drivers/hwtracing/stm/p_sys-t.c

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/stm/p_sys-t.c

Extension

.c

Size

11534 bytes

Lines

462

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/configfs.h
• linux/module.h
• linux/device.h
• linux/slab.h
• linux/uuid.h
• linux/stm.h
• stm.h

Detected Declarations

• struct sys_t_policy_node
• struct sys_t_output
• enum sys_t_message_type
• enum sys_t_message_severity
• enum sys_t_message_build_subtype
• enum sys_t_message_clock_subtype
• enum sys_t_message_string_subtype
• enum sys_t_message_sbd_subtype
• function sys_t_policy_node_init
• function sys_t_output_open
• function sys_t_output_close
• function sys_t_policy_uuid_show
• function sys_t_policy_uuid_store
• function sys_t_policy_do_len_show
• function sys_t_policy_do_len_store
• function sys_t_policy_ts_interval_show
• function sys_t_policy_ts_interval_store
• function sys_t_policy_clocksync_interval_show
• function sys_t_policy_clocksync_interval_store
• function sys_t_need_ts
• function sys_t_need_clock_sync
• function sys_t_clock_sync
• function sys_t_header
• function sys_t_write_data
• function sys_t_write
• function sys_t_stm_init
• function sys_t_stm_exit
• module init sys_t_stm_init

Annotated Snippet

module_init(sys_t_stm_init);
module_exit(sys_t_stm_exit);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("MIPI SyS-T STM framing protocol driver");
MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@linux.intel.com>");

Annotation

• Immediate include surface: `linux/configfs.h`, `linux/module.h`, `linux/device.h`, `linux/slab.h`, `linux/uuid.h`, `linux/stm.h`, `stm.h`.
• Detected declarations: `struct sys_t_policy_node`, `struct sys_t_output`, `enum sys_t_message_type`, `enum sys_t_message_severity`, `enum sys_t_message_build_subtype`, `enum sys_t_message_clock_subtype`, `enum sys_t_message_string_subtype`, `enum sys_t_message_sbd_subtype`, `function sys_t_policy_node_init`, `function sys_t_output_open`.
• 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.