tools/perf/util/bpf-event.h

File Facts

System

Linux kernel

Corpus path

tools/perf/util/bpf-event.h

Extension

.h

Size

1711 bytes

Lines

74

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

• linux/compiler.h
• linux/rbtree.h
• api/fd/array.h
• stdio.h

Detected Declarations

• struct bpf_prog_info
• struct machine
• struct perf_env
• struct perf_sample
• struct perf_session
• struct record_opts
• struct evlist
• struct target
• struct bpf_metadata
• struct bpf_prog_info_node
• struct btf_node
• function machine__process_bpf
• function evlist__add_bpf_sb_event
• function __bpf_event__print_bpf_prog_info

Annotated Snippet

struct bpf_metadata {
	union perf_event *event;
	char		 **prog_names;
	__u64		 nr_prog_names;
};

struct bpf_prog_info_node {
	struct perf_bpil		*info_linear;
	struct bpf_metadata		*metadata;
	struct rb_node			rb_node;
};

struct btf_node {
	struct rb_node	rb_node;
	u32		id;
	u32		data_size;
	char		data[];
};

#ifdef HAVE_LIBBPF_SUPPORT
int machine__process_bpf(struct machine *machine, union perf_event *event,
			 struct perf_sample *sample);
int evlist__add_bpf_sb_event(struct evlist *evlist, struct perf_env *env);
void __bpf_event__print_bpf_prog_info(struct bpf_prog_info *info,
				      struct perf_env *env,
				      FILE *fp);
void bpf_metadata_free(struct bpf_metadata *metadata);
#else
static inline int machine__process_bpf(struct machine *machine __maybe_unused,
				       union perf_event *event __maybe_unused,
				       struct perf_sample *sample __maybe_unused)
{
	return 0;
}

static inline int evlist__add_bpf_sb_event(struct evlist *evlist __maybe_unused,
					   struct perf_env *env __maybe_unused)
{
	return 0;
}

static inline void __bpf_event__print_bpf_prog_info(struct bpf_prog_info *info __maybe_unused,
						    struct perf_env *env __maybe_unused,
						    FILE *fp __maybe_unused)
{

}

static inline void bpf_metadata_free(struct bpf_metadata *metadata __maybe_unused)
{

}
#endif // HAVE_LIBBPF_SUPPORT
#endif

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/rbtree.h`, `api/fd/array.h`, `stdio.h`.
• Detected declarations: `struct bpf_prog_info`, `struct machine`, `struct perf_env`, `struct perf_sample`, `struct perf_session`, `struct record_opts`, `struct evlist`, `struct target`, `struct bpf_metadata`, `struct bpf_prog_info_node`.
• 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.