include/linux/ratelimit.h

   1 #ifndef _LINUX_RATELIMIT_H
   2 #define _LINUX_RATELIMIT_H
   3 #include <linux/param.h>
   4
   5 #define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
   6 #define DEFAULT_RATELIMIT_BURST 10
   7
   8 struct ratelimit_state {
   9         int interval;
  10         int burst;
  11         int printed;
  12         int missed;
  13         unsigned long begin;
  14 };
  15
  16 #define DEFINE_RATELIMIT_STATE(name, interval, burst)           \
  17                 struct ratelimit_state name = {interval, burst,}
  18
  19 extern int __ratelimit(struct ratelimit_state *rs);
  20
  21 static inline int ratelimit(void)
  22 {
  23         static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL,
  24                                         DEFAULT_RATELIMIT_BURST);
  25         return __ratelimit(&rs);
  26 }
  27 #endif