diff options
Diffstat (limited to 'include/linux/ratelimit.h')
| -rw-r--r-- | include/linux/ratelimit.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/ratelimit.h b/include/linux/ratelimit.h new file mode 100644 index 00000000000..668cf1bef03 --- /dev/null +++ b/include/linux/ratelimit.h @@ -0,0 +1,31 @@ +#ifndef _LINUX_RATELIMIT_H +#define _LINUX_RATELIMIT_H + +#include <linux/param.h> +#include <linux/spinlock_types.h> + +#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ) +#define DEFAULT_RATELIMIT_BURST 10 + +struct ratelimit_state { + spinlock_t lock; /* protect the state */ + + int interval; + int burst; + int printed; + int missed; + unsigned long begin; +}; + +#define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init) \ + \ + struct ratelimit_state name = { \ + .lock = __SPIN_LOCK_UNLOCKED(name.lock), \ + .interval = interval_init, \ + .burst = burst_init, \ + } + +extern int ___ratelimit(struct ratelimit_state *rs, const char *func); +#define __ratelimit(state) ___ratelimit(state, __func__) + +#endif /* _LINUX_RATELIMIT_H */ |