tools/perf/pmu-events/arch/x86/skylakex/floating-point.json

Source file repositories/reference/linux-study-clean/tools/perf/pmu-events/arch/x86/skylakex/floating-point.json

File Facts

System: Linux kernel
Corpus path: tools/perf/pmu-events/arch/x86/skylakex/floating-point.json
Extension: .json
Size: 12564 bytes
Lines: 120
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.

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": "Counts once for most SIMD 128-bit packed computational double precision floating-point instructions retired. Counts twice for DPP and FM(N)ADD/SUB instructions retired.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.128B_PACKED_DOUBLE",
        "PublicDescription": "Counts once for most SIMD 128-bit packed computational double precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 2 computation operations, one for each element.  Applies to packed double precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x4"
    },
    {
        "BriefDescription": "Counts once for most SIMD 128-bit packed computational single precision floating-point instruction retired. Counts twice for DPP and FM(N)ADD/SUB instructions retired.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.128B_PACKED_SINGLE",
        "PublicDescription": "Counts once for most SIMD 128-bit packed computational single precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 4 computation operations, one for each element.  Applies to packed single precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT RSQRT RCP DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x8"
    },
    {
        "BriefDescription": "Counts once for most SIMD 256-bit packed double computational precision floating-point instructions retired. Counts twice for DPP and FM(N)ADD/SUB instructions retired.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.256B_PACKED_DOUBLE",
        "PublicDescription": "Counts once for most SIMD 256-bit packed double computational precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 4 computation operations, one for each element.  Applies to packed double precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT FM(N)ADD/SUB.  FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x10"
    },
    {
        "BriefDescription": "Counts once for most SIMD 256-bit packed single computational precision floating-point instructions retired. Counts twice for DPP and FM(N)ADD/SUB instructions retired.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.256B_PACKED_SINGLE",
        "PublicDescription": "Counts once for most SIMD 256-bit packed single computational precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 8 computation operations, one for each element.  Applies to packed single precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT RSQRT RCP DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x20"
    },
    {
        "BriefDescription": "Number of SSE/AVX computational 128-bit packed single and 256-bit packed double precision FP instructions retired; some instructions will count twice as noted below.  Each count represents 2 or/and 4 computation operations, 1 for each element.  Applies to SSE* and AVX* packed single precision and packed double precision FP instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX RCP14 RSQRT14 SQRT DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB count twice as they perform 2 calculations per element.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.4_FLOPS",
        "PublicDescription": "Number of SSE/AVX computational 128-bit packed single precision and 256-bit packed double precision  floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 2 or/and 4 computation operations, one for each element.  Applies to SSE* and AVX* packed single precision floating-point and packed double precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX RCP14 RSQRT14 SQRT DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "1000003",
        "UMask": "0x18"
    },
    {
        "BriefDescription": "Counts number of SSE/AVX computational 512-bit packed double precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 8 computation operations, one for each element.  Applies to SSE* and AVX* packed double precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT RSQRT14 RCP14 FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.512B_PACKED_DOUBLE",
        "PublicDescription": "Number of SSE/AVX computational 512-bit packed double precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 8 computation operations, one for each element.  Applies to SSE* and AVX* packed double precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT RSQRT14 RCP14 FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x40"
    },
    {
        "BriefDescription": "Counts number of SSE/AVX computational 512-bit packed single precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 16 computation operations, one for each element.  Applies to SSE* and AVX* packed single precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT RSQRT14 RCP14 FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.512B_PACKED_SINGLE",
        "PublicDescription": "Number of SSE/AVX computational 512-bit packed single precision floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 16 computation operations, one for each element.  Applies to SSE* and AVX* packed single precision floating-point instructions: ADD SUB MUL DIV MIN MAX SQRT RSQRT14 RCP14 FM(N)ADD/SUB. FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",
        "SampleAfterValue": "2000003",
        "UMask": "0x80"
    },
    {
        "BriefDescription": "Number of SSE/AVX computational 256-bit packed single precision and 512-bit packed double precision  FP instructions retired; some instructions will count twice as noted below.  Each count represents 8 computation operations, 1 for each element.  Applies to SSE* and AVX* packed single precision and double precision FP instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT RSQRT RSQRT14 RCP RCP14 DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB count twice as they perform 2 calculations per element.",
        "Counter": "0,1,2,3",
        "EventCode": "0xC7",
        "EventName": "FP_ARITH_INST_RETIRED.8_FLOPS",
        "PublicDescription": "Number of SSE/AVX computational 256-bit packed single precision and 512-bit packed double precision  floating-point instructions retired; some instructions will count twice as noted below.  Each count represents 8 computation operations, one for each element.  Applies to SSE* and AVX* packed single precision and double precision floating-point instructions: ADD SUB HADD HSUB SUBADD MUL DIV MIN MAX SQRT RSQRT RSQRT14 RCP RCP14 DPP FM(N)ADD/SUB.  DPP and FM(N)ADD/SUB instructions count twice as they perform 2 calculations per element. The DAZ and FTZ flags in the MXCSR register need to be set when using these events.",

Annotation

Atlas domain: Support Tooling And Documentation / tools.
Implementation status: atlas-only.

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.