From nobody Mon Feb 9 11:04:45 2026 Received: from mail-dl1-f74.google.com (mail-dl1-f74.google.com [74.125.82.74]) (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 CC64836BCCA for ; Tue, 27 Jan 2026 18:46:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539586; cv=none; b=ZfKuRJX6MJzbsCqW/04Jw7Qg1v7grbkQ1rWftDGvCJ+axH+tP7Yn9hXwUEH1yaUFzeK4loC2obI5BSrUDgS1H706/t++ILEhiFZxN+YZftJYvFgUZn9PEYywd5Nem172awJ3PROqUs8XF00gRqnR121HbkNT61xamCjQihZ82qI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539586; c=relaxed/simple; bh=0/p47u8XI/jepoD/8n27VWWYDMXq2JoIclYASBN8NcM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=KRDRBWVng4XGGip91g4yWnkzJvKMvDqLJf7+GU/AZffNtsn5cUq0+T9JX/ODPLJ2PQWS8poCHzaK3qCc5qk0VGVrlpfLCvJM8+GpCDtfkSvvPA79VSvopq2GVAqcJy0bRmU5WglazlYPaIvk7Cfp6lZRFBq9V7hF7TM+kHsWvu8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=PjUpvf1y; arc=none smtp.client-ip=74.125.82.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="PjUpvf1y" Received: by mail-dl1-f74.google.com with SMTP id a92af1059eb24-12337114f3fso8314414c88.0 for ; Tue, 27 Jan 2026 10:46:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1769539584; x=1770144384; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=a8hELqlVqsPd53TkBvYAfiL9c8Iu/vvPZfjM7X/WNAc=; b=PjUpvf1ygi+Hbk8spsqC5wR8y/0AlujyVQ9vmQPR/4bmkb5wwJp/pQb9yGCz8T3OnO C4ICh+BGtLGSxV+YTsnzHa4mnYc1T08qxtqzOoDl5GPh8Nf8iDCDVQTFvZx265eXptTX XRXhYjBGcTPPeXqBDqZdF2tZpYB8y9obv3cMfKWdLWNV4VNExdOO217odvZXJQmIVxxF PBojYiB6GNhSJLCc6NVeTgf5w8+czxOvi2dPrbwhEtO38GTj6BpJWsLNvtk4IMfUTaJQ 7R07tfbPS98z0o1Zm4Smv6RWAQ8ahoye2qGA/rnm7z8Zo1hAmlQHUDe6fBF9Lray+eZR LHcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769539584; x=1770144384; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=a8hELqlVqsPd53TkBvYAfiL9c8Iu/vvPZfjM7X/WNAc=; b=FImhy2GRyyatbCHQaXb3FW0loWp2PSoKtnJiLaeXLrjS+ScWWS58T7NgOvx/sbYbbU sqO1cWcxpBV+wcELgeDVFNYaknDOYvDrz8v73vm3XhLmc5VsCfkR5dPLHepUXE108+I7 DmRi1U1DRS1ayT7+WWTNNZnht6arw2+qnbOqQ0UFUBjLfEG1477yMM1ic+7+djzAkNOs RrNHXofDwQQtE4bryaqNMporGr4gyuJj4mKImT3oPPImvwk8vW6+x5syfc3CbUNdzHeh GH9k/+5fFZxKCKUebVslgTPq0wt9N/2uRMkde4fpFfk/NDk5jWmi9gkPUK2akdE7Cu3Z c0UA== X-Forwarded-Encrypted: i=1; AJvYcCWSSwUw/UgmFu55outvnx1h3A6CnblLQEwW9K0bxSmAI67uE2jMmuH7r/CI5FgOFcx3D/IYf8txzFdHVZw=@vger.kernel.org X-Gm-Message-State: AOJu0YyOOBs/P0wmJw5vJX7KaUBwxciQj0IzNOG3idaxAjbxC5VE9mrq eAL/KjVGjv/01HgWdBeT7OEKMfWj5AJqyvZ93RLfLArxqdQBdl2M3/7xkko+vJcUl44nwNEdWCf G2BMNNpk+iw== X-Received: from dlbtu19.prod.google.com ([2002:a05:7022:3c13:b0:123:2dd9:db4]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:6286:b0:11b:9386:a37d with SMTP id a92af1059eb24-124a00e8ae7mr1367052c88.44.1769539583947; Tue, 27 Jan 2026 10:46:23 -0800 (PST) Date: Tue, 27 Jan 2026 10:45:01 -0800 In-Reply-To: <20260127184506.3059493-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260127184506.3059493-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260127184506.3059493-31-irogers@google.com> Subject: [PATCH v11 30/35] 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 , 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. Tested-by: Thomas Falcon 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 2.52.0.457.g6b5491de43-goog