tools/perf/trace/beauty/pid.c

File Facts

System

Linux kernel

Corpus path

tools/perf/trace/beauty/pid.c

Extension

.c

Size

576 bytes

Lines

22

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

• No C-style include directives detected by the generator.

Detected Declarations

• function syscall_arg__scnprintf_pid

Annotated Snippet

// SPDX-License-Identifier: LGPL-2.1

size_t syscall_arg__scnprintf_pid(char *bf, size_t size, struct syscall_arg *arg)
{
	int pid = arg->val;
	struct trace *trace = arg->trace;
	size_t printed = scnprintf(bf, size, "%d", pid);
	struct thread *thread = machine__findnew_thread(trace->host, pid, pid);

	if (thread != NULL) {
		if (!thread__comm_set(thread))
			thread__set_comm_from_proc(thread);

		if (thread__comm_set(thread))
			printed += scnprintf(bf + printed, size - printed,
					     " (%s)", thread__comm_str(thread));
		thread__put(thread);
	}

	return printed;
}

Annotation

• Detected declarations: `function syscall_arg__scnprintf_pid`.
• 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.