Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_RATELIMIT_TYPES_H
3#define _LINUX_RATELIMIT_TYPES_H
4
5#include <linux/bits.h>
6#include <linux/param.h>
7#include <linux/spinlock_types.h>
8
9#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
10#define DEFAULT_RATELIMIT_BURST 10
11
12/* issue num suppressed message on exit */
13#define RATELIMIT_MSG_ON_RELEASE BIT(0)
14
15struct ratelimit_state {
16 raw_spinlock_t lock; /* protect the state */
17
18 int interval;
19 int burst;
20 int printed;
21 int missed;
22 unsigned long begin;
23 unsigned long flags;
24};
25
26#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) { \
27 .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \
28 .interval = interval_init, \
29 .burst = burst_init, \
30 }
31
32#define RATELIMIT_STATE_INIT_DISABLED \
33 RATELIMIT_STATE_INIT(ratelimit_state, 0, DEFAULT_RATELIMIT_BURST)
34
35#define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init) \
36 \
37 struct ratelimit_state name = \
38 RATELIMIT_STATE_INIT(name, interval_init, burst_init) \
39
40extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
41#define __ratelimit(state) ___ratelimit(state, __func__)
42
43#endif /* _LINUX_RATELIMIT_TYPES_H */