On 5/22/23 21:38, Nina Schoetterl-Glausch wrote:
On Tue, 2023-04-25 at 18:14 +0200, Pierre Morel wrote:Introduction of the s390x cpu topology core functions and basic tests. We test the corelation between the command line and the QMP results in query-cpus-fast for various CPU topology. Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx> --- MAINTAINERS | 1 + tests/avocado/s390_topology.py | 208 +++++++++++++++++++++++++++++++++ 2 files changed, 209 insertions(+) create mode 100644 tests/avocado/s390_topology.py diff --git a/MAINTAINERS b/MAINTAINERS index fe5638e31d..41419840b0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1662,6 +1662,7 @@ F: hw/s390x/cpu-topology.c F: target/s390x/kvm/cpu_topology.c F: docs/devel/s390-cpu-topology.rst F: docs/system/s390x/cpu-topology.rst +F: tests/avocado/s390_topology.pyX86 Machines------------ diff --git a/tests/avocado/s390_topology.py b/tests/avocado/s390_topology.py new file mode 100644 index 0000000000..ce119a095e --- /dev/null +++ b/tests/avocado/s390_topology.py @@ -0,0 +1,208 @@ +# Functional test that boots a Linux kernel and checks the console +# +# Copyright IBM Corp. 2023 +# +# Author: +# Pierre Morel <pmorel@xxxxxxxxxxxxx> +# +# This work is licensed under the terms of the GNU GPL, version 2 or +# later. See the COPYING file in the top-level directory. + +import os +import shutil +import time + +from avocado_qemu import QemuSystemTest +from avocado_qemu import exec_command +from avocado_qemu import exec_command_and_wait_for_pattern +from avocado_qemu import interrupt_interactive_console_until_pattern +from avocado_qemu import wait_for_console_pattern +from avocado.utils import process +from avocado.utils import archive + + +class LinuxKernelTest(QemuSystemTest):I'd get rid of this class, unless you plan to use it for more children.
OK
+ KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 ' + + def wait_for_console_pattern(self, success_message, vm=None):You always use the same args for this function, I'd refactor it into def wait_until_booted(self):
OK
+ wait_for_console_pattern(self, success_message, + failure_message='Kernel panic - not syncing', + vm=vm) + + +class S390CPUTopology(LinuxKernelTest): + """ + S390x CPU topology consist of 4 topology layers, from bottom to top, + the cores, sockets, books and drawers and 2 modifiers attributes, + the entitlement and the dedication. + See: docs/system/s390x/cpu-topology.rst. + + S390x CPU topology is setup in different ways: + - implicitely from the '-smp' argument by completing each topology + level one after the other begining with drawer 0, book 0 and socket 0. + - explicitely from the '-device' argument on the QEMU command line + - explicitely by hotplug of a new CPU using QMP or HMP + - it is modified by using QMP 'set-cpu-topology' + + The S390x modifier attribute entitlement depends on the machine + polarization, which can be horizontal or vertical. + The polarization is changed on a request from the guest. + """ + timeout = 90 + + + def check_topology(self, c, s, b, d, e, t): + res = self.vm.qmp('query-cpus-fast') + line = res['return'] + for x in line:for cpu in cpus
Yes indeed we are working with CPU so it is better
+ core = x['props']['core-id'] + socket = x['props']['socket-id'] + book = x['props']['book-id'] + drawer = x['props']['drawer-id'] + entitlement = x['entitlement'] + dedicated = x['dedicated'] + if core == c: + self.assertEqual(drawer, d) + self.assertEqual(book, b) + self.assertEqual(socket, s) + self.assertEqual(entitlement, e) + self.assertEqual(dedicated, t) + + def kernel_init(self): + """ + We need a kernel supporting the CPU topology. + We need a minimal root filesystem with a shell. + """ + kernel_url = ('https://archives.fedoraproject.org/pub/archive' + '/fedora-secondary/releases/35/Server/s390x/os' + '/images/kernel.img') + kernel_hash = '0d1aaaf303f07cf0160c8c48e56fe638' + kernel_path = self.fetch_asset(kernel_url, algorithm='md5', + asset_hash=kernel_hash) + + initrd_url = ('https://archives.fedoraproject.org/pub/archive' + '/fedora-secondary/releases/35/Server/s390x/os' + '/images/initrd.img') + initrd_hash = 'a122057d95725ac030e2ec51df46e172' + initrd_path_xz = self.fetch_asset(initrd_url, algorithm='md5', + asset_hash=initrd_hash) + initrd_path = os.path.join(self.workdir, 'initrd-raw.img') + archive.lzma_uncompress(initrd_path_xz, initrd_path) + + self.vm.set_console() + kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE + + 'root=/dev/ram ' + 'selinux=0 ' + 'rdinit=/bin/sh') + self.vm.add_args('-nographic', + '-enable-kvm', + '-cpu', 'z14,ctop=on', + '-m', '512', + '-name', 'Some Guest Name', + '-uuid', '30de4fd9-b4d5-409e-86a5-09b387f70bfa',What is the meaning of those flags (name & uuid), do you need them? Where does the value for the uuid come from?
I do not need them
+ '-kernel', kernel_path, + '-initrd', initrd_path, + '-append', kernel_command_line) + + def test_single(self):Why no comment and avocado tags here?
just forgot thanks for the catch
+ self.kernel_init() + self.vm.launch() + self.wait_for_console_pattern('no job control') + self.check_topology(0, 0, 0, 0, 'medium', False) + + def test_default(self): + """ + This test checks the implicite topology.s/implicite/implicit/
thx
+ + :avocado: tags=arch:s390x + :avocado: tags=machine:s390-ccw-virtio + """ + self.kernel_init() + self.vm.add_args('-smp', + '13,drawers=2,books=2,sockets=3,cores=2,maxcpus=24') + self.vm.launch() + self.wait_for_console_pattern('no job control') + self.check_topology(0, 0, 0, 0, 'medium', False) + self.check_topology(1, 0, 0, 0, 'medium', False) + self.check_topology(2, 1, 0, 0, 'medium', False) + self.check_topology(3, 1, 0, 0, 'medium', False) + self.check_topology(4, 2, 0, 0, 'medium', False) + self.check_topology(5, 2, 0, 0, 'medium', False) + self.check_topology(6, 0, 1, 0, 'medium', False) + self.check_topology(7, 0, 1, 0, 'medium', False) + self.check_topology(8, 1, 1, 0, 'medium', False) + self.check_topology(9, 1, 1, 0, 'medium', False) + self.check_topology(10, 2, 1, 0, 'medium', False) + self.check_topology(11, 2, 1, 0, 'medium', False) + self.check_topology(12, 0, 0, 1, 'medium', False) + + def test_move(self): + """ + This test checks the topology modification by moving a CPU + to another socket: CPU 0 is moved from socket 0 to socket 2. + + :avocado: tags=arch:s390x + :avocado: tags=machine:s390-ccw-virtio + """ + self.kernel_init() + self.vm.add_args('-smp', + '1,drawers=2,books=2,sockets=3,cores=2,maxcpus=24') + self.vm.launch() + self.wait_for_console_pattern('no job control') + + self.check_topology(0, 0, 0, 0, 'medium', False) + res = self.vm.qmp('set-cpu-topology', + {'core-id': 0, 'socket-id': 2, 'entitlement': 'low'}) + self.assertEqual(res['return'], {}) + self.check_topology(0, 2, 0, 0, 'low', False) + + def test_hotplug(self): + """ + This test verifies that a CPU defined with '-device' command line + argument finds its right place inside the topology. + + :avocado: tags=arch:s390x + :avocado: tags=machine:s390-ccw-virtio + """ + self.kernel_init() + self.vm.add_args('-smp', + '1,drawers=2,books=2,sockets=3,cores=2,maxcpus=24') + self.vm.add_args('-device', 'z14-s390x-cpu,core-id=10') + self.vm.launch() + self.wait_for_console_pattern('no job control') + + self.check_topology(10, 2, 1, 0, 'medium', False) + + def test_hotplug_full(self):I would unite this test with the previous one. Both test -device with some values missing.
OK
+ """ + This test verifies that a hotplugged fully defined with '-device' + command line argument finds its right place inside the topology. + + :avocado: tags=arch:s390x + :avocado: tags=machine:s390-ccw-virtio + """ + self.kernel_init() + self.vm.add_args('-smp', + '1,drawers=2,books=2,sockets=3,cores=2,maxcpus=24') + self.vm.add_args('-device', + 'z14-s390x-cpu,' + 'core-id=1,socket-id=0,book-id=1,drawer-id=1,entitlement=low') + self.vm.add_args('-device', + 'z14-s390x-cpu,' + 'core-id=2,socket-id=0,book-id=1,drawer-id=1,entitlement=medium') + self.vm.add_args('-device', + 'z14-s390x-cpu,' + 'core-id=3,socket-id=1,book-id=1,drawer-id=1,entitlement=high') + self.vm.add_args('-device', + 'z14-s390x-cpu,' + 'core-id=4,socket-id=1,book-id=1,drawer-id=1') + self.vm.add_args('-device', + 'z14-s390x-cpu,' + 'core-id=5,socket-id=2,book-id=1,drawer-id=1,dedicated=true') + self.vm.launch() + self.wait_for_console_pattern('no job control') + self.check_topology(1, 0, 1, 1, 'low', False) + self.check_topology(2, 0, 1, 1, 'medium', False) + self.check_topology(3, 1, 1, 1, 'high', False) + self.check_topology(4, 1, 1, 1, 'medium', False) + self.check_topology(5, 2, 1, 1, 'high', True)Looks good all in all.
Thanks for the comment, I update all. Regards, Pierre
