arch/powerpc/mm/ptdump/ptdump.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/mm/ptdump/ptdump.h

Extension

.h

Size

408 bytes

Lines

24

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/seq_file.h

Detected Declarations

• struct flag_info
• struct ptdump_pg_level

Annotated Snippet

struct flag_info {
	u64		mask;
	u64		val;
	const char	*set;
	const char	*clear;
	bool		is_val;
	int		shift;
};

struct ptdump_pg_level {
	const struct flag_info *flag;
	char name[4];
	size_t num;
	u64 mask;
};

extern struct ptdump_pg_level pg_level[5];

void pt_dump_size(struct seq_file *m, unsigned long delta);

Annotation

• Immediate include surface: `linux/types.h`, `linux/seq_file.h`.
• Detected declarations: `struct flag_info`, `struct ptdump_pg_level`.
• Atlas domain: Architecture Layer / arch/powerpc.
• 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.