tools/perf/util/help-unknown-cmd.c

File Facts

System

Linux kernel

Corpus path

tools/perf/util/help-unknown-cmd.c

Extension

.c

Size

3218 bytes

Lines

123

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

• cache.h
• config.h
• poll.h
• stdio.h
• stdlib.h
• subcmd/help.h
• ../builtin.h
• levenshtein.h
• linux/zalloc.h

Detected Declarations

• function perf_unknown_cmd_config
• function levenshtein_compare
• function add_cmd_list

Annotated Snippet

if (autocorrect > 0) {
			fprintf(stderr, "in %0.1f seconds automatically...\n",
				(float)autocorrect/10.0);
			poll(NULL, 0, autocorrect * 100);
		}
		return assumed;
	}

	fprintf(stderr, "perf: '%s' is not a perf-command. See 'perf --help'.\n", cmd);

	if (main_cmds->cnt && best_similarity < 6) {
		fprintf(stderr, "\nDid you mean %s?\n",
			n < 2 ? "this": "one of these");

		for (i = 0; i < n; i++)
			fprintf(stderr, "\t%s\n", main_cmds->names[i]->name);
	}
end:
	clean_cmdnames(&other_cmds);
	return NULL;
}

Annotation

• Immediate include surface: `cache.h`, `config.h`, `poll.h`, `stdio.h`, `stdlib.h`, `subcmd/help.h`, `../builtin.h`, `levenshtein.h`.
• Detected declarations: `function perf_unknown_cmd_config`, `function levenshtein_compare`, `function add_cmd_list`.
• 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.