drivers/hwtracing/intel_th/pti.c

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/intel_th/pti.c

Extension

.c

Size

7224 bytes

Lines

344

Domain

Driver Families

Bucket

drivers/hwtracing

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.
• 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/types.h
• linux/module.h
• linux/device.h
• linux/sizes.h
• linux/printk.h
• linux/slab.h
• linux/mm.h
• linux/io.h
• intel_th.h
• pti.h

Detected Declarations

• struct pti_device
• function pti_width_mode
• function mode_show
• function mode_store
• function freerunning_clock_show
• function freerunning_clock_store
• function clock_divider_show
• function clock_divider_store
• function intel_th_pti_activate
• function intel_th_pti_deactivate
• function read_hw_config
• function intel_th_pti_probe
• function intel_th_pti_remove
• function lpp_dest_show
• function lpp_dest_store
• function intel_th_pti_lpp_init
• function intel_th_pti_lpp_exit
• module init intel_th_pti_lpp_init

Annotated Snippet

module_init(intel_th_pti_lpp_init);

static void __exit intel_th_pti_lpp_exit(void)
{
	intel_th_driver_unregister(&intel_th_pti_driver);
	intel_th_driver_unregister(&intel_th_lpp_driver);
}

module_exit(intel_th_pti_lpp_exit);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel(R) Trace Hub PTI/LPP output driver");
MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@linux.intel.com>");

Annotation

• Immediate include surface: `linux/types.h`, `linux/module.h`, `linux/device.h`, `linux/sizes.h`, `linux/printk.h`, `linux/slab.h`, `linux/mm.h`, `linux/io.h`.
• Detected declarations: `struct pti_device`, `function pti_width_mode`, `function mode_show`, `function mode_store`, `function freerunning_clock_show`, `function freerunning_clock_store`, `function clock_divider_show`, `function clock_divider_store`, `function intel_th_pti_activate`, `function intel_th_pti_deactivate`.
• Atlas domain: Driver Families / drivers/hwtracing.
• 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.