tools/perf/pmu-events/arch/x86/sapphirerapids/uncore-interconnect.json

Source file repositories/reference/linux-study-clean/tools/perf/pmu-events/arch/x86/sapphirerapids/uncore-interconnect.json

File Facts

System: Linux kernel
Corpus path: tools/perf/pmu-events/arch/x86/sapphirerapids/uncore-interconnect.json
Extension: .json
Size: 310937 bytes
Lines: 7627
Domain: Support Tooling And Documentation
Bucket: tools
Inferred role: Support Tooling And Documentation: configuration, schema, or hardware description
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

[
    {
        "BriefDescription": "Total IRP occupancy of inbound read and write requests to coherent memory.",
        "Counter": "0,1",
        "EventCode": "0x0f",
        "EventName": "UNC_I_CACHE_TOTAL_OCCUPANCY.MEM",
        "Experimental": "1",
        "PerPkg": "1",
        "PublicDescription": "Total IRP occupancy of inbound read and write requests to coherent memory.  This is effectively the sum of read occupancy and write occupancy.",
        "UMask": "0x4",
        "Unit": "IRP"
    },
    {
        "BriefDescription": "IRP Clockticks",
        "Counter": "0,1",
        "EventCode": "0x01",
        "EventName": "UNC_I_CLOCKTICKS",
        "PerPkg": "1",
        "PublicDescription": "Number of IRP clock cycles while the event is enabled",
        "Unit": "IRP"
    },
    {
        "BriefDescription": "FAF RF full",
        "Counter": "0,1",
        "EventCode": "0x17",
        "EventName": "UNC_I_FAF_FULL",
        "PerPkg": "1",
        "Unit": "IRP"
    },
    {
        "BriefDescription": "FAF - request insert from TC.",
        "Counter": "0,1",
        "EventCode": "0x18",
        "EventName": "UNC_I_FAF_INSERTS",
        "PerPkg": "1",
        "Unit": "IRP"
    },
    {
        "BriefDescription": "FAF occupancy",
        "Counter": "0,1",
        "EventCode": "0x19",
        "EventName": "UNC_I_FAF_OCCUPANCY",
        "PerPkg": "1",
        "Unit": "IRP"
    },
    {
        "BriefDescription": "FAF allocation -- sent to ADQ",
        "Counter": "0,1",
        "EventCode": "0x16",
        "EventName": "UNC_I_FAF_TRANSACTIONS",
        "PerPkg": "1",
        "Unit": "IRP"
    },
    {
        "BriefDescription": ": All Inserts Outbound (BL, AK, Snoops)",
        "Counter": "0,1",
        "EventCode": "0x20",
        "EventName": "UNC_I_IRP_ALL.EVICTS",
        "Experimental": "1",
        "PerPkg": "1",
        "UMask": "0x4",
        "Unit": "IRP"
    },
    {
        "BriefDescription": ": All Inserts Inbound (p2p + faf + cset)",
        "Counter": "0,1",
        "EventCode": "0x20",
        "EventName": "UNC_I_IRP_ALL.INBOUND_INSERTS",
        "PerPkg": "1",
        "UMask": "0x1",

Annotation

Atlas domain: Support Tooling And Documentation / tools.
Implementation status: atlas-only.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.