tools/perf/util/unwind-libdw.h

File Facts

System

Linux kernel

Corpus path

tools/perf/util/unwind-libdw.h

Extension

.h

Size

628 bytes

Lines

33

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• stdint.h
• unwind.h

Detected Declarations

• struct machine
• struct perf_sample
• struct thread
• struct unwind_info

Annotated Snippet

struct unwind_info {
	void			*dwfl;
	struct perf_sample      *sample;
	struct machine          *machine;
	struct thread           *thread;
	unwind_entry_cb_t	cb;
	void			*arg;
	int			max_stack;
	int			idx;
	uint32_t		e_flags;
	uint16_t		e_machine;
	bool			best_effort;
	struct unwind_entry	entries[];
};

void libdw__invalidate_dwfl(struct maps *maps, void *dwfl);
#endif

#endif /* __PERF_UNWIND_LIBDW_H */

Annotation

• Immediate include surface: `stdint.h`, `unwind.h`.
• Detected declarations: `struct machine`, `struct perf_sample`, `struct thread`, `struct unwind_info`.
• Atlas domain: Support Tooling And Documentation / tools.
• 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.