From nobody Sun Feb 8 21:47:02 2026 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 EDFD232938D for ; Thu, 8 Jan 2026 19:11:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899495; cv=none; b=XR1eWNCuGZKPOMyDDyzfq02sH+ZVoqvXl01iLoD5/I3k5hipPvmaFKH/KaNACoHD+tNKMY482ktfwh0+OsGX3AFnKGUtOhN8FBerRoCGFX3ESFm4l1syNdB3uQiFt11fLarDEV0IfGXGUFyWaJV1F9NRh7Y2FYtFhsmXo9c42eo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899495; c=relaxed/simple; bh=y6hlwpTyHyOifmLqzqFarB+CugLw8uac40XfiztNF7E=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=KfnPppWy/LOjH8DyWf72r9SLecJ1YuXkupk3xWGTXSdUEGTwGL1bKvq74z4DhPaCpYY44duRJ9IEUTC1EOHn/HoMKg6X194KgY3qEEvyt4btG/npMrBCgSwVS3UDCB9jbyu9CZDaHu/GqQKZy8nR5dXsXHzc3NwjtjM2BQoKF14= 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=A9iSqIkq; arc=none smtp.client-ip=209.85.214.202 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="A9iSqIkq" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-29f25a008dbso27070665ad.1 for ; Thu, 08 Jan 2026 11:11:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1767899493; x=1768504293; 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=Vi5rn8mItqo/t2QexpWzl0At3V2hkxYPVO28WOkSCSo=; b=A9iSqIkq9EPOykJ3tbBmdl/X43tB8QJ6XSYpLGAp4VGrt0CDpnmkoZlYisZIyR48J8 D9jrCd2mLq5jPE+AMuTF4swvKj6BpHpK4y3H2sB6IdnLs5FOS54jMGqcGvgBKOnKSghG fAxDT7E2TL+uAL1tCPSP4HSzA3BCfqyNRR7kXdM5mInVQChQfrHxUnSQVI4jlDDGIILG p0Lg9/h5Gi+p9rB/ad9+kKEtxF7aojI/7F0xpPFujxJMQvGEEDIMcew2gGRZQO3Lg8nO gRyoBSJHeUZaQZ/KqXXLyxEG50NE23WCkwnj4e5ryVHkkLFxaJ6Zk3TG4kxMlLhDYybO 9CiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767899493; x=1768504293; 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=Vi5rn8mItqo/t2QexpWzl0At3V2hkxYPVO28WOkSCSo=; b=g3TPgmfAbLgCTjWw/VG5GEAKWHvzfGnVKUmzmCG02vbvYb7lE1t0Pdqs+nK3MQzwuO EWuPmsceNvctZE4dALEb+yW9XuNRSKfB1abSYSFqOfL8h3OpKYdXjyKxJ3uV5I2QXEmF y5OGXbICabLdvsA4JINAkjWD74LWDmQmXR1LCyxHmHBuvA+C/ugEkEDkkky5cmxxyM4+ asu1dgi+wM/uP/vxje2wV2KOCjusPA0D216XHOQ66bGGh/z0B5wkZBHONo92HZ7VbyfP FwTyXCsjq3TEArm5K5bAsXYJwm54EwGWDSrxpmCFeA7BOVKXuab/NYOxbrVPHaUV7/cR wbAg== X-Forwarded-Encrypted: i=1; AJvYcCX8H2u/KjYvjSM6JqW9IwYzFfVliH/V4YnDTdzHekzQmU6Hx4TFyzJVu8mYN70TKQO9Ea3CAs4bzDYyW2A=@vger.kernel.org X-Gm-Message-State: AOJu0YxzRtB9yqUEqUHIgIiyU1ncg+vMmrOMgrQHgQcpJQx1lKop+9Tm UKXzVVYDHjIxzPBz+Y+7meOXSE2d2TohaL0QZFTFyKpGTBvDF155/x/BASdgmUY99Bf20Sh8qBO 3/QS6XjDzrQ== X-Google-Smtp-Source: AGHT+IEh2Nm3AEerTFyG9iH4PkrMdqN5IsgekSkj3asg4NS8UH2QINNjmyaIwH4+eyZoyequr6fcZFPWutBc X-Received: from plwh18.prod.google.com ([2002:a17:902:f7d2:b0:2a1:3dae:8f1f]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:46c5:b0:2a3:e89c:593e with SMTP id d9443c01a7336-2a3ee41f181mr79090735ad.4.1767899493387; Thu, 08 Jan 2026 11:11:33 -0800 (PST) Date: Thu, 8 Jan 2026 11:10:34 -0800 In-Reply-To: <20260108191105.695131-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260108191105.695131-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260108191105.695131-5-irogers@google.com> Subject: [PATCH v10 04/35] perf jevents: Add idle metric for AMD zen models 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" Compute using the msr PMU the percentage of wallclock cycles where the CPUs are in a low power state. Reviewed-by: Sandipan Das Signed-off-by: Ian Rogers --- tools/perf/pmu-events/amd_metrics.py | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/a= md_metrics.py index b6cdeb4f09fe..f51a044b8005 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -3,8 +3,9 @@ import argparse import math import os -from metric import (d_ratio, has_event, Event, JsonEncodeMetric, JsonEncod= eMetricGroupDescriptions, - LoadEvents, Metric, MetricGroup, Select) +from metric import (d_ratio, has_event, max, Event, JsonEncodeMetric, + JsonEncodeMetricGroupDescriptions, LoadEvents, Metric, + MetricGroup, Select) =20 # Global command line arguments. _args =3D None @@ -12,6 +13,16 @@ _args =3D None interval_sec =3D Event("duration_time") =20 =20 +def Idle() -> Metric: + cyc =3D Event("msr/mperf/") + tsc =3D Event("msr/tsc/") + low =3D max(tsc - cyc, 0) + return Metric( + "lpm_idle", + "Percentage of total wallclock cycles where CPUs are in low power = state (C1 or deeper sleep state)", + d_ratio(low, tsc), "100%") + + def Rapl() -> MetricGroup: """Processor socket power consumption estimate. =20 @@ -57,6 +68,7 @@ def main() -> None: LoadEvents(directory) =20 all_metrics =3D MetricGroup("", [ + Idle(), Rapl(), ]) =20 --=20 2.52.0.457.g6b5491de43-goog