drivers/md/dm-vdo/thread-device.c

Source file repositories/reference/linux-study-clean/drivers/md/dm-vdo/thread-device.c

File Facts

System
Linux kernel
Corpus path
drivers/md/dm-vdo/thread-device.c
Extension
.c
Size
837 bytes
Lines
35
Domain
Driver Families
Bucket
drivers/md
Inferred role
Driver Families: implementation source
Status
source 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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2023 Red Hat
 */

#include "thread-device.h"

/* A registry of threads associated with device id numbers. */
static struct thread_registry device_id_thread_registry;

/* Any registered thread must be unregistered. */
void vdo_register_thread_device_id(struct registered_thread *new_thread,
				   unsigned int *id_ptr)
{
	vdo_register_thread(&device_id_thread_registry, new_thread, id_ptr);
}

void vdo_unregister_thread_device_id(void)
{
	vdo_unregister_thread(&device_id_thread_registry);
}

int vdo_get_thread_device_id(void)
{
	const unsigned int *pointer;

	pointer = vdo_lookup_thread(&device_id_thread_registry);
	return (pointer != NULL) ? *pointer : -1;
}

void vdo_initialize_thread_device_registry(void)
{
	vdo_initialize_thread_registry(&device_id_thread_registry);
}

Annotation

Implementation Notes