drivers/tty/serial/kgdboc.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/kgdboc.c

Extension

.c

Size

16775 bytes

Lines

650

Domain

Driver Families

Bucket

drivers/tty

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/kernel.h
• linux/ctype.h
• linux/kgdb.h
• linux/kdb.h
• linux/tty.h
• linux/console.h
• linux/vt_kern.h
• linux/input.h
• linux/irq_work.h
• linux/module.h
• linux/platform_device.h
• linux/serial_core.h

Detected Declarations

• function kgdboc_reset_connect
• function kgdboc_reset_disconnect
• function kgdboc_restore_input_helper
• function kgdboc_queue_restore_input_helper
• function kgdboc_restore_input
• function kgdboc_register_kbd
• function kgdboc_unregister_kbd
• function cleanup_earlycon
• function cleanup_earlycon
• function configure_kgdboc
• function kgdboc_probe
• function init_kgdboc
• function exit_kgdboc
• function kgdboc_get_char
• function kgdboc_put_char
• function param_set_kgdboc_var
• function kgdboc_pre_exp_handler
• function kgdboc_post_exp_handler
• function kgdboc_option_setup
• function kgdboc_early_init
• function kgdboc_earlycon_get_char
• function kgdboc_earlycon_put_char
• function kgdboc_earlycon_pre_exp_handler
• function kgdboc_earlycon_deferred_exit
• function kgdboc_earlycon_deinit
• function kgdboc_earlycon_init
• function kgdboc_earlycon_late_init
• module init init_kgdboc

Annotated Snippet

module_init(init_kgdboc);
module_exit(exit_kgdboc);
module_param_call(kgdboc, param_set_kgdboc_var, param_get_string, &kps, 0644);
MODULE_PARM_DESC(kgdboc, "<serial_device>[,baud]");
MODULE_DESCRIPTION("KGDB Console TTY Driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/ctype.h`, `linux/kgdb.h`, `linux/kdb.h`, `linux/tty.h`, `linux/console.h`, `linux/vt_kern.h`, `linux/input.h`.
• Detected declarations: `function kgdboc_reset_connect`, `function kgdboc_reset_disconnect`, `function kgdboc_restore_input_helper`, `function kgdboc_queue_restore_input_helper`, `function kgdboc_restore_input`, `function kgdboc_register_kbd`, `function kgdboc_unregister_kbd`, `function cleanup_earlycon`, `function cleanup_earlycon`, `function configure_kgdboc`.
• Atlas domain: Driver Families / drivers/tty.
• 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.