drivers/cpuidle/cpuidle-powernv.c

File Facts

System

Linux kernel

Corpus path

drivers/cpuidle/cpuidle-powernv.c

Extension

.c

Size

10590 bytes

Lines

410

Domain

Driver Families

Bucket

drivers/cpuidle

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/moduleparam.h
• linux/cpuidle.h
• linux/cpu.h
• linux/notifier.h
• linux/clockchips.h
• linux/of.h
• linux/slab.h
• asm/machdep.h
• asm/firmware.h
• asm/opal.h
• asm/runlatch.h
• asm/cpuidle.h

Detected Declarations

• struct stop_psscr_table
• function get_snooze_timeout
• function snooze_loop
• function nap_loop
• function fastsleep_loop
• function stop_loop
• function powernv_cpuidle_cpu_online
• function powernv_cpuidle_cpu_dead
• function powernv_cpuidle_driver_init
• function add_powernv_state
• function powernv_add_idle_states
• function powernv_idle_probe
• function powernv_processor_idle_init
• module init powernv_processor_idle_init

Annotated Snippet

device_initcall(powernv_processor_idle_init);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/init.h`, `linux/moduleparam.h`, `linux/cpuidle.h`, `linux/cpu.h`, `linux/notifier.h`, `linux/clockchips.h`.
• Detected declarations: `struct stop_psscr_table`, `function get_snooze_timeout`, `function snooze_loop`, `function nap_loop`, `function fastsleep_loop`, `function stop_loop`, `function powernv_cpuidle_cpu_online`, `function powernv_cpuidle_cpu_dead`, `function powernv_cpuidle_driver_init`, `function add_powernv_state`.
• Atlas domain: Driver Families / drivers/cpuidle.
• 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.