From nobody Thu Dec 11 19:08:15 2025 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (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 48F762D7DCB for ; Tue, 2 Dec 2025 17:52:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764697946; cv=none; b=gkIx1Jp4dtFjsin8W+CE16gnIt5J/NcRvcui8zmfEvPJl2loNmsLs44KEuT811P1cIRP1t36zGvuk6+K6+9fyuVk7EL6VTq6JWeQOm4TXPMfi4u+R/qYZvgKuI8qnOVnqyrk2Y5+9vcyX47pD1ja8oJbDVT6TvcAlUdbz1Z6G90= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764697946; c=relaxed/simple; bh=AyZA4nD7jh5kb1lPGF2MDaVZ/tkGQEyjyH8++oUHFGM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=S/5UX+q4iJxeIAbwAk+XhItLAgyghf+QsoxNKDDhLXvzoNTS+RLcWIGIQylcENYYbq2x7ggs1ZR1/8hHzKC4IHjF6/UX7qS4D4OqedlD2bJFm0SYPyiYfZ1Ouvs4pWfHwz/IBrJO8Jj6UnCpKRCf5KQKiW6aKiqAqSo50zwOlOI= 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=faKp60jZ; arc=none smtp.client-ip=209.85.215.202 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="faKp60jZ" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-bc0de474d4eso11550338a12.0 for ; Tue, 02 Dec 2025 09:52:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1764697944; x=1765302744; 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=6lWESTB2UTGcAg+Bqss+YoR/rSNf4J9eOBW+DXHV/2E=; b=faKp60jZtmY3yxYtU4oIAcP9k7qBVZ3QxYAdhl38/5kagD5YLQvluPVdQ+a6xvuxy9 S/9C54di55Jb5TOWxrEvmVgU/SvTYNTT8zp55s99yc2CE3ghasJefEOix2vELUrcwnYo HQ94Uhbbcprt3CQz7UU2K+TjHG1B+KEKZQnMq2tA/v5/jDkCubpDzUP+qM1v5tVG90KH FF2oNKsGc480n0ILft27hwR4p8G8Q4R5dz/W9/15nyC8JIJNPd/gQ5ED7r54Pi48kCbX q5/u3DQjV4Uw27zci/5SMjQryx/L2YxwUP4ssoLh4+oLDzht6P5Zd93oglnDC7UC1rmv I1eA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764697944; x=1765302744; 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=6lWESTB2UTGcAg+Bqss+YoR/rSNf4J9eOBW+DXHV/2E=; b=dFAK7H4TD0bzND7cd0S7MPuppb6AqmL5KHT3hCXP0i+Q9hPnAzHvnDUSiSviHt/MKc ana2Z8uls1iB4LTaZa1rymZK73DVGPyGpvY8hiOGFR9kRa+MST9lXdrNUcQ1xZOtn2G+ 1pWLlMo3lBj4MY3MF/oVg620xzVvo2LX7AFn2aBJHpeiMDhn4FzPl3T4p+68zVBXnmpu xfHWHZDWpXqrCTg/voWxeeM0YYWR+hiboAj93pR3UM5b4FJm++skThNe1eZQueBgKkQ0 29vPhWJYHbmBz19HRrqORk/gFVJBg4GtS1A+aLF3Mrhz5woLp3w7uOi9rRmLNHcp7R9G px3Q== X-Forwarded-Encrypted: i=1; AJvYcCXdyV9GYx8gk8I0Vo4Xc2teWeawUgfkm3O4K3/Hu1MZYhz20ncxrSPWu3TtnN8KP2RrCZmk4325yHJrMmo=@vger.kernel.org X-Gm-Message-State: AOJu0YyV7XDMbF9/95MhpWtPV57lA3KbAaoSOoQmiw9NEmx8cUHZ9aq6 hqQ1sd2QRX25Jz89BJ2/F9DPza+/GoX+RtZh5h4akC+6BLLC+aZusP8fs10AHHhVirEqg3SIv+0 7g0RbZv5oEw== X-Google-Smtp-Source: AGHT+IGHRBUPQQI/Ixl6furUweurkhLLHHi+K7hWEgwf6CovRvn8iSd9kk5hxy9K0HFykKH3Edpqp6VZSQlX X-Received: from dybms17.prod.google.com ([2002:a05:7300:d511:b0:2a4:559f:7c4e]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:ec96:b0:2a6:a306:eff5 with SMTP id 5a478bee46e88-2a941581a8dmr17218723eec.5.1764697944468; Tue, 02 Dec 2025 09:52:24 -0800 (PST) Date: Tue, 2 Dec 2025 09:50:11 -0800 In-Reply-To: <20251202175043.623597-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251202175043.623597-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.158.g65b55ccf14-goog Message-ID: <20251202175043.623597-17-irogers@google.com> Subject: [PATCH v9 16/48] 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. Signed-off-by: Ian Rogers Reviewed-by: Sandipan Das --- 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 2.52.0.158.g65b55ccf14-goog