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perf jevents: Add itlb metric group for AMD

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Add metrics that give an overview and details of the l1 itlb (zen1,
zen2, zen3) and l2 itlb (all zens).

Reviewed-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Benjamin Gray <bgray@linux.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xu Yang <xu.yang_2@nxp.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2026-01-27 10:44:38 -08:00 committed by Arnaldo Carvalho de Melo
parent 78067ae268
commit e596f32966
1 changed files with 49 additions and 0 deletions
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49
tools/perf/pmu-events/amd_metrics.py
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@ -122,6 +122,54 @@ def AmdBr():
description="breakdown of retired branch instructions")
def AmdItlb():
global _zen_model
l2h = Event("bp_l1_tlb_miss_l2_tlb_hit", "bp_l1_tlb_miss_l2_hit")
l2m = Event("l2_itlb_misses")
l2r = l2h + l2m
itlb_l1_mg = None
l1m = l2r
if _zen_model <= 3:
l1r = Event("ic_fw32")
l1h = max(l1r - l1m, 0)
itlb_l1_mg = MetricGroup("lpm_itlb_l1", [
Metric("lpm_itlb_l1_hits",
"L1 ITLB hits as a perecentage of L1 ITLB accesses.",
d_ratio(l1h, l1h + l1m), "100%"),
Metric("lpm_itlb_l1_miss",
"L1 ITLB misses as a perecentage of L1 ITLB accesses.",
d_ratio(l1m, l1h + l1m), "100%"),
Metric("lpm_itlb_l1_reqs",
"The number of 32B fetch windows transferred from IC pipe to DE "
"instruction decoder per second.", d_ratio(
l1r, interval_sec),
"windows/sec"),
])
return MetricGroup("lpm_itlb", [
MetricGroup("lpm_itlb_ov", [
Metric("lpm_itlb_ov_insn_bt_l1_miss",
"Number of instructions between l1 misses", d_ratio(
ins, l1m), "insns"),
Metric("lpm_itlb_ov_insn_bt_l2_miss",
"Number of instructions between l2 misses", d_ratio(
ins, l2m), "insns"),
]),
itlb_l1_mg,
MetricGroup("lpm_itlb_l2", [
Metric("lpm_itlb_l2_hits",
"L2 ITLB hits as a percentage of all L2 ITLB accesses.",
d_ratio(l2h, l2r), "100%"),
Metric("lpm_itlb_l2_miss",
"L2 ITLB misses as a percentage of all L2 ITLB accesses.",
d_ratio(l2m, l2r), "100%"),
Metric("lpm_itlb_l2_reqs", "ITLB accesses per second.",
d_ratio(l2r, interval_sec), "accesses/sec"),
]),
], description="Instruction TLB breakdown")
def AmdUpc() -> Metric:
ops = Event("ex_ret_ops", "ex_ret_cops")
upc = d_ratio(ops, smt_cycles)
@ -188,6 +236,7 @@ def main() -> None:
all_metrics = MetricGroup("", [
AmdBr(),
AmdItlb(),
AmdUpc(),
Idle(),
Rapl(),