cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ratelimit_types.h (1361B)

      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_raw.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_FLAGS(name, interval_init, burst_init, flags_init) { \
     27		.lock		= __RAW_SPIN_LOCK_UNLOCKED(name.lock),		  \
     28		.interval	= interval_init,				  \
     29		.burst		= burst_init,					  \
     30		.flags		= flags_init,					  \
     31	}
     32
     33#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) \
     34	RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, 0)
     35
     36#define RATELIMIT_STATE_INIT_DISABLED					\
     37	RATELIMIT_STATE_INIT(ratelimit_state, 0, DEFAULT_RATELIMIT_BURST)
     38
     39#define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init)		\
     40									\
     41	struct ratelimit_state name =					\
     42		RATELIMIT_STATE_INIT(name, interval_init, burst_init)	\
     43
     44extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
     45#define __ratelimit(state) ___ratelimit(state, __func__)
     46
     47#endif /* _LINUX_RATELIMIT_TYPES_H */