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

File Facts

System

Linux kernel

Corpus path

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

Extension

.json

Size

8272 bytes

Lines

276

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": "Clockticks of the mesh to memory (B2CMI)",
        "Counter": "0,1,2,3",
        "EventCode": "0x01",
        "EventName": "UNC_B2CMI_CLOCKTICKS",
        "PerPkg": "1",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Counts the number of times B2CMI egress did D2C (direct to core)",
        "Counter": "0,1,2,3",
        "EventCode": "0x16",
        "EventName": "UNC_B2CMI_DIRECT2CORE_TAKEN",
        "PerPkg": "1",
        "UMask": "0x1",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Counts the number of times D2C wasn't honoured even though the incoming request had d2c set for non cisgress txn",
        "Counter": "0,1,2,3",
        "EventCode": "0x18",
        "EventName": "UNC_B2CMI_DIRECT2CORE_TXN_OVERRIDE",
        "PerPkg": "1",
        "UMask": "0x1",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Counts any read",
        "Counter": "0,1,2,3",
        "EventCode": "0x24",
        "EventName": "UNC_B2CMI_IMC_READS.ALL",
        "PerPkg": "1",
        "UMask": "0x104",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Counts normal reads issue to CMI",
        "Counter": "0,1,2,3",
        "EventCode": "0x24",
        "EventName": "UNC_B2CMI_IMC_READS.NORMAL",
        "PerPkg": "1",
        "UMask": "0x101",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Counts reads to 1lm non persistent memory regions",
        "Counter": "0,1,2,3",
        "EventCode": "0x24",
        "EventName": "UNC_B2CMI_IMC_READS.TO_DDR_AS_MEM",
        "Experimental": "1",
        "PerPkg": "1",
        "UMask": "0x108",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "All Writes - All Channels",
        "Counter": "0,1,2,3",
        "EventCode": "0x25",
        "EventName": "UNC_B2CMI_IMC_WRITES.ALL",
        "PerPkg": "1",
        "UMask": "0x110",
        "Unit": "B2CMI"
    },
    {
        "BriefDescription": "Full Non-ISOCH - All Channels",
        "Counter": "0,1,2,3",
        "EventCode": "0x25",
        "EventName": "UNC_B2CMI_IMC_WRITES.FULL",
        "PerPkg": "1",

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.