include/linux/nodemask.h

File Facts

System

Linux kernel

Corpus path

include/linux/nodemask.h

Extension

.h

Size

17781 bytes

Lines

541

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/threads.h
• linux/bitmap.h
• linux/minmax.h
• linux/nodemask_types.h
• linux/random.h

Detected Declarations

• struct nodemask_scratch
• enum node_states
• function __nodemask_pr_bits
• function error
• function __node_clear
• function __nodes_setall
• function __nodes_clear
• function __node_test_and_set
• function __nodes_and
• function __nodes_or
• function __nodes_xor
• function __nodes_andnot
• function __nodes_copy
• function __nodes_complement
• function __nodes_equal
• function __nodes_intersects
• function __nodes_subset
• function __nodes_empty
• function __nodes_full
• function __nodes_weight
• function __first_node
• function __next_node
• function __next_node_in
• function init_nodemask_of_node
• function __first_unset_node
• function __nodemask_parse_user
• function __nodelist_parse
• function __node_remap
• function __nodes_remap
• function __nodes_onto
• function __nodes_fold
• function node_state
• function node_set_state
• function node_clear_state
• function num_node_state
• function next_online_node
• function next_memory_node
• function node_set_online
• function node_set_offline
• function node_state
• function node_set_state
• function node_random

Annotated Snippet

struct nodemask_scratch {
	nodemask_t	mask1;
	nodemask_t	mask2;
};

#define NODEMASK_SCRATCH(x)						\
			NODEMASK_ALLOC(struct nodemask_scratch, x,	\
					GFP_KERNEL | __GFP_NORETRY)
#define NODEMASK_SCRATCH_FREE(x)	NODEMASK_FREE(x)


#endif /* __LINUX_NODEMASK_H */

Annotation

• Immediate include surface: `linux/threads.h`, `linux/bitmap.h`, `linux/minmax.h`, `linux/nodemask_types.h`, `linux/random.h`.
• Detected declarations: `struct nodemask_scratch`, `enum node_states`, `function __nodemask_pr_bits`, `function error`, `function __node_clear`, `function __nodes_setall`, `function __nodes_clear`, `function __node_test_and_set`, `function __nodes_and`, `function __nodes_or`.
• 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.