U32_MAX
  32 #define U32_MAX         ((u32)~0U)
  33 #endif
  34
  35 #endif /* linux/kernel.h */