drivers/perf/arm_cspmu/nvidia_cspmu.c

File Facts

System

Linux kernel

Corpus path

drivers/perf/arm_cspmu/nvidia_cspmu.c

Extension

.c

Size

30322 bytes

Lines

1075

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.
• 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/io.h
• linux/module.h
• linux/property.h
• linux/topology.h
• arm_cspmu.h

Detected Declarations

• struct nv_cspmu_ctx
• struct pcie_tgt_addr_filter
• struct pcie_tgt_data
• struct nv_cspmu_match
• enum nv_cspmu_name_fmt
• function nv_cspmu_get_event_attrs
• function nv_cspmu_get_format_attrs
• function nv_cspmu_get_name
• function nv_cspmu_get_inst_id
• function nv_cspmu_get_inst_id
• function nv_cspmu_event_filter
• function nv_cspmu_event_filter2
• function nv_cspmu_set_ev_filter
• function nv_cspmu_reset_ev_filter
• function nv_cspmu_set_cc_filter
• function ucf_pmu_event_filter
• function pcie_v2_pmu_bdf_val_en
• function pcie_v2_pmu_event_filter
• function pcie_v2_pmu_validate_event
• function pcie_tgt_init_data
• function pcie_tgt_init_data
• function pcie_tgt_find_addr_idx
• function pcie_tgt_pmu_event_filter
• function pcie_tgt_pmu_addr_en
• function pcie_tgt_pmu_port_filter
• function pcie_tgt_pmu_dst_addr_base
• function pcie_tgt_pmu_dst_addr_mask
• function pcie_tgt_pmu_validate_event
• function pcie_tgt_pmu_config_addr_filter
• function pcie_tgt_pmu_set_ev_filter
• function pcie_tgt_pmu_reset_ev_filter
• function pcie_tgt_pmu_event_type
• function pcie_tgt_pmu_is_cycle_counter_event
• function nv_cspmu_init_ops
• function nvidia_cspmu_init
• function nvidia_cspmu_exit
• module init nvidia_cspmu_init

Annotated Snippet

module_init(nvidia_cspmu_init);
module_exit(nvidia_cspmu_exit);

MODULE_DESCRIPTION("NVIDIA Coresight Architecture Performance Monitor Driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/io.h`, `linux/module.h`, `linux/property.h`, `linux/topology.h`, `arm_cspmu.h`.
• Detected declarations: `struct nv_cspmu_ctx`, `struct pcie_tgt_addr_filter`, `struct pcie_tgt_data`, `struct nv_cspmu_match`, `enum nv_cspmu_name_fmt`, `function nv_cspmu_get_event_attrs`, `function nv_cspmu_get_format_attrs`, `function nv_cspmu_get_name`, `function nv_cspmu_get_inst_id`, `function nv_cspmu_get_inst_id`.
• Atlas domain: Driver Families / drivers/perf.
• 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.