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 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
  12 #define pr_warn pr_warning
  13 #endif
  14
  15 /*
  16  * Print a one-time message (analogous to WARN_ONCE() et al):
  17  */
  18 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
  19 #undef printk_once
  20 #define printk_once(fmt, ...)                   \
  21 ({                                              \
  22         static bool __print_once;               \
  23                                                 \
  24         if (!__print_once) {                    \
  25                 __print_once = true;            \
  26                 printk(fmt, ##__VA_ARGS__);     \
  27         }                                       \
  28 })
  29
  30 #define pr_emerg_once(fmt, ...)                                 \
  31         printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
  32 #define pr_alert_once(fmt, ...)                                 \
  33         printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
  34 #define pr_crit_once(fmt, ...)                                  \
  35         printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
  36 #define pr_err_once(fmt, ...)                                   \
  37         printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  38 #define pr_warn_once(fmt, ...)                                  \
  39         printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
  40 #define pr_notice_once(fmt, ...)                                \
  41         printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
  42 #define pr_info_once(fmt, ...)                                  \
  43         printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
  44 #define pr_cont_once(fmt, ...)                                  \
  45         printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
  46
  47 #endif
  48
  49 #ifndef USHRT_MAX
  50 #define USHRT_MAX       ((u16)(~0U))
  51 #define SHRT_MAX        ((s16)(USHRT_MAX>>1))
  52 #define SHRT_MIN        ((s16)(-SHRT_MAX - 1))
  53 #endif
  54
  55 #ifndef DIV_ROUND_UP
  56 #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
  57 #endif
  58
  59 #ifndef rounddown
  60 #define rounddown(x, y) (                               \
  61 {                                                       \
  62         typeof(x) __x = (x);                            \
  63         __x - (__x % (y));                              \
  64 }                                                       \
  65 )
  66 #endif
  67
  68 #endif /* linux/kernel.h */