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AJvYcCWSf+FULq4pOzxtNdWCXzqvi1VYiW2WreH/AiL3wc++2FamscSWYnLbrwyL9wCyJtHW3QWWOzLTAQzxoyo=@vger.kernel.org X-Gm-Message-State: AOJu0YyN5OEa6BRo6+2S/ydnqMol5bt/DG30b5Xe+AzU8n5LGWkr8ixo 8Gj2WwSqyjCaA9OboGt5mG/Dz4SXwp6gqSObkt68quoKeWHQDqfNTwsYFgSXIXH0rJ6gNPdGq/J mVAH/mLEkPA== X-Google-Smtp-Source: AGHT+IE/N6MAKEsx+XK77LYz++Lo9hdGu6bLFSU5sb1Lb2ne7u2hi/FDM1GhURNwOObmL2M/3v+fFsv7zKmk X-Received: from plbh15.prod.google.com ([2002:a17:902:eecf:b0:24c:c013:50b5]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:c94d:b0:246:bce2:e837 with SMTP id d9443c01a7336-24944b55120mr261214965ad.49.1756961254122; Wed, 03 Sep 2025 21:47:34 -0700 (PDT) Date: Wed, 3 Sep 2025 21:46:50 -0700 In-Reply-To: <20250904044653.1002362-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904044653.1002362-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904044653.1002362-20-irogers@google.com> Subject: [PATCH v6 19/22] perf jevents: Add C-State metrics from the PCU PMU for 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 , Kan Liang , James Clark , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, John Garry , Jing Zhang , Sandipan Das , Benjamin Gray , Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Thomas Falcon 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 | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 669b5668a753..befaf0fcd961 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -800,6 +800,32 @@ 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_ti= cks), "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_ti= cks), "cores"), + ]) + + def UncoreDir() -> Optional[MetricGroup]: try: m2m_upd =3D Event("UNC_M2M_DIRECTORY_UPDATE.ANY") @@ -958,6 +984,7 @@ def main() -> None: IntelMlp(), IntelPorts(), IntelSwpf(), + UncoreCState(), UncoreDir(), UncoreMem(), UncoreMemBw(), --=20 2.51.0.338.gd7d06c2dae-goog