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[100.37.170.231]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b18d27be4csm91036185a.15.2024.10.25.14.04.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2024 14:04:08 -0700 (PDT) From: Tamir Duberstein Date: Fri, 25 Oct 2024 17:03:53 -0400 Subject: [PATCH 1/2] kunit: add fallback for os.sched_getaffinity Precedence: bulk X-Mailing-List: linux-kernel@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 Message-Id: <20241025-kunit-qemu-accel-macos-v1-1-2f30c26192d4@gmail.com> References: <20241025-kunit-qemu-accel-macos-v1-0-2f30c26192d4@gmail.com> In-Reply-To: <20241025-kunit-qemu-accel-macos-v1-0-2f30c26192d4@gmail.com> To: Brendan Higgins , David Gow , Rae Moar Cc: linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, Tamir Duberstein X-Mailer: b4 0.15-dev Python 3.13 added os.process_cpu_count as a cross-platform alternative for the Linux-only os.sched_getaffinity. Use it when it's available and provide a fallback when it's not. This allows kunit to run on macOS. Signed-off-by: Tamir Duberstein --- tools/testing/kunit/kunit.py | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py index bc74088c458aee20b1a21fdeb9f3cb01ab20fec4..3a8cbb868ac559f68d047e38be9= 2f7c64a3314ea 100755 --- a/tools/testing/kunit/kunit.py +++ b/tools/testing/kunit/kunit.py @@ -303,7 +303,16 @@ def massage_argv(argv: Sequence[str]) -> Sequence[str]: return list(map(massage_arg, argv)) =20 def get_default_jobs() -> int: - return len(os.sched_getaffinity(0)) + if sys.version_info >=3D (3, 13): + if (ncpu :=3D os.process_cpu_count()) is not None: + return ncpu + raise RuntimeError("os.process_cpu_count() returned None") + # See https://github.com/python/cpython/blob/b61fece/Lib/os.py#L1175-L11= 86. + if sys.platform !=3D "darwin": + return len(os.sched_getaffinity(0)) + if (ncpu :=3D os.cpu_count()) is not None: + return ncpu + raise RuntimeError("os.cpu_count() returned None") =20 def add_common_opts(parser: argparse.ArgumentParser) -> None: parser.add_argument('--build_dir', --=20 2.47.0 From nobody Mon Nov 25 14:59:25 2024 Received: from mail-qk1-f171.google.com (mail-qk1-f171.google.com [209.85.222.171]) (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 5CA512161F6; Fri, 25 Oct 2024 21:04:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729890255; cv=none; b=OFjjwCtZAHrQVAwntFJJ1ppthp7VnFKMk9H/mw8RMT6vL9xn5qrWpO1UIEIOcjp+y572amqZtrI99uzaiy2zGASqobVs8b4+sxA8Sr4LaANrh53LyxK7PRwUsZ2b9gRXamuObR03xyT8LuCpn6ztXF+7Zg4eSZEMBBJ6B0krfqo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729890255; c=relaxed/simple; bh=ZTqBXUsCMjXnl83i92Nu+/DV25tDzAgk0A0CVeIit9s=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=McQX+7OGUXRR2a+fZmVSfC8Ocxcs5438H6iuiMu/n0Ck1HJp6INT2ypJ+Q8wqLWkjWR0wRg64QPDicwNNm4w/egBVOJh+49y6vAsPCrDSVfludeuH5aLDIQeiE/7nBo/BqjQ6pdjHQzk8ciL1az0LLkVFcV5FVM8Arsg17qEYOA= 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=UFbAoVbu; arc=none smtp.client-ip=209.85.222.171 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="UFbAoVbu" Received: by mail-qk1-f171.google.com with SMTP id af79cd13be357-7b12a02596aso160520785a.2; Fri, 25 Oct 2024 14:04:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729890252; x=1730495052; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=KdrwVQGek2veJ9C+SeMpvoGTn32i6qalpt1cR6XqlsQ=; b=UFbAoVbuxs2OxZ6AbtuH8Wxl0jAvQduQ/0FfWDZYMmu+Ey38AblpEGpOdwiCxgtzwY MmE2Es2K46IWpvC+JRosyao0zyK5CjLUQpc/uEtg+w9rkeIlvn0w4zQ/lRZjPe1UxHDR PCeUypjXMvvx1LDDVItQK8pdeuRN7jfE3XWW0zR6GlOEz3oDCVL4NTFvaU7vnXLnM1Cj 4K8wyK+hr4kcQxIiZ2JOjsdwvXOs/Gweely6HltFSNRF1HWXwuriXgY0l4fHfVUVhbFR n9fB8Z807j0thmLZjpenZyAcWFx2l+MBCggHQ8gnIqDSgLnoqTl1g0meDa8fyZy8NF1R il+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729890252; x=1730495052; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KdrwVQGek2veJ9C+SeMpvoGTn32i6qalpt1cR6XqlsQ=; b=XL9tIRKRlqGRrJPN+MGh42cn6izcmZdXvVi0ibQIQtzAmkoOoXZpEMopfp0fLLLL9y 7vgAft4anTXMD5bwJuhFCyq8oicm4frR0eM12/FD7GdaYj1us3UoKb45tTbFAzy7m9Mz ffjSCmdi7+S8VxbRqzE3ISDjFKkO/mpSGGIIVNbnPyotbNpDlNx0P5X29S89P6W7EfSD UTlLA+CEqB3/1NZ6rKgXAEVIRWWa1C73be/Rx8TvOuF6jGZ/NoHCQCR5oyMRju8ZnKZ5 LmLk4VgytSe/CoZ28AuSCGI8tA6bLjDEZ0i76WHgHyb88JQa/K2oBhIugGMRnW21tM/j kcRg== X-Forwarded-Encrypted: i=1; AJvYcCVYEwRUvHrKDgkPRi+mtC5oEHdjYWEoS8Jl3SR1KaWyrQOcfaiWTRViCap5O1W+gfKk5e436x+FHtBotys=@vger.kernel.org X-Gm-Message-State: AOJu0YysTUMiGLVpcUjRMGYRsFqs5OhwMxWOSPLwsTChbaCI/PJIIsRn PpNtP+kofZMiVcYVX1eZ+ph/yjLAFrUOG9nnr99QeTWtPUcoIe4R X-Google-Smtp-Source: AGHT+IGM0/WmKBbfrLxcsACgUSxPCaWBcJfuFn4svdSAvL3T2T7jPpCY+5Wm+/oRSjFd5YZf+3IFgg== X-Received: by 2002:a05:620a:4623:b0:7af:c856:820 with SMTP id af79cd13be357-7b193f3e0b8mr111163485a.46.1729890252100; Fri, 25 Oct 2024 14:04:12 -0700 (PDT) Received: from 156.1.168.192.in-addr.arpa (pool-100-37-170-231.nycmny.fios.verizon.net. [100.37.170.231]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b18d27be4csm91036185a.15.2024.10.25.14.04.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2024 14:04:10 -0700 (PDT) From: Tamir Duberstein Date: Fri, 25 Oct 2024 17:03:54 -0400 Subject: [PATCH 2/2] kunit: enable hardware acceleration when available Precedence: bulk X-Mailing-List: linux-kernel@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 Message-Id: <20241025-kunit-qemu-accel-macos-v1-2-2f30c26192d4@gmail.com> References: <20241025-kunit-qemu-accel-macos-v1-0-2f30c26192d4@gmail.com> In-Reply-To: <20241025-kunit-qemu-accel-macos-v1-0-2f30c26192d4@gmail.com> To: Brendan Higgins , David Gow , Rae Moar Cc: linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, Tamir Duberstein X-Mailer: b4 0.15-dev Use KVM or HVF if supported by the QEMU binary and available on the system. This produces a nice improvement on my Apple M3 Pro running macOS 14.7: Before: ./tools/testing/kunit/kunit.py exec --arch arm64 [HH:MM:SS] Elapsed time: 10.145s After: ./tools/testing/kunit/kunit.py exec --arch arm64 [HH:MM:SS] Elapsed time: 1.773s Signed-off-by: Tamir Duberstein --- tools/testing/kunit/kunit_kernel.py | 26 +++++++++++++++++++++++++- tools/testing/kunit/qemu_configs/arm64.py | 2 +- 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kuni= t_kernel.py index 61931c4926fd6645f2c62dd13f9842a432ec4167..10cacf5a3c443bacd6c074647e4= bddfc31599cf8 100644 --- a/tools/testing/kunit/kunit_kernel.py +++ b/tools/testing/kunit/kunit_kernel.py @@ -116,7 +116,8 @@ class LinuxSourceTreeOperationsQemu(LinuxSourceTreeOper= ations): =20 def start(self, params: List[str], build_dir: str) -> subprocess.Popen: kernel_path =3D os.path.join(build_dir, self._kernel_path) - qemu_command =3D ['qemu-system-' + self._qemu_arch, + qemu_binary =3D 'qemu-system-' + self._qemu_arch + qemu_command =3D [qemu_binary, '-nodefaults', '-m', '1024', '-kernel', kernel_path, @@ -124,6 +125,29 @@ class LinuxSourceTreeOperationsQemu(LinuxSourceTreeOpe= rations): '-no-reboot', '-nographic', '-serial', self._serial] + self._extra_qemu_params + accelerators =3D { + line.strip() + for line in subprocess.check_output([qemu_binary, "-accel", "help"], te= xt=3DTrue).splitlines() + if line and line.islower() + } + if 'kvm' in accelerators: + try: + with open('/dev/kvm', 'rb+'): + qemu_command.extend(['-accel', 'kvm']) + except OSError as e: + print(e) + elif 'hvf' in accelerators: + try: + for line in subprocess.check_output(['sysctl', 'kern.hv_support'], tex= t=3DTrue).splitlines(): + if not line: + continue + key, value =3D line.split(':') + if key =3D=3D 'kern.hv_support' and bool(value): + qemu_command.extend(['-accel', 'hvf']) + break + except subprocess.CalledProcessError as e: + print(e) + # Note: shlex.join() does what we want, but requires python 3.8+. print('Running tests with:\n$', ' '.join(shlex.quote(arg) for arg in qem= u_command)) return subprocess.Popen(qemu_command, diff --git a/tools/testing/kunit/qemu_configs/arm64.py b/tools/testing/kuni= t/qemu_configs/arm64.py index d3ff27024755411441f910799be30399295c9541..5c44d3a87e6dd2cd6b086138186= a277a1473585b 100644 --- a/tools/testing/kunit/qemu_configs/arm64.py +++ b/tools/testing/kunit/qemu_configs/arm64.py @@ -9,4 +9,4 @@ CONFIG_SERIAL_AMBA_PL011_CONSOLE=3Dy''', qemu_arch=3D'aarch64', kernel_path=3D'arch/arm64/boot/Image.gz', kernel_command_line=3D'console=3DttyAMA0', - extra_qemu_params=3D['-machine', 'virt', '-cpu', 'max,pauth-impdef= =3Don']) + extra_qemu_params=3D['-machine', 'virt', '-cpu', 'max']) --=20 2.47.0