drivers/platform/x86/intel/pmt/telemetry.c

File Facts

System

Linux kernel

Corpus path

drivers/platform/x86/intel/pmt/telemetry.c

Extension

.c

Size

10691 bytes

Lines

444

Domain

Driver Families

Bucket

drivers/platform

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/auxiliary_bus.h
• linux/bitops.h
• linux/cleanup.h
• linux/err.h
• linux/intel_pmt_features.h
• linux/intel_vsec.h
• linux/kernel.h
• linux/kref.h
• linux/module.h
• linux/mutex.h
• linux/overflow.h
• linux/pci.h
• linux/slab.h
• linux/types.h
• linux/uaccess.h
• linux/xarray.h
• class.h

Detected Declarations

• struct pmt_telem_priv
• enum telem_type
• function pmt_telem_region_overlaps
• function pmt_telem_header_decode
• function pmt_telem_add_endpoint
• function pmt_telem_ep_release
• function pmt_telem_get_next_endpoint
• function pmt_telem_unregister_endpoint
• function pmt_telem_get_endpoint_info
• function pmt_copy_region
• function pmt_feature_group_release
• function intel_pmt_put_feature_group
• function pmt_telem_read
• function pmt_telem_read32
• function pmt_telem_find_and_register_endpoint
• function pmt_telem_remove
• function pmt_telem_probe
• function pmt_telem_init
• function pmt_telem_exit
• module init pmt_telem_init
• export intel_pmt_get_regions_by_feature
• export intel_pmt_put_feature_group

Annotated Snippet

module_init(pmt_telem_init);

static void __exit pmt_telem_exit(void)
{
	auxiliary_driver_unregister(&pmt_telem_aux_driver);
	xa_destroy(&telem_array);
}
module_exit(pmt_telem_exit);

MODULE_AUTHOR("David E. Box <david.e.box@linux.intel.com>");
MODULE_DESCRIPTION("Intel PMT Telemetry driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("INTEL_PMT");
MODULE_IMPORT_NS("INTEL_VSEC");

Annotation

• Immediate include surface: `linux/auxiliary_bus.h`, `linux/bitops.h`, `linux/cleanup.h`, `linux/err.h`, `linux/intel_pmt_features.h`, `linux/intel_vsec.h`, `linux/kernel.h`, `linux/kref.h`.
• Detected declarations: `struct pmt_telem_priv`, `enum telem_type`, `function pmt_telem_region_overlaps`, `function pmt_telem_header_decode`, `function pmt_telem_add_endpoint`, `function pmt_telem_ep_release`, `function pmt_telem_get_next_endpoint`, `function pmt_telem_unregister_endpoint`, `function pmt_telem_get_endpoint_info`, `function pmt_copy_region`.
• Atlas domain: Driver Families / drivers/platform.
• 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.