drivers/perf/hisilicon/hisi_uncore_noc_pmu.c

File Facts

System

Linux kernel

Corpus path

drivers/perf/hisilicon/hisi_uncore_noc_pmu.c

Extension

.c

Size

13318 bytes

Lines

444

Domain

Driver Families

Bucket

drivers/perf

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.
• 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/bitops.h
• linux/cpuhotplug.h
• linux/device.h
• linux/io.h
• linux/mod_devicetable.h
• linux/module.h
• linux/platform_device.h
• linux/property.h
• linux/sysfs.h
• hisi_uncore_pmu.h

Detected Declarations

• struct hisi_noc_pmu_regs
• function hisi_noc_pmu_check_global_filter
• function hisi_noc_pmu_write_evtype
• function hisi_noc_pmu_get_event_idx
• function hisi_noc_pmu_read_counter
• function hisi_noc_pmu_write_counter
• function hisi_noc_pmu_enable_counter
• function hisi_noc_pmu_disable_counter
• function hisi_noc_pmu_enable_counter_int
• function hisi_noc_pmu_stop_counters
• function hisi_noc_pmu_get_int_status
• function hisi_noc_pmu_clear_int_status
• function hisi_noc_pmu_enable_filter
• function hisi_noc_pmu_disable_filter
• function hisi_noc_pmu_dev_init
• function hisi_noc_pmu_remove_cpuhp_instance
• function hisi_noc_pmu_unregister_pmu
• function hisi_noc_pmu_probe
• function hisi_noc_pmu_module_init
• function hisi_noc_pmu_module_exit
• module init hisi_noc_pmu_module_init

Annotated Snippet

module_init(hisi_noc_pmu_module_init);

static void __exit hisi_noc_pmu_module_exit(void)
{
	platform_driver_unregister(&hisi_noc_pmu_driver);
	cpuhp_remove_multi_state(hisi_noc_pmu_cpuhp_state);
}
module_exit(hisi_noc_pmu_module_exit);

MODULE_IMPORT_NS("HISI_PMU");
MODULE_DESCRIPTION("HiSilicon SoC Uncore NoC PMU driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Yicong Yang <yangyicong@hisilicon.com>");

Annotation

• Immediate include surface: `linux/bitops.h`, `linux/cpuhotplug.h`, `linux/device.h`, `linux/io.h`, `linux/mod_devicetable.h`, `linux/module.h`, `linux/platform_device.h`, `linux/property.h`.
• Detected declarations: `struct hisi_noc_pmu_regs`, `function hisi_noc_pmu_check_global_filter`, `function hisi_noc_pmu_write_evtype`, `function hisi_noc_pmu_get_event_idx`, `function hisi_noc_pmu_read_counter`, `function hisi_noc_pmu_write_counter`, `function hisi_noc_pmu_enable_counter`, `function hisi_noc_pmu_disable_counter`, `function hisi_noc_pmu_enable_counter_int`, `function hisi_noc_pmu_stop_counters`.
• Atlas domain: Driver Families / drivers/perf.
• Implementation status: integration 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.