drivers/hwmon/coretemp.c

File Facts

System

Linux kernel

Corpus path

drivers/hwmon/coretemp.c

Extension

.c

Size

22364 bytes

Lines

838

Domain

Driver Families

Bucket

drivers/hwmon

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/slab.h
• linux/jiffies.h
• linux/hwmon.h
• linux/sysfs.h
• linux/hwmon-sysfs.h
• linux/err.h
• linux/mutex.h
• linux/list.h
• linux/platform_device.h
• linux/cpu.h
• linux/smp.h
• linux/moduleparam.h
• linux/pci.h
• asm/msr.h
• linux/processor.h
• asm/cpu_device_id.h
• linux/sched/isolation.h

Detected Declarations

• struct temp_data
• struct platform_data
• struct tjmax_pci
• struct tjmax
• struct tjmax_model
• enum coretemp_attr_index
• function is_pkg_temp_data
• function adjust_tjmax
• function get_tjmax
• function get_ttarget
• function show_label
• function show_crit_alarm
• function show_tjmax
• function show_ttarget
• function show_temp
• function create_core_attrs
• function chk_ucode_version
• function D0
• function init_temp_data
• function destroy_temp_data
• function create_core_data
• function coretemp_add_core
• function coretemp_remove_core
• function coretemp_device_add
• function coretemp_device_remove
• function coretemp_cpu_online
• function coretemp_cpu_offline
• function coretemp_init
• function coretemp_exit
• module init coretemp_init

Annotated Snippet

module_init(coretemp_init)

static void __exit coretemp_exit(void)
{
	int i;

	cpuhp_remove_state(coretemp_hp_online);
	for (i = 0; i < max_zones; i++)
		coretemp_device_remove(i);
	kfree(zone_devices);
}
module_exit(coretemp_exit)

MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
MODULE_DESCRIPTION("Intel Core temperature monitor");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/slab.h`, `linux/jiffies.h`, `linux/hwmon.h`, `linux/sysfs.h`, `linux/hwmon-sysfs.h`, `linux/err.h`.
• Detected declarations: `struct temp_data`, `struct platform_data`, `struct tjmax_pci`, `struct tjmax`, `struct tjmax_model`, `enum coretemp_attr_index`, `function is_pkg_temp_data`, `function adjust_tjmax`, `function get_tjmax`, `function get_ttarget`.
• Atlas domain: Driver Families / drivers/hwmon.
• 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.