include/linux/ratelimit_types.h

File Facts

System

Linux kernel

Corpus path

include/linux/ratelimit_types.h

Extension

.h

Size

1408 bytes

Lines

49

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bits.h
• linux/param.h
• linux/spinlock_types_raw.h

Detected Declarations

• struct ratelimit_state

Annotated Snippet

struct ratelimit_state {
	raw_spinlock_t	lock;		/* protect the state */

	int		interval;
	int		burst;
	atomic_t	rs_n_left;
	atomic_t	missed;
	unsigned int	flags;
	unsigned long	begin;
};

#define RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, flags_init) { \
		.lock		= __RAW_SPIN_LOCK_UNLOCKED(name.lock),		  \
		.interval	= interval_init,				  \
		.burst		= burst_init,					  \
		.flags		= flags_init,					  \
	}

#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) \
	RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, 0)

#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 */

Annotation

• Immediate include surface: `linux/bits.h`, `linux/param.h`, `linux/spinlock_types_raw.h`.
• Detected declarations: `struct ratelimit_state`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.