drivers/cpufreq/powernow-k6.c

File Facts

System

Linux kernel

Corpus path

drivers/cpufreq/powernow-k6.c

Extension

.c

Size

8216 bytes

Lines

310

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/kernel.h
• linux/module.h
• linux/init.h
• linux/cpufreq.h
• linux/ioport.h
• linux/timex.h
• linux/io.h
• asm/cpu_device_id.h
• asm/msr.h

Detected Declarations

• function powernow_k6_get_cpu_multiplier
• function powernow_k6_set_cpu_multiplier
• function powernow_k6_target
• function powernow_k6_cpu_init
• function cpufreq_for_each_entry
• function powernow_k6_cpu_exit
• function powernow_k6_get
• function powernow_k6_init
• function powernow_k6_exit
• module init powernow_k6_init

Annotated Snippet

module_init(powernow_k6_init);
module_exit(powernow_k6_exit);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/cpufreq.h`, `linux/ioport.h`, `linux/timex.h`, `linux/io.h`, `asm/cpu_device_id.h`.
• Detected declarations: `function powernow_k6_get_cpu_multiplier`, `function powernow_k6_set_cpu_multiplier`, `function powernow_k6_target`, `function powernow_k6_cpu_init`, `function cpufreq_for_each_entry`, `function powernow_k6_cpu_exit`, `function powernow_k6_get`, `function powernow_k6_init`, `function powernow_k6_exit`, `module init powernow_k6_init`.
• 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.