tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json
Source file repositories/reference/linux-study-clean/tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json
File Facts
- System
- Linux kernel
- Corpus path
tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json- Extension
.json- Size
- 9822 bytes
- Lines
- 238
- 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
[
{
"MetricExpr": "FETCH_BUBBLE / (4 * CPU_CYCLES)",
"PublicDescription": "Frontend bound L1 topdown metric",
"BriefDescription": "Frontend bound L1 topdown metric",
"DefaultMetricgroupName": "TopdownL1",
"MetricGroup": "Default;TopdownL1",
"MetricName": "frontend_bound"
},
{
"MetricExpr": "(INST_SPEC - INST_RETIRED) / (4 * CPU_CYCLES)",
"PublicDescription": "Bad Speculation L1 topdown metric",
"BriefDescription": "Bad Speculation L1 topdown metric",
"DefaultMetricgroupName": "TopdownL1",
"MetricGroup": "Default;TopdownL1",
"MetricName": "bad_speculation"
},
{
"MetricExpr": "INST_RETIRED / (CPU_CYCLES * 4)",
"PublicDescription": "Retiring L1 topdown metric",
"BriefDescription": "Retiring L1 topdown metric",
"DefaultMetricgroupName": "TopdownL1",
"MetricGroup": "Default;TopdownL1",
"MetricName": "retiring"
},
{
"MetricExpr": "1 - (frontend_bound + bad_speculation + retiring)",
"PublicDescription": "Backend Bound L1 topdown metric",
"BriefDescription": "Backend Bound L1 topdown metric",
"DefaultMetricgroupName": "TopdownL1",
"MetricGroup": "Default;TopdownL1",
"MetricName": "backend_bound"
},
{
"MetricExpr": "armv8_pmuv3_0@event\\=0x201d@ / CPU_CYCLES",
"PublicDescription": "Fetch latency bound L2 topdown metric",
"BriefDescription": "Fetch latency bound L2 topdown metric",
"MetricGroup": "TopdownL2",
"MetricName": "fetch_latency_bound"
},
{
"MetricExpr": "frontend_bound - fetch_latency_bound",
"PublicDescription": "Fetch bandwidth bound L2 topdown metric",
"BriefDescription": "Fetch bandwidth bound L2 topdown metric",
"MetricGroup": "TopdownL2",
"MetricName": "fetch_bandwidth_bound"
},
{
"MetricExpr": "(bad_speculation * BR_MIS_PRED) / (BR_MIS_PRED + armv8_pmuv3_0@event\\=0x2013@)",
"PublicDescription": "Branch mispredicts L2 topdown metric",
"BriefDescription": "Branch mispredicts L2 topdown metric",
"MetricGroup": "TopdownL2",
"MetricName": "branch_mispredicts"
},
{
"MetricExpr": "bad_speculation - branch_mispredicts",
"PublicDescription": "Machine clears L2 topdown metric",
"BriefDescription": "Machine clears L2 topdown metric",
"MetricGroup": "TopdownL2",
"MetricName": "machine_clears"
},
{
"MetricExpr": "(EXE_STALL_CYCLE - (MEM_STALL_ANYLOAD + armv8_pmuv3_0@event\\=0x7005@)) / CPU_CYCLES",
"PublicDescription": "Core bound L2 topdown metric",
"BriefDescription": "Core bound L2 topdown metric",
"MetricGroup": "TopdownL2",
"MetricName": "core_bound"
},
{
"MetricExpr": "(MEM_STALL_ANYLOAD + armv8_pmuv3_0@event\\=0x7005@) / CPU_CYCLES",
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.