tools/testing/selftests/net/bench/page_pool/bench_page_pool_simple.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/net/bench/page_pool/bench_page_pool_simple.c

Extension

.c

Size

6987 bytes

Lines

268

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/interrupt.h
• linux/limits.h
• linux/module.h
• linux/mutex.h
• net/page_pool/helpers.h
• time_bench.h

Detected Declarations

• enum benchmark_bit
• enum test_type
• function time_bench_for_loop
• function time_bench_atomic_inc
• function time_bench_lock
• function pp_fill_ptr_ring
• function time_bench_page_pool
• function time_bench_page_pool01_fast_path
• function time_bench_page_pool02_ptr_ring
• function time_bench_page_pool03_slow
• function run_benchmark_tests
• function bench_page_pool_simple_module_init
• function bench_page_pool_simple_module_exit
• module init bench_page_pool_simple_module_init

Annotated Snippet

module_init(bench_page_pool_simple_module_init);

static void __exit bench_page_pool_simple_module_exit(void)
{
	if (verbose)
		pr_info("Unloaded\n");
}
module_exit(bench_page_pool_simple_module_exit);

MODULE_DESCRIPTION("Benchmark of page_pool simple cases");
MODULE_AUTHOR("Jesper Dangaard Brouer <netoptimizer@brouer.com>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/interrupt.h`, `linux/limits.h`, `linux/module.h`, `linux/mutex.h`, `net/page_pool/helpers.h`, `time_bench.h`.
• Detected declarations: `enum benchmark_bit`, `enum test_type`, `function time_bench_for_loop`, `function time_bench_atomic_inc`, `function time_bench_lock`, `function pp_fill_ptr_ring`, `function time_bench_page_pool`, `function time_bench_page_pool01_fast_path`, `function time_bench_page_pool02_ptr_ring`, `function time_bench_page_pool03_slow`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.