From nobody Fri Oct 3 15:34:21 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (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 1F8D9217F23 for ; Fri, 29 Aug 2025 03:31:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756438312; cv=none; b=QTDx+DT9cUqKSmw4cHIwQDi25VZcRHEp4tylkQ5vGoEvvNseIbg/4yh9inKiol/Yfv/dUdIgyWTRAgqikR5m9EzArieEfRd6KGZ/7NOrSYufwzgcxv2NE1M2oFt+M3dz1djpqayxc+rdpTpQHYjQHmtxlKG51Wfokhx8Q+4CzPg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756438312; c=relaxed/simple; bh=f6tZULxXzOYJabi15j8Tzs5VwOMZcIv+Utk6vqhZv0o=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=lM5WdZtaDz4O9UCE+bWCDcvIG+Io8dvhIgSFw/kBa77+pPUIbpT1rQrxnY6uP6d16IPcEWVwlOrKxqM/FpUqTFDk62p4zOQvTIW7hGPG3OoP+K25L7cS4QvMZGfoyuum0rSiwrcAPUiUzT5hTLyCykO8VyR6sGEbKYj3QN8UGb8= 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=hAaVks2y; arc=none smtp.client-ip=209.85.215.201 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="hAaVks2y" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b4c3547bd78so1292973a12.0 for ; Thu, 28 Aug 2025 20:31:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756438310; x=1757043110; 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=g2KPWVxhZfNI2wSoQnR4yc5PGFGxNKw8RrtXTGVAxeo=; b=hAaVks2yAFjjb2X6Js4bA4rqLOUlc+/4LyADOF6i92T7VXBS+vkCEnKzteejHuaE/R XKlJk5+Y2VACGCy0ubzX5tfnmhNGZXpSQDvS11pevNcF+avthf1FWz1mVVK+EMa460DO sKB4RnTOhvNcLNFQX0t4p4hB3UddcbwBbbJzN4Pn0fX1zhVEiQNB8kE4CwUHkKpwgv4K JXKO988CKzY6rZ22BhgcBdI1yZp00EiE8lfviyF0dxOkJ7MzriUXZ+l23TYzj2zhfh2l gdvARDjGY9CwiyB70OvaYI+Cvyae/Txfp37pFO7NkUuwbZyFbXJce4EEdvXfSxflVoBZ 2pvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756438310; x=1757043110; 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=g2KPWVxhZfNI2wSoQnR4yc5PGFGxNKw8RrtXTGVAxeo=; b=tU3pZPphUi1OSZGvPVVKSRXge9/f1Oyzja84K9r3OBEj53pHWXLuU/Jw2LABp4XIc8 384Epg8vJfAwT5AE1C9WV88ibzlZPzvqb7mQN8fQYBdezWb5bHXTlBrpCgfOYaGI/Uw7 Trdy8/qNSbuN75c+ov/1cktgY82KOL88uUQ0h+IfvdcDzO8p1UO4+mToyj6g156wXdeA bRaehi/cGlvk1ocYVAQ+mK5QGMAEkSsvSv2HXFKtglRX0migEfglvM4AL6VqfooMyTYj kmSlFODa1gOgDqnji1O+3dsIj1SKtuafDXDWunWF/SeiDfm0O5GzdiUeeV5WXsUAHM9Z G8aA== X-Forwarded-Encrypted: i=1; AJvYcCV9DgAE+uHToWIg+z/QRWaJsEsqKBDUtRlaGYoKpsB3qcLVI0xWQ9cOcf14YFs3uwCGIzDRI200scfkKbs=@vger.kernel.org X-Gm-Message-State: AOJu0Yy4u32KHZFh8GjZfqIhHB34OLqssScnAJ4QQRspRhDagfIMZ/LY nJGGAT7UPr2zSBuUTJotp8+GretJFJdMFQePNYadZ6H2gM+kt+2861HpKq8ijqBovcNhjdBzPTS jyRwyrkwVAg== X-Google-Smtp-Source: AGHT+IG1joouvBqPMX2hF04OOQp5MJw306wbLSPjyrev6oBcRL+UG3HbKsN/piOLACw1lxmtS40dAi2bJK9C X-Received: from pjk15.prod.google.com ([2002:a17:90b:558f:b0:327:e57c:38aa]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:99aa:b0:240:101c:4417 with SMTP id adf61e73a8af0-24340b8da85mr36531605637.4.1756438310394; Thu, 28 Aug 2025 20:31:50 -0700 (PDT) Date: Thu, 28 Aug 2025 20:31:27 -0700 In-Reply-To: <20250829033138.4166591-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250829033138.4166591-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.318.gd7df087d1a-goog Message-ID: <20250829033138.4166591-3-irogers@google.com> Subject: [PATCH v5 02/13] perf jevents: Add idle metric for AMD zen models 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 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. 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 2261836eae19..0dd13ddd67d5 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -1,7 +1,8 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) -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) import argparse import json import math @@ -12,6 +13,16 @@ _args =3D None =20 interval_sec =3D Event("duration_time") =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 st= ate (C1 or deeper sleep state)", + d_ratio(low, tsc), "100%") + + def Rapl() -> MetricGroup: """Processor socket power consumption estimate. =20 @@ -55,6 +66,7 @@ def main() -> None: LoadEvents(directory) =20 all_metrics =3D MetricGroup("", [ + Idle(), Rapl(), ]) =20 --=20 2.51.0.318.gd7df087d1a-goog