drivers/hwtracing/coresight/coresight-tpdm.c

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/coresight/coresight-tpdm.c

Extension

.c

Size

38437 bytes

Lines

1579

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.
• 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/amba/bus.h
• linux/bitfield.h
• linux/bitmap.h
• linux/coresight.h
• linux/coresight-pmu.h
• linux/device.h
• linux/err.h
• linux/fs.h
• linux/io.h
• linux/kernel.h
• linux/module.h
• linux/of.h
• coresight-priv.h
• coresight-tpdm.h

Detected Declarations

• function Copyright
• function tpdm_has_cmb_dataset
• function tpdm_has_mcmb_dataset
• function tpdm_simple_dataset_show
• function tpdm_simple_dataset_store
• function tpdm_dsb_is_visible
• function tpdm_cmb_is_visible
• function tpdm_dsb_msr_is_visible
• function tpdm_cmb_msr_is_visible
• function tpdm_mcmb_is_visible
• function tpdm_reset_datasets
• function set_dsb_mode
• function set_dsb_tier
• function set_dsb_msr
• function tpdm_enable_dsb
• function set_cmb_tier
• function set_cmb_msr
• function tpdm_enable_cmb
• function Bit
• function tpdm_enable
• function tpdm_disable_dsb
• function tpdm_disable_cmb
• function __tpdm_disable
• function tpdm_disable
• function tpdm_datasets_setup
• function static_tpdm_datasets_setup
• function reset_dataset_store
• function integration_test_store
• function traceid_show
• function dsb_mode_show
• function dsb_mode_store
• function ctrl_idx_show
• function detections
• function ctrl_val_store
• function ctrl_mask_store
• function enable_ts_show
• function enable_ts_store
• function set_type_show
• function set_type_store
• function dsb_trig_type_show
• function type
• function dsb_trig_ts_show
• function timestamp
• function cmb_mode_show
• function cmb_mode_store
• function cmb_ts_all_show
• function cmb_ts_all_store
• function cmb_trig_ts_show

Annotated Snippet

module_init(tpdm_init);
module_exit(tpdm_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Monitor driver");

Annotation

• Immediate include surface: `linux/amba/bus.h`, `linux/bitfield.h`, `linux/bitmap.h`, `linux/coresight.h`, `linux/coresight-pmu.h`, `linux/device.h`, `linux/err.h`, `linux/fs.h`.
• Detected declarations: `function Copyright`, `function tpdm_has_cmb_dataset`, `function tpdm_has_mcmb_dataset`, `function tpdm_simple_dataset_show`, `function tpdm_simple_dataset_store`, `function tpdm_dsb_is_visible`, `function tpdm_cmb_is_visible`, `function tpdm_dsb_msr_is_visible`, `function tpdm_cmb_msr_is_visible`, `function tpdm_mcmb_is_visible`.
• Atlas domain: Driver Families / drivers/hwtracing.
• 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.