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As events may be missing a TryEvent function will give None if an event is missing. To workaround missing JSON events for cortex-a53, sysfs encodings are used. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/arm64_metrics.py | 145 ++++++++++++++++++++++++- 1 file changed, 142 insertions(+), 3 deletions(-) diff --git a/tools/perf/pmu-events/arm64_metrics.py b/tools/perf/pmu-events= /arm64_metrics.py index 7cd0ebc0bd80..0dcf5236ea1f 100755 --- a/tools/perf/pmu-events/arm64_metrics.py +++ b/tools/perf/pmu-events/arm64_metrics.py @@ -1,10 +1,11 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) -from metric import (JsonEncodeMetric, JsonEncodeMetricGroupDescriptions, L= oadEvents, - MetricGroup) +from metric import (d_ratio, Event, JsonEncodeMetric, JsonEncodeMetricGrou= pDescriptions, + LoadEvents, Metric, MetricGroup) import argparse import json import os +from typing import Optional =20 parser =3D argparse.ArgumentParser(description=3D"ARM perf json generator") parser.add_argument("-metricgroups", help=3D"Generate metricgroups data", = action=3D'store_true') @@ -15,7 +16,145 @@ args =3D parser.parse_args() directory =3D f"{os.path.dirname(os.path.realpath(__file__))}/arch/arm64/{= args.vendor}/{args.model}/" LoadEvents(directory) =20 -all_metrics =3D MetricGroup("",[]) +def Arm64Topdown() -> MetricGroup: + """Returns a MetricGroup representing ARM64 topdown like metrics.""" + def TryEvent(name: str) -> Optional[Event]: + # Skip an event if not in the json files. + try: + return Event(name) + except: + return None + # ARM models like a53 lack JSON for INST_RETIRED but have the + # architetural standard event in sysfs. Use the PMU name to identify + # the sysfs event. + pmu_name =3D f'armv8_{args.model.replace("-", "_")}' + ins =3D Event("instructions") + ins_ret =3D Event("INST_RETIRED", f"{pmu_name}/inst_retired/") + cycles =3D Event("cycles") + stall_fe =3D TryEvent("STALL_FRONTEND") + stall_be =3D TryEvent("STALL_BACKEND") + br_ret =3D TryEvent("BR_RETIRED") + br_mp_ret =3D TryEvent("BR_MIS_PRED_RETIRED") + dtlb_walk =3D TryEvent("DTLB_WALK") + itlb_walk =3D TryEvent("ITLB_WALK") + l1d_tlb =3D TryEvent("L1D_TLB") + l1i_tlb =3D TryEvent("L1I_TLB") + l1d_refill =3D Event("L1D_CACHE_REFILL", f"{pmu_name}/l1d_cache_refill/") + l2d_refill =3D Event("L2D_CACHE_REFILL", f"{pmu_name}/l2d_cache_refill/") + l1i_refill =3D Event("L1I_CACHE_REFILL", f"{pmu_name}/l1i_cache_refill/") + l1d_access =3D Event("L1D_CACHE", f"{pmu_name}/l1d_cache/") + l2d_access =3D Event("L2D_CACHE", f"{pmu_name}/l2d_cache/") + llc_access =3D TryEvent("LL_CACHE_RD") + l1i_access =3D Event("L1I_CACHE", f"{pmu_name}/l1i_cache/") + llc_miss_rd =3D TryEvent("LL_CACHE_MISS_RD") + ase_spec =3D TryEvent("ASE_SPEC") + ld_spec =3D TryEvent("LD_SPEC") + st_spec =3D TryEvent("ST_SPEC") + vfp_spec =3D TryEvent("VFP_SPEC") + dp_spec =3D TryEvent("DP_SPEC") + br_immed_spec =3D TryEvent("BR_IMMED_SPEC") + br_indirect_spec =3D TryEvent("BR_INDIRECT_SPEC") + br_ret_spec =3D TryEvent("BR_RETURN_SPEC") + crypto_spec =3D TryEvent("CRYPTO_SPEC") + inst_spec =3D TryEvent("INST_SPEC") + + return MetricGroup("topdown", [ + MetricGroup("topdown_tl", [ + Metric("topdown_tl_ipc", "Instructions per cycle", d_ratio( + ins, cycles), "insn/cycle"), + Metric("topdown_tl_stall_fe_rate", "Frontend stalls to all cycle= s", + d_ratio(stall_fe, cycles), "100%") if stall_fe else None, + Metric("topdown_tl_stall_be_rate", "Backend stalls to all cycles= ", + d_ratio(stall_be, cycles), "100%") if stall_be else None, + ]), + MetricGroup("topdown_fe_bound", [ + MetricGroup("topdown_fe_br", [ + Metric("topdown_fe_br_mp_per_insn", + "Branch mispredicts per instruction retired", + d_ratio(br_mp_ret, ins_ret), "br/insn") if br_mp_ret = else None, + Metric("topdown_fe_br_ins_rate", + "Branches per instruction retired", d_ratio( + br_ret, ins_ret), "100%") if br_ret else None, + Metric("topdown_fe_br_mispredict", + "Branch mispredicts per branch instruction", + d_ratio(br_mp_ret, br_ret), "100%") if br_mp_ret else= None, + ]), + MetricGroup("topdown_fe_itlb", [ + Metric("topdown_fe_itlb_walks", "Itlb walks per insn", + d_ratio(itlb_walk, ins_ret), "walk/insn"), + Metric("topdown_fe_itlb_walk_rate", "Itlb walks per l1i acce= ss", + d_ratio(itlb_walk, l1i_tlb), "100%"), + ]) if itlb_walk else None, + MetricGroup("topdown_fe_icache", [ + Metric("topdown_fe_icache_l1i_per_insn", + "L1I cache refills per instruction", + d_ratio(l1i_refill, ins_ret), "l1i/insn"), + Metric("topdown_fe_icache_l1i_miss_rate", + "L1I cache refills per L1I cache access", + d_ratio(l1i_refill, l1i_access), "100%"), + ]), + ]), + MetricGroup("topdown_be_bound", [ + MetricGroup("topdown_be_dtlb", [ + Metric("topdown_be_dtlb_walks", "Dtlb walks per instruction", + d_ratio(dtlb_walk, ins_ret), "walk/insn"), + Metric("topdown_be_dtlb_walk_rate", "Dtlb walks per l1d acce= ss", + d_ratio(dtlb_walk, l1d_tlb), "100%"), + ]) if dtlb_walk else None, + MetricGroup("topdown_be_mix", [ + Metric("topdown_be_mix_ld", "Percentage of load instructions= ", + d_ratio(ld_spec, inst_spec), "100%") if ld_spec else = None, + Metric("topdown_be_mix_st", "Percentage of store instruction= s", + d_ratio(st_spec, inst_spec), "100%") if st_spec else = None, + Metric("topdown_be_mix_simd", "Percentage of SIMD instructio= ns", + d_ratio(ase_spec, inst_spec), "100%") if ase_spec els= e None, + Metric("topdown_be_mix_fp", + "Percentage of floating point instructions", + d_ratio(vfp_spec, inst_spec), "100%") if vfp_spec els= e None, + Metric("topdown_be_mix_dp", + "Percentage of data processing instructions", + d_ratio(dp_spec, inst_spec), "100%") if dp_spec else = None, + Metric("topdown_be_mix_crypto", + "Percentage of data processing instructions", + d_ratio(crypto_spec, inst_spec), "100%") if crypto_sp= ec else None, + Metric( + "topdown_be_mix_br", "Percentage of branch instructions", + d_ratio(br_immed_spec + br_indirect_spec + br_ret_spec, + inst_spec), "100%") if br_immed_spec and br_indi= rect_spec and br_ret_spec else None, + ]) if inst_spec else None, + MetricGroup("topdown_be_dcache", [ + MetricGroup("topdown_be_dcache_l1", [ + Metric("topdown_be_dcache_l1_per_insn", + "L1D cache refills per instruction", + d_ratio(l1d_refill, ins_ret), "refills/insn"), + Metric("topdown_be_dcache_l1_miss_rate", + "L1D cache refills per L1D cache access", + d_ratio(l1d_refill, l1d_access), "100%") + ]), + MetricGroup("topdown_be_dcache_l2", [ + Metric("topdown_be_dcache_l2_per_insn", + "L2D cache refills per instruction", + d_ratio(l2d_refill, ins_ret), "refills/insn"), + Metric("topdown_be_dcache_l2_miss_rate", + "L2D cache refills per L2D cache access", + d_ratio(l2d_refill, l2d_access), "100%") + ]), + MetricGroup("topdown_be_dcache_llc", [ + Metric("topdown_be_dcache_llc_per_insn", + "Last level cache misses per instruction", + d_ratio(llc_miss_rd, ins_ret), "miss/insn"), + Metric("topdown_be_dcache_llc_miss_rate", + "Last level cache misses per L2D cache access", + d_ratio(llc_miss_rd, llc_access), "100%") + ]) if llc_miss_rd and llc_access else None, + ]), + ]), + ]) + + +all_metrics =3D MetricGroup("",[ + Arm64Topdown(), +]) =20 if args.metricgroups: print(JsonEncodeMetricGroupDescriptions(all_metrics)) --=20 2.44.0.278.ge034bb2e1d-goog From nobody Sat Feb 7 18:20:33 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D59483BB2E for ; Fri, 1 Mar 2024 18:49:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none 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git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v2 2/2] perf jevents: Add cycles breakdown metric for arm64/AMD/Intel From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , John Garry , Kan Liang , Jing Zhang , Thomas Richter , James Clark , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Stephane Eranian Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Breakdown cycles to user, kernel and guest. Add a common_metrics.py file for such metrics. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/amd_metrics.py | 3 +++ tools/perf/pmu-events/arm64_metrics.py | 2 ++ tools/perf/pmu-events/common_metrics.py | 18 ++++++++++++++++++ tools/perf/pmu-events/intel_metrics.py | 2 ++ 4 files changed, 25 insertions(+) create mode 100644 tools/perf/pmu-events/common_metrics.py diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/a= md_metrics.py index 377ce413d051..5a1f10ecff4d 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -4,6 +4,7 @@ from metric import (d_ratio, has_event, max, Event, JsonEnc= odeMetric, JsonEncodeMetricGroupDescriptions, Literal, LoadEvents, Metric, MetricGroup, Select) import argparse +from common_metrics import Cycles import json import math import os @@ -572,6 +573,7 @@ def AmdUpc() -> Metric: return Metric("upc", "Micro-ops retired per core cycle (higher is better= )", upc, "uops/cycle") =20 + def Idle() -> Metric: cyc =3D Event("msr/mperf/") tsc =3D Event("msr/tsc/") @@ -628,6 +630,7 @@ all_metrics =3D MetricGroup("", [ AmdHwpf(), AmdSwpf(), AmdUpc(), + Cycles(), Idle(), Rapl(), UncoreL3(), diff --git a/tools/perf/pmu-events/arm64_metrics.py b/tools/perf/pmu-events= /arm64_metrics.py index 0dcf5236ea1f..516b3fa08600 100755 --- a/tools/perf/pmu-events/arm64_metrics.py +++ b/tools/perf/pmu-events/arm64_metrics.py @@ -3,6 +3,7 @@ from metric import (d_ratio, Event, JsonEncodeMetric, JsonEncodeMetricGrou= pDescriptions, LoadEvents, Metric, MetricGroup) import argparse +from common_metrics import Cycles import json import os from typing import Optional @@ -154,6 +155,7 @@ def Arm64Topdown() -> MetricGroup: =20 all_metrics =3D MetricGroup("",[ Arm64Topdown(), + Cycles(), ]) =20 if args.metricgroups: diff --git a/tools/perf/pmu-events/common_metrics.py b/tools/perf/pmu-event= s/common_metrics.py new file mode 100644 index 000000000000..74c58f9ab020 --- /dev/null +++ b/tools/perf/pmu-events/common_metrics.py @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +from metric import (d_ratio, Event, Metric, MetricGroup) + +def Cycles() -> MetricGroup: + cyc_k =3D Event("cycles:kHh") + cyc_g =3D Event("cycles:G") + cyc_u =3D Event("cycles:uH") + cyc =3D cyc_k + cyc_g + cyc_u + + return MetricGroup("cycles", [ + Metric("cycles_total", "Total number of cycles", cyc, "cycles"), + Metric("cycles_user", "User cycles as a percentage of all cycles", + d_ratio(cyc_u, cyc), "100%"), + Metric("cycles_kernel", "Kernel cycles as a percentage of all cycles= ", + d_ratio(cyc_k, cyc), "100%"), + Metric("cycles_guest", "Hypervisor guest cycles as a percentage of a= ll cycles", + d_ratio(cyc_g, cyc), "100%"), + ], description =3D "cycles breakdown per privilege level (users, kernel,= guest)") diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 5775ae8a87b4..1a34e2f7a590 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -4,6 +4,7 @@ from metric import (d_ratio, has_event, max, CheckPmu, Even= t, JsonEncodeMetric, JsonEncodeMetricGroupDescriptions, Literal, LoadEvents, Metric, MetricConstraint, MetricGroup, MetricRef, Sele= ct) import argparse +from common_metrics import Cycles import json import math import os @@ -1012,6 +1013,7 @@ def UncoreUpiBw() -> Optional[MetricGroup]: =20 =20 all_metrics =3D MetricGroup("", [ + Cycles(), Idle(), Rapl(), Smi(), --=20 2.44.0.278.ge034bb2e1d-goog