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AJvYcCVBypGLoljZSx/pc3QWhdK/KlKMx09IbEcoT2/DsKemMskFx4DOMmnaPB7kdLnXoc6Lr+emJlG/Pa7AEX4=@vger.kernel.org X-Gm-Message-State: AOJu0YzF3oDaKyZafN8Q/O+wIKsu5P2qHWwHQYPse15vKrjUM2GlcBD/ aQFGuMv8D54xQUULa2+OQHSzsXqjrgXXTxxVCTaZecTl7qMbdkuppjj4a/Sq8YmHVSA/QC6a/0t khjOEwUuZIw== X-Google-Smtp-Source: AGHT+IGpyPmryq9xTvHz9AjmIUhc8XIqDl1ryeGRMzQwFxEm0NYqkC5Odg5FUHwKSjdli29SyJ1qcArAzA/u X-Received: from dybli13.prod.google.com ([2002:a05:7301:128d:b0:2a4:7052:5652]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:18b:b0:295:9cb5:ae07 with SMTP id d9443c01a7336-2984edaca29mr76719475ad.38.1763004141690; Wed, 12 Nov 2025 19:22:21 -0800 (PST) Date: Wed, 12 Nov 2025 19:20:34 -0800 In-Reply-To: <20251113032040.1994090-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251113032040.1994090-1-irogers@google.com> X-Mailer: git-send-email 2.51.2.1041.gc1ab5b90ca-goog Message-ID: <20251113032040.1994090-47-irogers@google.com> Subject: [PATCH v8 46/52] perf jevents: Add C-State metrics from the PCU PMU for Intel From: Ian Rogers To: Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Benjamin Gray , Caleb Biggers , Edward Baker , Ian Rogers , Ingo Molnar , James Clark , Jing Zhang , Jiri Olsa , John Garry , Leo Yan , Namhyung Kim , Perry Taylor , Peter Zijlstra , Samantha Alt , Sandipan Das , Thomas Falcon , Weilin Wang , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use occupancy events fixed in: https://lore.kernel.org/lkml/20240226201517.3540187-1-irogers@google.com/ Metrics are at the socket level referring to cores, not hyperthreads. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 30 ++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 24ceb7f8719b..118fe0fc05a3 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -815,6 +815,35 @@ def IntelLdSt() -> Optional[MetricGroup]: ], description=3D"Breakdown of load/store instructions") =20 =20 +def UncoreCState() -> Optional[MetricGroup]: + try: + pcu_ticks =3D Event("UNC_P_CLOCKTICKS") + c0 =3D Event("UNC_P_POWER_STATE_OCCUPANCY.CORES_C0") + c3 =3D Event("UNC_P_POWER_STATE_OCCUPANCY.CORES_C3") + c6 =3D Event("UNC_P_POWER_STATE_OCCUPANCY.CORES_C6") + except: + return None + + num_cores =3D Literal("#num_cores") / Literal("#num_packages") + + max_cycles =3D pcu_ticks * num_cores + total_cycles =3D c0 + c3 + c6 + + # remove fused-off cores which show up in C6/C7. + c6 =3D Select(max(c6 - (total_cycles - max_cycles), 0), + total_cycles > max_cycles, + c6) + + return MetricGroup("lpm_cstate", [ + Metric("lpm_cstate_c0", "C-State cores in C0/C1", + d_ratio(c0, pcu_ticks), "cores"), + Metric("lpm_cstate_c3", "C-State cores in C3", + d_ratio(c3, pcu_ticks), "cores"), + Metric("lpm_cstate_c6", "C-State cores in C6/C7", + d_ratio(c6, pcu_ticks), "cores"), + ]) + + def UncoreDir() -> Optional[MetricGroup]: try: m2m_upd =3D Event("UNC_M2M_DIRECTORY_UPDATE.ANY") @@ -979,6 +1008,7 @@ def main() -> None: IntelMlp(), IntelPorts(), IntelSwpf(), + UncoreCState(), UncoreDir(), UncoreMem(), UncoreMemBw(), --=20 2.51.2.1041.gc1ab5b90ca-goog