mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 22:39:20 +07:00
89e3f90995
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
#ifndef _LINUX_RATELIMIT_H
|
|
#define _LINUX_RATELIMIT_H
|
|
|
|
#include <linux/param.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
|
|
#define DEFAULT_RATELIMIT_BURST 10
|
|
|
|
struct ratelimit_state {
|
|
raw_spinlock_t lock; /* protect the state */
|
|
|
|
int interval;
|
|
int burst;
|
|
int printed;
|
|
int missed;
|
|
unsigned long begin;
|
|
};
|
|
|
|
#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) \
|
|
|
|
static inline void ratelimit_state_init(struct ratelimit_state *rs,
|
|
int interval, int burst)
|
|
{
|
|
raw_spin_lock_init(&rs->lock);
|
|
rs->interval = interval;
|
|
rs->burst = burst;
|
|
rs->printed = 0;
|
|
rs->missed = 0;
|
|
rs->begin = 0;
|
|
}
|
|
|
|
extern struct ratelimit_state printk_ratelimit_state;
|
|
|
|
extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
|
|
#define __ratelimit(state) ___ratelimit(state, __func__)
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
|
|
#define WARN_ON_RATELIMIT(condition, state) \
|
|
WARN_ON((condition) && __ratelimit(state))
|
|
|
|
#define WARN_RATELIMIT(condition, format, ...) \
|
|
({ \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
int rtn = !!(condition); \
|
|
\
|
|
if (unlikely(rtn && __ratelimit(&_rs))) \
|
|
WARN(rtn, format, ##__VA_ARGS__); \
|
|
\
|
|
rtn; \
|
|
})
|
|
|
|
#else
|
|
|
|
#define WARN_ON_RATELIMIT(condition, state) \
|
|
WARN_ON(condition)
|
|
|
|
#define WARN_RATELIMIT(condition, format, ...) \
|
|
({ \
|
|
int rtn = WARN(condition, format, ##__VA_ARGS__); \
|
|
rtn; \
|
|
})
|
|
|
|
#endif
|
|
|
|
#endif /* _LINUX_RATELIMIT_H */
|