drivers/cxl/core/suspend.c

Source file repositories/reference/linux-study-clean/drivers/cxl/core/suspend.c

File Facts

System
Linux kernel
Corpus path
drivers/cxl/core/suspend.c
Extension
.c
Size
496 bytes
Lines
25
Domain
Driver Families
Bucket
drivers/cxl
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2022 Intel Corporation. All rights reserved. */
#include <linux/atomic.h>
#include <linux/export.h>
#include "cxlmem.h"

static atomic_t mem_active;

bool cxl_mem_active(void)
{
	return atomic_read(&mem_active) != 0;
}

void cxl_mem_active_inc(void)
{
	atomic_inc(&mem_active);
}
EXPORT_SYMBOL_NS_GPL(cxl_mem_active_inc, "CXL");

void cxl_mem_active_dec(void)
{
	atomic_dec(&mem_active);
}
EXPORT_SYMBOL_NS_GPL(cxl_mem_active_dec, "CXL");

Annotation

Implementation Notes