drivers/ntb/test/ntb_msi_test.c

File Facts

System

Linux kernel

Corpus path

drivers/ntb/test/ntb_msi_test.c

Extension

.c

Size

9675 bytes

Lines

433

Domain

Driver Families

Bucket

drivers/ntb

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/module.h
• linux/debugfs.h
• linux/ntb.h
• linux/pci.h
• linux/radix-tree.h
• linux/workqueue.h

Detected Declarations

• struct ntb_msit_ctx
• struct ntb_msit_isr_ctx
• struct ntb_msit_peer
• function ntb_msit_isr
• function ntb_msit_setup_work
• function ntb_msit_desc_changed
• function ntb_msit_link_event
• function ntb_msit_copy_peer_desc
• function ntb_msit_db_event
• function ntb_msit_dbgfs_trigger
• function ntb_msit_dbgfs_port_get
• function ntb_msit_dbgfs_count_get
• function ntb_msit_dbgfs_ready_get
• function ntb_msit_dbgfs_ready_set
• function ntb_msit_dbgfs_occurrences_get
• function ntb_msit_dbgfs_local_port_get
• function ntb_msit_create_dbgfs
• function ntb_msit_remove_dbgfs
• function ntb_msit_probe
• function ntb_msit_remove
• function ntb_msit_init
• function ntb_msit_exit
• module init ntb_msit_init

Annotated Snippet

module_init(ntb_msit_init);

static void __exit ntb_msit_exit(void)
{
	ntb_unregister_client(&ntb_msit_client);
	debugfs_remove_recursive(ntb_msit_dbgfs_topdir);
}
module_exit(ntb_msit_exit);

Annotation

• Immediate include surface: `linux/module.h`, `linux/debugfs.h`, `linux/ntb.h`, `linux/pci.h`, `linux/radix-tree.h`, `linux/workqueue.h`.
• Detected declarations: `struct ntb_msit_ctx`, `struct ntb_msit_isr_ctx`, `struct ntb_msit_peer`, `function ntb_msit_isr`, `function ntb_msit_setup_work`, `function ntb_msit_desc_changed`, `function ntb_msit_link_event`, `function ntb_msit_copy_peer_desc`, `function ntb_msit_db_event`, `function ntb_msit_dbgfs_trigger`.
• Atlas domain: Driver Families / drivers/ntb.
• Implementation status: integration implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.