include/uapi/linux/eventpoll.h

File Facts

System

Linux kernel

Corpus path

include/uapi/linux/eventpoll.h

Extension

.h

Size

3063 bytes

Lines

102

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/fcntl.h
• linux/types.h

Detected Declarations

• struct epoll_event
• struct epoll_params

Annotated Snippet

struct epoll_event {
	__poll_t events;
	__u64 data;
} EPOLL_PACKED;

struct epoll_params {
	__u32 busy_poll_usecs;
	__u16 busy_poll_budget;
	__u8 prefer_busy_poll;

	/* pad the struct to a multiple of 64bits */
	__u8 __pad;
};

#define EPOLL_IOC_TYPE 0x8A
#define EPIOCSPARAMS _IOW(EPOLL_IOC_TYPE, 0x01, struct epoll_params)
#define EPIOCGPARAMS _IOR(EPOLL_IOC_TYPE, 0x02, struct epoll_params)

#endif /* _UAPI_LINUX_EVENTPOLL_H */

Annotation

• Immediate include surface: `linux/fcntl.h`, `linux/types.h`.
• Detected declarations: `struct epoll_event`, `struct epoll_params`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.

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.