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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_RATELIMIT_TYPES_H
#define _LINUX_RATELIMIT_TYPES_H
#include <linux/bits.h>
#include <linux/param.h>
#include <linux/spinlock_types.h>
#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
#define DEFAULT_RATELIMIT_BURST 10
/* issue num suppressed message on exit */
#define RATELIMIT_MSG_ON_RELEASE BIT(0)
struct ratelimit_state {
raw_spinlock_t lock; /* protect the state */
int interval;
int burst;
int printed;
int missed;
unsigned long begin;
unsigned long flags;
};
#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) { \
.lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \
.interval = interval_init, \
.burst = burst_init, \
}
#define RATELIMIT_STATE_INIT_DISABLED \
RATELIMIT_STATE_INIT(ratelimit_state, 0, DEFAULT_RATELIMIT_BURST)
#define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init) \
\
struct ratelimit_state name = \
RATELIMIT_STATE_INIT(name, interval_init, burst_init) \
extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
#define __ratelimit(state) ___ratelimit(state, __func__)
#endif /* _LINUX_RATELIMIT_TYPES_H */
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