drivers/vdpa/vdpa_sim/vdpa_sim_blk.c

File Facts

System

Linux kernel

Corpus path

drivers/vdpa/vdpa_sim/vdpa_sim_blk.c

Extension

.c

Size

13285 bytes

Lines

520

Domain

Driver Families

Bucket

drivers/vdpa

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/init.h
• linux/module.h
• linux/device.h
• linux/kernel.h
• linux/blkdev.h
• linux/vringh.h
• linux/vdpa.h
• uapi/linux/virtio_blk.h
• vdpa_sim.h

Detected Declarations

• struct vdpasim_blk
• function vdpasim_blk_buffer_lock
• function vdpasim_blk_buffer_unlock
• function vdpasim_blk_check_range
• function vdpasim_blk_handle_req
• function vdpasim_blk_work
• function vdpasim_blk_get_config
• function vdpasim_blk_free
• function vdpasim_blk_dev_add
• function vdpasim_blk_dev_del
• function vdpasim_blk_init
• function vdpasim_blk_exit
• module init vdpasim_blk_init

Annotated Snippet

module_init(vdpasim_blk_init)
module_exit(vdpasim_blk_exit)

MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE(DRV_LICENSE);
MODULE_AUTHOR(DRV_AUTHOR);
MODULE_DESCRIPTION(DRV_DESC);

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/device.h`, `linux/kernel.h`, `linux/blkdev.h`, `linux/vringh.h`, `linux/vdpa.h`, `uapi/linux/virtio_blk.h`.
• Detected declarations: `struct vdpasim_blk`, `function vdpasim_blk_buffer_lock`, `function vdpasim_blk_buffer_unlock`, `function vdpasim_blk_check_range`, `function vdpasim_blk_handle_req`, `function vdpasim_blk_work`, `function vdpasim_blk_get_config`, `function vdpasim_blk_free`, `function vdpasim_blk_dev_add`, `function vdpasim_blk_dev_del`.
• Atlas domain: Driver Families / drivers/vdpa.
• 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.