include/acpi/processor.h

File Facts

System

Linux kernel

Corpus path

include/acpi/processor.h

Extension

.h

Size

12032 bytes

Lines

452

Domain

Repository Root And Misc

Bucket

include

Inferred role

Repository Root And Misc: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

• Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/cpu.h
• linux/cpufreq.h
• linux/pm_qos.h
• linux/printk.h
• linux/sched.h
• linux/smp.h
• linux/thermal.h
• linux/types.h
• linux/workqueue.h
• asm/acpi.h

Detected Declarations

• struct acpi_processor_cx
• struct acpi_power_register
• struct acpi_processor_cx
• struct acpi_lpi_state
• struct acpi_processor_power
• struct acpi_psd_package
• struct acpi_pct_register
• struct acpi_processor_px
• struct acpi_processor_performance
• struct acpi_tsd_package
• struct acpi_ptc_register
• struct acpi_processor_tx_tss
• struct acpi_processor_tx
• struct acpi_processor
• struct acpi_processor_throttling
• struct acpi_processor_lx
• struct acpi_processor_limit
• struct acpi_processor_flags
• struct acpi_processor
• struct acpi_processor_errata
• function acpi_processor_power_init_bm_check
• function acpi_processor_ffh_cstate_probe
• function acpi_processor_ffh_cstate_enter
• function acpi_processor_ffh_play_dead
• function call_on_cpu
• function acpi_processor_ignore_ppc_init
• function acpi_processor_ppc_init
• function acpi_processor_ppc_exit
• function acpi_processor_ppc_has_changed
• function acpi_processor_get_bios_limit
• function acpi_cppc_processor_probe
• function acpi_cppc_processor_exit
• function acpi_processor_tstate_has_changed
• function acpi_processor_get_throttling_info
• function acpi_processor_set_throttling
• function acpi_processor_reevaluate_tstate
• function acpi_thermal_cpufreq_init
• function acpi_thermal_cpufreq_exit

Annotated Snippet

extern const struct file_operations acpi_processor_throttling_fops;
extern void acpi_processor_throttling_init(void);
#else
static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
{
	return 0;
}

static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
					 int state, bool force)
{
	return -ENODEV;
}

static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
			bool is_dead) {}

static inline void acpi_processor_throttling_init(void) {}
#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */

/* in processor_idle.c */
#ifdef CONFIG_ACPI_PROCESSOR_IDLE
void acpi_processor_power_init(struct acpi_processor *pr);
void acpi_processor_power_exit(struct acpi_processor *pr);
int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
int acpi_processor_hotplug(struct acpi_processor *pr);
void acpi_processor_register_idle_driver(void);
void acpi_processor_unregister_idle_driver(void);
int acpi_processor_ffh_lpi_probe(unsigned int cpu);
int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi);
#endif /* CONFIG_ACPI_PROCESSOR_IDLE */

/* in processor_thermal.c */
int acpi_processor_thermal_init(struct acpi_processor *pr,
				struct acpi_device *device);
void acpi_processor_thermal_exit(struct acpi_processor *pr,
				 struct acpi_device *device);
extern const struct thermal_cooling_device_ops processor_cooling_ops;
#ifdef CONFIG_CPU_FREQ
void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy);
void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy);
#else
static inline void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy)
{
	return;
}
static inline void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy)
{
	return;
}
#endif	/* CONFIG_CPU_FREQ */

void acpi_processor_init_invariance_cppc(void);

#endif

Annotation

• Immediate include surface: `linux/cpu.h`, `linux/cpufreq.h`, `linux/pm_qos.h`, `linux/printk.h`, `linux/sched.h`, `linux/smp.h`, `linux/thermal.h`, `linux/types.h`.
• Detected declarations: `struct acpi_processor_cx`, `struct acpi_power_register`, `struct acpi_processor_cx`, `struct acpi_lpi_state`, `struct acpi_processor_power`, `struct acpi_psd_package`, `struct acpi_pct_register`, `struct acpi_processor_px`, `struct acpi_processor_performance`, `struct acpi_tsd_package`.
• Atlas domain: Repository Root And Misc / include.
• Implementation status: pattern implementation candidate.

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.