drivers/dax/kmem.c

File Facts

System

Linux kernel

Corpus path

drivers/dax/kmem.c

Extension

.c

Size

8315 bytes

Lines

320

Domain

Driver Families

Bucket

drivers/dax

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.
• 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/memremap.h
• linux/pagemap.h
• linux/memory.h
• linux/module.h
• linux/device.h
• linux/slab.h
• linux/dax.h
• linux/fs.h
• linux/mm.h
• linux/mman.h
• linux/memory-tiers.h
• linux/memory_hotplug.h
• linux/string_helpers.h
• dax-private.h
• bus.h

Detected Declarations

• struct dax_kmem_data
• function dax_kmem_range
• function kmem_put_memory_types
• function dev_dax_kmem_probe
• function dev_dax_kmem_remove
• function dev_dax_kmem_remove
• function dax_kmem_init
• function dax_kmem_exit
• module init dax_kmem_init

Annotated Snippet

module_init(dax_kmem_init);
module_exit(dax_kmem_exit);
MODULE_ALIAS_DAX_DEVICE(0);

Annotation

• Immediate include surface: `linux/memremap.h`, `linux/pagemap.h`, `linux/memory.h`, `linux/module.h`, `linux/device.h`, `linux/slab.h`, `linux/dax.h`, `linux/fs.h`.
• Detected declarations: `struct dax_kmem_data`, `function dax_kmem_range`, `function kmem_put_memory_types`, `function dev_dax_kmem_probe`, `function dev_dax_kmem_remove`, `function dev_dax_kmem_remove`, `function dax_kmem_init`, `function dax_kmem_exit`, `module init dax_kmem_init`.
• Atlas domain: Driver Families / drivers/dax.
• Implementation status: integration 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.