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AJvYcCUIp4C/BY4I18lCrOJ7Sv5I3ltAtibWjaWflGEethfj3pUKRsrSbq1ArM+0+es5HFpIvWZboQudoIGUCig=@vger.kernel.org X-Gm-Message-State: AOJu0YxmI0b9MWM8C+kV/dZ+sykz+rek6h1bqMqzJ/3vFYy/SsL8g3dj x/8mX9bK0tqO+wzL4NO3E4ko/k58SbFGd1y3pPnriFAQZiGifvDXxgJMev6Ws3IEFsBnizhJNzH +qEcLkv24VA== X-Google-Smtp-Source: AGHT+IE1G+MehOwF6KjzzHtb+fdHuNYJEKdpccHtKGcwif7meAE6X7UTGKKmVU+J2s7OKnVu9NUbR8+gbf3Z X-Received: from pjkk12.prod.google.com ([2002:a17:90b:57ec:b0:327:4fa6:eaa1]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:58ce:b0:323:7e80:8819 with SMTP id 98e67ed59e1d1-32518b825b3mr29015147a91.36.1756440724439; Thu, 28 Aug 2025 21:12:04 -0700 (PDT) Date: Thu, 28 Aug 2025 21:11:00 -0700 In-Reply-To: <20250829041104.4186320-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250829041104.4186320-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.318.gd7df087d1a-goog Message-ID: <20250829041104.4186320-20-irogers@google.com> Subject: [PATCH v5 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 808e006addda..d822352139f2 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 2.51.0.318.gd7df087d1a-goog