tools/perf/pmu-events/arch/x86/amdzen4/branch.json

Source file repositories/reference/linux-study-clean/tools/perf/pmu-events/arch/x86/amdzen4/branch.json

File Facts

System
Linux kernel
Corpus path
tools/perf/pmu-events/arch/x86/amdzen4/branch.json
Extension
.json
Size
2928 bytes
Lines
83
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.

Dependency Surface

Detected Declarations

Annotated Snippet

[
  {
    "EventName": "bp_l2_btb_correct",
    "EventCode": "0x8b",
    "BriefDescription": "L2 branch prediction overrides existing prediction (speculative)."
  },
  {
    "EventName": "bp_dyn_ind_pred",
    "EventCode": "0x8e",
    "BriefDescription": "Dynamic indirect predictions (branch used the indirect predictor to make a prediction)."
  },
  {
    "EventName": "bp_de_redirect",
    "EventCode": "0x91",
    "BriefDescription": "Instruction decoder corrects the predicted target and resteers the branch predictor."
  },
  {
    "EventName": "ex_ret_brn",
    "EventCode": "0xc2",
    "BriefDescription": "Retired branch instructions (all types of architectural control flow changes, including exceptions and interrupts)."
  },
  {
    "EventName": "ex_ret_brn_misp",
    "EventCode": "0xc3",
    "BriefDescription": "Retired branch instructions mispredicted."
  },
  {
    "EventName": "ex_ret_brn_tkn",
    "EventCode": "0xc4",
    "BriefDescription": "Retired taken branch instructions (all types of architectural control flow changes, including exceptions and interrupts)."
  },
  {
    "EventName": "ex_ret_brn_tkn_misp",
    "EventCode": "0xc5",
    "BriefDescription": "Retired taken branch instructions mispredicted."
  },
  {
    "EventName": "ex_ret_brn_far",
    "EventCode": "0xc6",
    "BriefDescription": "Retired far control transfers (far call/jump/return, IRET, SYSCALL and SYSRET, plus exceptions and interrupts). Far control transfers are not subject to branch prediction."
  },
  {
    "EventName": "ex_ret_near_ret",
    "EventCode": "0xc8",
    "BriefDescription": "Retired near returns (RET or RET Iw)."
  },
  {
    "EventName": "ex_ret_near_ret_mispred",
    "EventCode": "0xc9",
    "BriefDescription": "Retired near returns mispredicted. Each misprediction incurs the same penalty as a mispredicted conditional branch instruction."
  },
  {
    "EventName": "ex_ret_brn_ind_misp",
    "EventCode": "0xca",
    "BriefDescription": "Retired indirect branch instructions mispredicted (only EX mispredicts). Each misprediction incurs the same penalty as a mispredicted conditional branch instruction."
  },
  {
    "EventName": "ex_ret_ind_brch_instr",
    "EventCode": "0xcc",
    "BriefDescription": "Retired indirect branch instructions."
  },
  {
    "EventName": "ex_ret_cond",
    "EventCode": "0xd1",
    "BriefDescription": "Retired conditional branch instructions."
  },
  {
    "EventName": "ex_ret_msprd_brnch_instr_dir_msmtch",
    "EventCode": "0x1c7",
    "BriefDescription": "Retired branch instructions mispredicted due to direction mismatch."

Annotation

Implementation Notes