drivers/base/test/test_async_driver_probe.c

File Facts

System

Linux kernel

Corpus path

drivers/base/test/test_async_driver_probe.c

Extension

.c

Size

7800 bytes

Lines

300

Domain

Driver Families

Bucket

drivers/base

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/delay.h
• linux/init.h
• linux/hrtimer.h
• linux/module.h
• linux/platform_device.h
• linux/time.h
• linux/numa.h
• linux/nodemask.h
• linux/topology.h

Detected Declarations

• function test_probe
• function test_platform_device_register_node
• function test_async_probe_init
• function for_each_online_cpu
• function test_async_probe_exit
• module init test_async_probe_init

Annotated Snippet

module_init(test_async_probe_init);

static void __exit test_async_probe_exit(void)
{
	int id = 2;

	platform_driver_unregister(&async_driver);
	platform_driver_unregister(&sync_driver);

	while (id--)
		platform_device_unregister(sync_dev[id]);

	id = NR_CPUS * 2;
	while (id--)
		platform_device_unregister(async_dev[id]);
}
module_exit(test_async_probe_exit);

MODULE_DESCRIPTION("Test module for asynchronous driver probing");
MODULE_AUTHOR("Dmitry Torokhov <dtor@chromium.org>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/init.h`, `linux/hrtimer.h`, `linux/module.h`, `linux/platform_device.h`, `linux/time.h`, `linux/numa.h`, `linux/nodemask.h`.
• Detected declarations: `function test_probe`, `function test_platform_device_register_node`, `function test_async_probe_init`, `function for_each_online_cpu`, `function test_async_probe_exit`, `module init test_async_probe_init`.
• Atlas domain: Driver Families / drivers/base.
• 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.