From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f180.google.com (mail-dy1-f180.google.com [74.125.82.180]) (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 C2B864DA9B1 for ; Thu, 15 Oct 2026 22:35:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792103760; cv=none; b=l2AQ0k58/dsq5G+/Zd15AuXFpHHRx5RCXi8BT7XDKl+wicXt/kmZVJXxGixo/UN7p3kM/G4vjIyHpiEnKme6WWEkOkn57JFrso+wfRb58Zag0AIl8aDoDzgCQZ+YHVsqGqKz0YjYMVlL/PHGK6vJ4Ok05Lhy4s4H+vf7Uy5iJzw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792103760; c=relaxed/simple; bh=cNb2599aisLf9N4nv6csEEr4VxPSgmqchakmgV0DaH8=; h=Date:From:To:CC:Subject:In-Reply-To:References:Message-ID: MIME-Version:Content-Type; b=bwq7FX7XE7ii4N56bk20aPgenPws9f1xigdvmno8fs7M1XK9dGDiTNIKwg2k7arrRWaE8rmeGH3dNuaV+4ciJ2HQR+D2F+23OqfGuEEHOYvEA2pJMaFmvvo2SU+eJFXEJwWMvj2FBLBHNNAEmCJL8SCRT8o9lQXu/fZ2IYaCcC4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=EjIqj7pC; arc=none smtp.client-ip=74.125.82.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="EjIqj7pC" Received: by mail-dy1-f180.google.com with SMTP id 5a478bee46e88-35943f55c06so564350eec.0 for ; Thu, 15 Oct 2026 15:35:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792103758; x=1792708558; darn=vger.kernel.org; h=content-transfer-encoding:content-type:mime-version:message-id :references:in-reply-to:user-agent:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to:content-type; bh=xXSyEv36jnn0UrqVwNj52XhE8B6xeFQj285n9/QUz+4=; b=EjIqj7pCoK4+nk0gU9MX14g+breJOxcXlm0yFKr5EaiA8aq7vDFzKWKqk+IoaAcvMV mSk4mZuF73BmDubLI/kgjeBIyCTSOxz0+xTMAhHUnQy+xx/mhI9FpSqXCtR1GsB/HQ/K BfGvBbOB5qbbVG/vRaSijI7V088bcrEaSPx+mfU4LsS5YTmPXTAFdGc30M8xHlIR56zG Es7oHusr7nahKY3iRvXOTKZYXuBp/VBr++bBzCfjFl929eJRLbEmlP/94yn/pOgGzBkS h5EXmNuXi41gSBA+oH/q0PCluQzF70hc4fFgENnEBxbpR86TLZRDtN80ggq4m5Ay3lsG OqMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792103758; x=1792708558; h=content-transfer-encoding:content-type:mime-version:message-id :references:in-reply-to:user-agent:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=xXSyEv36jnn0UrqVwNj52XhE8B6xeFQj285n9/QUz+4=; b=J07x668qKfk9SPSl2Tn8fJUqDmAB5U4DyDAsKfkECCSLbvtHPAjQbJLtXgFZAavyoJ B77dEV6RNDQaTsptrj3exGFOcLCcWyt1jA74/s6JwzKDQvSDZfxvTa+s8uAxEZJcRj77 gRnDbpmh6RIL8ZPfOOKielonurzWwamNVDDcwN3Ascp/6N7eA9en3HGCzC5Aq3zksUaR CeasfULRTCUZgIZC4C5tXcRXqMLNrRgWX/nB7qB0qk2c8CYUHikBg3DPWmk/xJ8zK/Vi fJj52tOyJIgCklhOTN2HFRjrRcxFe3HpPUE/Lj8c9zb3q1mZm8ds5RhaRIKyxfUljky3 Tklw== X-Forwarded-Encrypted: i=1; AKwUvBxL/GQgQ1kC+Ax7p7+I6ycEuhbFdC8q0462K+1yJYzZk1ODTFrXrDMltVIgQE8GHG2dsJgYeRcWMtcL1a8nzkY=@vger.kernel.org X-Gm-Message-State: AFq9FYIkmES90mTy4QTXU9btZ2KUTPysX0jRswULHxgle6mfCF1vLzaI anz42rKvhLYZlo7qvM+YmsxU9xPWzCLkx6PWKk/sBwWLZ1fcw/h8iP/3ldnLVj/a X-Gm-Gg: AYBFou0ILrlwvYj3NJ799yH7PyaLMhLVKQjF83tmzPhrfD/JebfS+mrZw04ZZXgRJNM zQU77wQA0GHihjw0HAoWq1RPY3QP2f+q8qE/meYzhS/jNln9CSzxdCsAqhi+0NFlPh4PUd06F0m o6NoiG4B7lAO+B0Wj4mOJk5X0nJxA9OieLBBt/ICzdlj1628bVTPGxfD21HIIBu4hpc6bNDNYXo cUQua7N2KXIb23xRLFJnYgTPpPC5ybXP1ybkT9bBdCciegjNBXpK0x2rq/KJJPta0Zwqo4vh5LS TnlF2mPRb8uoNqL2BKxf86s9aPleUPlatTUjcb61O83A3xX9ODJn03ZuASfPP8C4+mQ3/nwOu/M PdVvKsD1qTlXnieNXLyF5dtLwwzbMTCJzao733bdVa0gKHiCg7Ti+dXukTHz1D4QSwUZIcmxNMZ Ze86pSWtcqL1Tvxk2IHnqAFWE2h6HF0G8HNnSdQA/NaBeSpu3W1I9OqI1A0JefqXn4JuR6OfGmv 5vwj3zhxiFhggs= X-Received: by 2002:a05:7300:50f0:b0:35c:eb2a:8c2a with SMTP id 5a478bee46e88-3602ae5f83emr1712774eec.8.1792103757626; Thu, 15 Oct 2026 15:35:57 -0700 (PDT) Received: from ehlo.thunderbird.net ([2804:2bf0:60e7:ae00:5bc5:e41d:2ee5:2023]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3607ee0cab0sm1155305eec.3.2026.10.15.15.35.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Oct 2026 15:35:56 -0700 (PDT) Date: Thu, 15 Oct 2026 19:35:50 -0300 From: Arnaldo Melo To: Sasha Levin , Arnaldo Carvalho de Melo CC: Ian Rogers , linux-perf-users@vger.kernel.org, Namhyung Kim , Nathan Chancellor , Nicolas Schier , linux-kbuild@vger.kernel.org, Shuah Khan , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 3/6] tools: build perf in tools_build User-Agent: Thunderbird for Android In-Reply-To: References: <20261011233647.2454648-1-sashal@kernel.org> <20261011233647.2454648-4-sashal@kernel.org> <20261013170854.647305-1-sashal@kernel.org> Message-ID: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On October 15, 2026 4:26:33 PM GMT-03:00, Sasha Levin wrote: >On Tue, Oct 13, 2026 at 05:21:25PM -0300, Arnaldo Carvalho de Melo wrote: >> Why is that difficult to run: >>=20 >> make -C tools/perf install-build-deps >>=20 >> To do a recommended perf build deps install? >>=20 >> That would be useful as it is what we expect users to do=2E > >That's what users do, but it wants to install packages=2E > >We need a path for unprivileged builds on bots and CI machines that can't >install packages, and many of those builds are cross builds, where perf n= eeds >the target's libelf and libtraceevent rather than the host's=2E I see=2E It's unfortunate as the end result will not be that useful, as it= will not be testing what people use=2E Maybe use make MINIMAL=3D1 when doing cross builds?=20 I think we can make this easier for you somehow, like disabling libtraceev= ent when not available instead of asking for it to be explicitly opted out= ? >> If that is too difficult, for some reason, there is a minimal build in >> tools/perf/tests/make, that is tested since forever: >>=20 >> # all the NO_* variable combined >> make_minimal :=3D NO_PYTHON_MODULE=3D1 >> make_minimal +=3D NO_DEMANGLE=3D1 NO_LIBELF=3D1 NO_BACKTRACE=3D1 >> make_minimal +=3D NO_LIBNUMA=3D1 NO_LIBBIONIC=3D1 NO_LIBDW=3D1 >> make_minimal +=3D NO_LIBBPF=3D1 >> make_minimal +=3D NO_SDT=3D1 NO_JVMTI=3D1 NO_LIBZSTD=3D1 >> make_minimal +=3D NO_CAPSTONE=3D1 >I tried make_minimal on perf-tools-next=2E It still requires libtraceeven= t, so an >arm64 cross build without the arm64 libtraceevent installed stops at that >check=2E With NO_LIBTRACEEVENT=3D1 added, it then fails building the Rust= test >workload=2E I'll fix that, make_minimal wasn't updated when libtraceevent was made opt= imal, IIRC when it was removed from the kernel sources=20 > Natively it still enables aio, libLLVM, libslang, libtraceevent, >lzma, zlib and Rust when they are installed, so the result depends on the >machine=2E > I'd like to go with Ian's suggestion then: a MINIMAL=3D1 knob in perf th= at turns >off every optional feature, which tests/make can use for make_minimal as = well=2E Sure, for your use case it makes sense=2E - Arnaldo