From nobody Mon Feb 9 16:17:28 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 211611BDE0 for ; Thu, 14 Mar 2024 05:59:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710395953; cv=none; b=iibiSOpliBLqUxkXAbM2GhlEIu4eQZmdtqnAH42w4pX2U6MSJeX83knE55r/KLpiJ0SMsTIi6x9mz6fRy9SpHijjUzFUKjYtXwUWFyGxnU5o0/3oQxLT1eFwql9F9d6PQk9B3VmG1SlozLQUsghX+mnnCRULENCRK8ALGY49NkA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710395953; c=relaxed/simple; bh=Mk3XQlHLZxdVodcrzm+PODwSYBMgkZqVt9gXIE7aW2I=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=pCm3SDYQ6Kfokq9Hs0on4N2MikIs4Bb0GZ+8KBnyOPZ11bSGuZzFy+HuRE9S6jgcq07AC6kN62mYpKxgLSLZ/SXxw/WbkyYjOkZC1REJqj2r4251Hd8U20gjVqsV/VxirJmkL/VHVDUsrKMtbxMtccyLBhwANV9ATiHk+rcUVzA= 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=Q3Me8htA; arc=none smtp.client-ip=209.85.128.202 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="Q3Me8htA" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-608ad239f8fso10660217b3.0 for ; Wed, 13 Mar 2024 22:59:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710395951; x=1711000751; 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=xSBh0lB+a23+39fFaPjg8zQM/Im9uFNXguVDinAnXbc=; b=Q3Me8htAcgDEJEuqazatt0G3Rlq7GsKxRDIeFW0dTzEQfeqVVWA72NvbSLXFhqSXXj O2o+rPXJKuOaBpK9pwDk5/7k7/mc7l6YM9fL+4Ih+5KDYgwBCwQF1BB51REA2TYOkIN1 bGYLLKYjvQO9N5CZ61AwyULuiZCKG1n8d7C9II3FrL9JN3Ub0spAXefYGrtDvIYuTYeD UY4mIgSzwyGO7lBP0oVnNMek3l7+M49LrhB+7BRws094d7Kx3xHKsU9Gj7gz/1BDBScE kYpDAeKO3oCAU1bwTtv9BPOENT5lfFJUyN7EMvl/E/jk4MXV36Nty8XiUs5D23b3lg8t CPcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710395951; x=1711000751; 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=xSBh0lB+a23+39fFaPjg8zQM/Im9uFNXguVDinAnXbc=; b=XEdZagZbTNliN9nTuE8dvk+56r9dsURxiA31UNHP/AXKDyHl0o3rQJ5ti9b+HzoQnX l7Wc4XVfYaBZ04Dgr49CTr8voGsBL1FBY20NWBWziSpHXZVoj3HGnGpDkJATOELUQZl8 ONLZdZUd3PS/lq1ylTw9ckHciAxI+kFoXCIqaHuM+Xrgt74M0i712YeHVD5jNeNuok7g DdD9gfJYu76BTqROCOF6vgp3l0Dh/vDCickODDHSv3AS0EUZL8rFc/MUOEy+rhWn5e7K s5O3HHw4yXct5guTmJvhF4yvRBnyaum8vXnaLgdx9JI4H558ikAQt7Y3E/T1ZfLPbQXD 4pfg== X-Forwarded-Encrypted: i=1; AJvYcCVsDfAdD4STyaRZNRQSOaXVsjEZn7MeNWA8scQj9ljWLD8+i1rURpRCWZs+AE8b6vZbKc+lhpzaK+I5ygwTaDjsWtG0aeLzMYZptqIX X-Gm-Message-State: AOJu0YxTCB1S2UQ98Vl4RhtpIaqfP2ripZp36QLI8JiNfhR7Si55I/li 8F6rJzkqT+2HE9A+fjPS4BIqyXaNrQ7G+YS08iO/XJ7pa1telCsT42F02Kg90KHikggBeNdChDN LZ90tDg== X-Google-Smtp-Source: AGHT+IGz/WcD1pwUVpDjsHmi87+odVdNlep/ZH4vaPqLNRuRB0bMnFJncve4GNCavNVSJJbYCIMFntlCkmwb X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:449f:3bde:a4cd:806a]) (user=irogers job=sendgmr) by 2002:a25:9285:0:b0:dc6:dfc6:4207 with SMTP id y5-20020a259285000000b00dc6dfc64207mr211031ybl.10.1710395950986; Wed, 13 Mar 2024 22:59:10 -0700 (PDT) Date: Wed, 13 Mar 2024 22:58:39 -0700 In-Reply-To: <20240314055839.1975063-1-irogers@google.com> Message-Id: <20240314055839.1975063-13-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240314055839.1975063-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v3 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 bf5c4ffa53e9..bc70743c2f11 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -120,6 +120,37 @@ 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/") @@ -613,6 +644,7 @@ def main() -> None: =20 all_metrics =3D MetricGroup("", [ AmdBr(), + AmdCtxSw(), AmdIlp(), AmdDtlb(), AmdItlb(), --=20 2.44.0.278.ge034bb2e1d-goog