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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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