From nobody Sun Feb 8 21:46:46 2026 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (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 5F8AE3D56F for ; Fri, 1 Mar 2024 18:48:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709318896; cv=none; b=U0xgfQzkqV5rn8jPoUSAgJgQXn3M/sdWpq7NCckgKAEXQcONzqpL12X4eS+o9viO0byJkdujVVaFyUuaNbOde3qsiSHdHkJqVifX2GBTReREscidZXLwm/UJ6ABbNebzgHKTQ6z6NFNqAB5afclU2snY3uUBMswtIMJFuPt+RKA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709318896; c=relaxed/simple; bh=UwkjYK+U+f8LwVeVeyTQSJU60/nxqzY/uXtXOkioAuY=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=oYclqJZucPE1xUSl/PcrLX7SAm5wm1XnvCCf4luEYdGqKZN0KOS5fFGJuLf3baLRcpJiDW746K415diQ7eG36J7xBWoNmnmm7xvBggE2uj8d8GN4Ch8BCw0yxwmsM/W5Dq+KyM8YGx943Gx5RmY/zxEz/FInDQD8YhtN3CXa69c= 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=KlnRSczW; arc=none smtp.client-ip=209.85.219.201 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="KlnRSczW" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc743cc50a6so3228725276.2 for ; Fri, 01 Mar 2024 10:48:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709318894; x=1709923694; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=rDmb+1G4FeL2VOjrPNtrbYg/sNUzgE2lO0wYF9ntEME=; b=KlnRSczWV9Ue3URYn+VSNWt8DdbUZdt9dwyGMTyN1+kV1Yo1nVLPyv1m3UBNaGtWSL Jf0FqqHVnjGRso4FzECrta+bQ08ZuuNamme9jE7cD8SHzDaLMeLkBo6SXQzFCVJcHA1K qcRxeNRmwoyUQBSLV7bJ1/Ns0nGdUxO4IaqXKApplrZsKmUYKXrL0U/Ay+IndTIb/ETy KQAf2pph9Yw3M7L78bXx8cWWF7kmddl8iRjB1BRf6IrBoMMiA/p6RRP3Nc+CfgOQ750r LlTUieFjno8lpOkPmio9hqF/3+OgKQ/4nQ6GTlLNDITXs+cfj8yS8++560kr/+zKWiFn Wlag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709318894; x=1709923694; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rDmb+1G4FeL2VOjrPNtrbYg/sNUzgE2lO0wYF9ntEME=; b=tfTq/H8tZFVyhfKY5xViPzAF+KRYSlc4sEWE6cCTk5PXIugvAzppRWaLdnG8KvtDRM 6UYiiI8P6LRWpiK/doBabDNp+/m7ODi2rkSirN/k4Fo09obH1O/eIX3U+ZtHPcwHSbqf ms5CMdNBTxlsImvFIGJZsSc4pakeiEFp70Z4liGKP7+EWAmsqmfLuCEgVjRq7FMbSFTT Ka+cRYSRyFp4a+voGhs3+RfgN6PiMNQPblOcPxJ7jIOERGmIm5eCAZYV2j0h8G3fsmAc pUlgQOTdyXEczur0njvY/PpQp55mTbwsIBhnFZFBVuL1YC6qq3Adx6//ByLYazkEAc8b okkA== X-Forwarded-Encrypted: i=1; AJvYcCVyx06jvWU/9wShrHIt1qjcTFvgzrOcj8z6aoURLKI1CHKnTVaQ77BODQjWjvTjg288ky/40BXB8p6+k4UECHyJvO7Uppc5A+zvBVaz X-Gm-Message-State: AOJu0YzHhmegCxkRh9T3dD5gMU8xchG/rPkqag18Q8Dbhc5rL6ad3Ngv 9w1GISGm4NePJeLSUh5pyKWOrVmi92ELVE/6fD7GmXOI6SrqHicyRinX/MENgtb8PX/h2YROk/8 pjnLolg== X-Google-Smtp-Source: AGHT+IFng0Mqc23qnGvUVcJG0zjb+k/lfku+BXgRvaXwuOhxFc0DvXoSL3inQGchvvNQMPlLV/xu/l78WZlV X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:af4b:7fc1:b7be:fcb7]) (user=irogers job=sendgmr) by 2002:a05:6902:1024:b0:dc2:5273:53f9 with SMTP id x4-20020a056902102400b00dc2527353f9mr93587ybt.1.1709318894486; Fri, 01 Mar 2024 10:48:14 -0800 (PST) Date: Fri, 1 Mar 2024 10:47:37 -0800 In-Reply-To: <20240301184737.2660108-1-irogers@google.com> Message-Id: <20240301184737.2660108-13-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240301184737.2660108-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v2 12/12] perf jevents: Add context switch metrics for AMD From: Ian Rogers To: Sandipan Das , Ravi Bangoria , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , John Garry , Kan Liang , Jing Zhang , Thomas Richter , James Clark , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Stephane Eranian Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Metrics break down context switches for different kinds of instruction. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/amd_metrics.py | 32 ++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/a= md_metrics.py index 91f323c1a149..377ce413d051 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -125,6 +125,37 @@ def AmdBr(): description=3D"breakdown of retired branch instructio= ns") =20 =20 +def AmdCtxSw() -> MetricGroup: + cs =3D Event("context\-switches") + metrics =3D [ + Metric("cs_rate", "Context switches per second", d_ratio(cs, interva= l_sec), "ctxsw/s") + ] + + ev =3D Event("instructions") + metrics.append(Metric("cs_instr", "Instructions per context switch", + d_ratio(ev, cs), "instr/cs")) + + ev =3D Event("cycles") + metrics.append(Metric("cs_cycles", "Cycles per context switch", + d_ratio(ev, cs), "cycles/cs")) + + ev =3D Event("ls_dispatch.ld_dispatch") + metrics.append(Metric("cs_loads", "Loads per context switch", + d_ratio(ev, cs), "loads/cs")) + + ev =3D Event("ls_dispatch.store_dispatch") + metrics.append(Metric("cs_stores", "Stores per context switch", + d_ratio(ev, cs), "stores/cs")) + + ev =3D Event("ex_ret_brn_tkn") + metrics.append(Metric("cs_br_taken", "Branches taken per context switch", + d_ratio(ev, cs), "br_taken/cs")) + + return MetricGroup("cs", metrics, + description =3D ("Number of context switches per seco= nd, instructions " + "retired & core cycles between context= switches")) + + def AmdIlp() -> MetricGroup: tsc =3D Event("msr/tsc/") c0 =3D Event("msr/mperf/") @@ -589,6 +620,7 @@ def UncoreL3(): =20 all_metrics =3D MetricGroup("", [ AmdBr(), + AmdCtxSw(), AmdIlp(), AmdDtlb(), AmdItlb(), --=20 2.44.0.278.ge034bb2e1d-goog