tools/testing/selftests/bpf/progs/test_tracepoint.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/bpf/progs/test_tracepoint.c

Extension

.c

Size

528 bytes

Lines

26

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

• vmlinux.h
• bpf/bpf_helpers.h

Detected Declarations

• struct sched_switch_args
• function oncpu

Annotated Snippet

struct sched_switch_args {
	unsigned long long pad;
	char prev_comm[TASK_COMM_LEN];
	int prev_pid;
	int prev_prio;
	long long prev_state;
	char next_comm[TASK_COMM_LEN];
	int next_pid;
	int next_prio;
};

SEC("tracepoint/sched/sched_switch")
int oncpu(struct sched_switch_args *ctx)
{
	return 0;
}

char _license[] SEC("license") = "GPL";

Annotation

• Immediate include surface: `vmlinux.h`, `bpf/bpf_helpers.h`.
• Detected declarations: `struct sched_switch_args`, `function oncpu`.
• 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.