drivers/hv/hv_util.c

File Facts

System

Linux kernel

Corpus path

drivers/hv/hv_util.c

Extension

.c

Size

20739 bytes

Lines

816

Domain

Driver Families

Bucket

drivers/hv

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.
• 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/kernel.h
• linux/init.h
• linux/module.h
• linux/slab.h
• linux/sysctl.h
• linux/reboot.h
• linux/hyperv.h
• linux/clockchips.h
• linux/ptp_clock_kernel.h
• asm/mshyperv.h
• hyperv_vmbus.h

Detected Declarations

• struct hibernate_work_context
• function send_hibernate_uevent
• function hv_shutdown_init
• function perform_shutdown
• function perform_restart
• function shutdown_onchannelcallback
• function reftime_to_ns
• function hv_get_adj_host_time
• function hv_set_host_time
• function hv_implicit_sync
• function adj_guesttime
• function timesync_onchannelcallback
• function heartbeat_onchannelcallback
• function util_probe
• function util_remove
• function util_suspend
• function util_resume
• function hv_ptp_enable
• function hv_ptp_settime
• function hv_ptp_adjfine
• function hv_ptp_adjtime
• function hv_ptp_gettime
• function hv_timesync_init
• function hv_timesync_cancel_work
• function hv_timesync_pre_suspend
• function hv_timesync_deinit
• function init_hyperv_utils
• function exit_hyperv_utils
• module init init_hyperv_utils

Annotated Snippet

module_init(init_hyperv_utils);
module_exit(exit_hyperv_utils);

MODULE_DESCRIPTION("Hyper-V Utilities");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/init.h`, `linux/module.h`, `linux/slab.h`, `linux/sysctl.h`, `linux/reboot.h`, `linux/hyperv.h`, `linux/clockchips.h`.
• Detected declarations: `struct hibernate_work_context`, `function send_hibernate_uevent`, `function hv_shutdown_init`, `function perform_shutdown`, `function perform_restart`, `function shutdown_onchannelcallback`, `function reftime_to_ns`, `function hv_get_adj_host_time`, `function hv_set_host_time`, `function hv_implicit_sync`.
• Atlas domain: Driver Families / drivers/hv.
• 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.