drivers/thermal/intel/x86_pkg_temp_thermal.c

File Facts

System

Linux kernel

Corpus path

drivers/thermal/intel/x86_pkg_temp_thermal.c

Extension

.c

Size

14113 bytes

Lines

535

Domain

Driver Families

Bucket

drivers/thermal

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/module.h
• linux/init.h
• linux/intel_tcc.h
• linux/err.h
• linux/param.h
• linux/device.h
• linux/platform_device.h
• linux/cpu.h
• linux/smp.h
• linux/slab.h
• linux/pm.h
• linux/thermal.h
• linux/debugfs.h
• asm/cpu_device_id.h
• asm/cpuid/api.h
• asm/msr.h
• thermal_interrupt.h

Detected Declarations

• struct zone_device
• function pkg_temp_debugfs_init
• function sys_get_curr_temp
• function sys_set_trip_temp
• function pkg_thermal_rate_control
• function enable_pkg_thres_interrupt
• function disable_pkg_thres_interrupt
• function pkg_temp_thermal_threshold_work_fn
• function pkg_thermal_schedule_work
• function pkg_thermal_notify
• function pkg_temp_thermal_trips_init
• function pkg_temp_thermal_device_add
• function pkg_thermal_cpu_offline
• function pkg_thermal_cpu_online
• function pkg_temp_thermal_init
• function pkg_temp_thermal_exit
• module init pkg_temp_thermal_init

Annotated Snippet

module_init(pkg_temp_thermal_init)

static void __exit pkg_temp_thermal_exit(void)
{
	platform_thermal_package_notify = NULL;
	platform_thermal_package_rate_control = NULL;

	cpuhp_remove_state(pkg_thermal_hp_state);
	debugfs_remove_recursive(debugfs);
	kfree(zones);
}
module_exit(pkg_temp_thermal_exit)

MODULE_IMPORT_NS("INTEL_TCC");
MODULE_DESCRIPTION("X86 PKG TEMP Thermal Driver");
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/intel_tcc.h`, `linux/err.h`, `linux/param.h`, `linux/device.h`, `linux/platform_device.h`, `linux/cpu.h`.
• Detected declarations: `struct zone_device`, `function pkg_temp_debugfs_init`, `function sys_get_curr_temp`, `function sys_set_trip_temp`, `function pkg_thermal_rate_control`, `function enable_pkg_thres_interrupt`, `function disable_pkg_thres_interrupt`, `function pkg_temp_thermal_threshold_work_fn`, `function pkg_thermal_schedule_work`, `function pkg_thermal_notify`.
• Atlas domain: Driver Families / drivers/thermal.
• 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.