drivers/cpufreq/amd-pstate-ut.c

File Facts

System

Linux kernel

Corpus path

drivers/cpufreq/amd-pstate-ut.c

Extension

.c

Size

15539 bytes

Lines

592

Domain

Driver Families

Bucket

drivers/cpufreq

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bitfield.h
• linux/cpufeature.h
• linux/cpufreq.h
• linux/kernel.h
• linux/module.h
• linux/moduleparam.h
• linux/mm.h
• linux/fs.h
• linux/cleanup.h
• acpi/cppc_acpi.h
• asm/msr.h
• amd-pstate.h

Detected Declarations

• struct amd_pstate_ut_struct
• enum attr_category
• function test_in_list
• function get_shared_mem
• function amd_pstate_ut_acpi_cpc_valid
• function amd_pstate_ut_check_enabled
• function amd_pstate_ut_check_perf
• function for_each_online_cpu
• function amd_pstate_ut_check_freq
• function for_each_online_cpu
• function amd_pstate_set_mode
• function amd_pstate_ut_epp
• function amd_pstate_ut_check_driver
• function attr_in_driver
• function amd_pstate_ut_check_freq_attrs
• function amd_pstate_ut_init
• function amd_pstate_ut_exit
• module init amd_pstate_ut_init

Annotated Snippet

module_init(amd_pstate_ut_init);
module_exit(amd_pstate_ut_exit);

MODULE_AUTHOR("Meng Li <li.meng@amd.com>");
MODULE_DESCRIPTION("AMD P-state driver Test module");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/cpufeature.h`, `linux/cpufreq.h`, `linux/kernel.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/mm.h`, `linux/fs.h`.
• Detected declarations: `struct amd_pstate_ut_struct`, `enum attr_category`, `function test_in_list`, `function get_shared_mem`, `function amd_pstate_ut_acpi_cpc_valid`, `function amd_pstate_ut_check_enabled`, `function amd_pstate_ut_check_perf`, `function for_each_online_cpu`, `function amd_pstate_ut_check_freq`, `function for_each_online_cpu`.
• Atlas domain: Driver Families / drivers/cpufreq.
• 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.