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Diffstat (limited to 'tests/avocado/s390_topology.py')
| -rw-r--r-- | tests/avocado/s390_topology.py | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/tests/avocado/s390_topology.py b/tests/avocado/s390_topology.py deleted file mode 100644 index 9154ac8..0000000 --- a/tests/avocado/s390_topology.py +++ /dev/null @@ -1,439 +0,0 @@ -# Functional test that boots a Linux kernel and checks the console -# -# Copyright IBM Corp. 2023 -# -# Author: -# Pierre Morel <pmorel@linux.ibm.com> -# -# 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 S390CPUTopology(QemuSystemTest): - """ - S390x CPU topology consists 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: - - implicitly from the '-smp' argument by completing each topology - level one after the other beginning with drawer 0, book 0 and - socket 0. - - explicitly from the '-device' argument on the QEMU command line - - explicitly 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 - event_timeout = 10 - - KERNEL_COMMON_COMMAND_LINE = ('printk.time=0 ' - 'root=/dev/ram ' - 'selinux=0 ' - 'rdinit=/bin/sh') - - def wait_until_booted(self): - wait_for_console_pattern(self, 'no job control', - failure_message='Kernel panic - not syncing', - vm=None) - - def check_topology(self, c, s, b, d, e, t): - res = self.vm.qmp('query-cpus-fast') - cpus = res['return'] - for cpu in cpus: - core = cpu['props']['core-id'] - socket = cpu['props']['socket-id'] - book = cpu['props']['book-id'] - drawer = cpu['props']['drawer-id'] - entitlement = cpu.get('entitlement') - dedicated = cpu.get('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 VM that supports CPU topology, - currently this only the case when using KVM, not TCG. - We need a kernel supporting the CPU topology. - We need a minimal root filesystem with a shell. - """ - self.require_accelerator("kvm") - 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 - self.vm.add_args('-nographic', - '-enable-kvm', - '-cpu', 'max,ctop=on', - '-m', '512', - '-kernel', kernel_path, - '-initrd', initrd_path, - '-append', kernel_command_line) - - def system_init(self): - self.log.info("System init") - exec_command_and_wait_for_pattern(self, - """ mount proc -t proc /proc; - mount sys -t sysfs /sys; - cat /sys/devices/system/cpu/dispatching """, - '0') - - def test_single(self): - """ - This test checks the simplest topology with a single CPU. - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - self.check_topology(0, 0, 0, 0, 'medium', False) - - def test_default(self): - """ - This test checks the implicit topology. - - :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_until_booted() - 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_until_booted() - - 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_dash_device(self): - """ - This test verifies that a CPU defined with the '-device' - command line option 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', 'max-s390x-cpu,core-id=10') - self.vm.add_args('-device', - 'max-s390x-cpu,' - 'core-id=1,socket-id=0,book-id=1,drawer-id=1,entitlement=low') - self.vm.add_args('-device', - 'max-s390x-cpu,' - 'core-id=2,socket-id=0,book-id=1,drawer-id=1,entitlement=medium') - self.vm.add_args('-device', - 'max-s390x-cpu,' - 'core-id=3,socket-id=1,book-id=1,drawer-id=1,entitlement=high') - self.vm.add_args('-device', - 'max-s390x-cpu,' - 'core-id=4,socket-id=1,book-id=1,drawer-id=1') - self.vm.add_args('-device', - 'max-s390x-cpu,' - 'core-id=5,socket-id=2,book-id=1,drawer-id=1,dedicated=true') - - self.vm.launch() - self.wait_until_booted() - - self.check_topology(10, 2, 1, 0, 'medium', False) - 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) - - - def guest_set_dispatching(self, dispatching): - exec_command(self, - f'echo {dispatching} > /sys/devices/system/cpu/dispatching') - self.vm.event_wait('CPU_POLARIZATION_CHANGE', self.event_timeout) - exec_command_and_wait_for_pattern(self, - 'cat /sys/devices/system/cpu/dispatching', dispatching) - - - def test_polarization(self): - """ - This test verifies that QEMU modifies the entitlement change after - several guest polarization change requests. - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - - self.system_init() - res = self.vm.qmp('query-s390x-cpu-polarization') - self.assertEqual(res['return']['polarization'], 'horizontal') - self.check_topology(0, 0, 0, 0, 'medium', False) - - self.guest_set_dispatching('1'); - res = self.vm.qmp('query-s390x-cpu-polarization') - self.assertEqual(res['return']['polarization'], 'vertical') - self.check_topology(0, 0, 0, 0, 'medium', False) - - self.guest_set_dispatching('0'); - res = self.vm.qmp('query-s390x-cpu-polarization') - self.assertEqual(res['return']['polarization'], 'horizontal') - self.check_topology(0, 0, 0, 0, 'medium', False) - - - def check_polarization(self, polarization): - #We need to wait for the change to have been propagated to the kernel - exec_command_and_wait_for_pattern(self, - "\n".join([ - "timeout 1 sh -c 'while true", - 'do', - ' syspath="/sys/devices/system/cpu/cpu0/polarization"', - ' polarization="$(cat "$syspath")" || exit', - f' if [ "$polarization" = "{polarization}" ]; then', - ' exit 0', - ' fi', - ' sleep 0.01', - #searched for strings mustn't show up in command, '' to obfuscate - "done' && echo succ''ess || echo fail''ure", - ]), - "success", "failure") - - - def test_entitlement(self): - """ - This test verifies that QEMU modifies the entitlement - after a guest request and that the guest sees the change. - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - - self.system_init() - - self.check_polarization('horizontal') - self.check_topology(0, 0, 0, 0, 'medium', False) - - self.guest_set_dispatching('1') - self.check_polarization('vertical:medium') - self.check_topology(0, 0, 0, 0, 'medium', False) - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'low'}) - self.assertEqual(res['return'], {}) - self.check_polarization('vertical:low') - self.check_topology(0, 0, 0, 0, 'low', False) - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'medium'}) - self.assertEqual(res['return'], {}) - self.check_polarization('vertical:medium') - self.check_topology(0, 0, 0, 0, 'medium', False) - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'high'}) - self.assertEqual(res['return'], {}) - self.check_polarization('vertical:high') - self.check_topology(0, 0, 0, 0, 'high', False) - - self.guest_set_dispatching('0'); - self.check_polarization("horizontal") - self.check_topology(0, 0, 0, 0, 'high', False) - - - def test_dedicated(self): - """ - This test verifies that QEMU adjusts the entitlement correctly when a - CPU is made dedicated. - QEMU retains the entitlement value when horizontal polarization is in effect. - For the guest, the field shows the effective value of the entitlement. - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - - self.system_init() - - self.check_polarization("horizontal") - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'dedicated': True}) - self.assertEqual(res['return'], {}) - self.check_topology(0, 0, 0, 0, 'high', True) - self.check_polarization("horizontal") - - self.guest_set_dispatching('1'); - self.check_topology(0, 0, 0, 0, 'high', True) - self.check_polarization("vertical:high") - - self.guest_set_dispatching('0'); - self.check_topology(0, 0, 0, 0, 'high', True) - self.check_polarization("horizontal") - - - def test_socket_full(self): - """ - This test verifies that QEMU does not accept to overload a socket. - The socket-id 0 on book-id 0 already contains CPUs 0 and 1 and can - not accept any new CPU while socket-id 0 on book-id 1 is free. - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.add_args('-smp', - '3,drawers=2,books=2,sockets=3,cores=2,maxcpus=24') - self.vm.launch() - self.wait_until_booted() - - self.system_init() - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 2, 'socket-id': 0, 'book-id': 0}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 2, 'socket-id': 0, 'book-id': 1}) - self.assertEqual(res['return'], {}) - - def test_dedicated_error(self): - """ - This test verifies that QEMU refuses to lower the entitlement - of a dedicated CPU - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - - self.system_init() - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'dedicated': True}) - self.assertEqual(res['return'], {}) - - self.check_topology(0, 0, 0, 0, 'high', True) - - self.guest_set_dispatching('1'); - - self.check_topology(0, 0, 0, 0, 'high', True) - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'low', 'dedicated': True}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'low'}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'medium', 'dedicated': True}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'medium'}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'low', 'dedicated': False}) - self.assertEqual(res['return'], {}) - - res = self.vm.qmp('set-cpu-topology', - {'core-id': 0, 'entitlement': 'medium', 'dedicated': False}) - self.assertEqual(res['return'], {}) - - def test_move_error(self): - """ - This test verifies that QEMU refuses to move a CPU to an - nonexistent location - - :avocado: tags=arch:s390x - :avocado: tags=machine:s390-ccw-virtio - """ - self.kernel_init() - self.vm.launch() - self.wait_until_booted() - - self.system_init() - - res = self.vm.qmp('set-cpu-topology', {'core-id': 0, 'drawer-id': 1}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', {'core-id': 0, 'book-id': 1}) - self.assertEqual(res['error']['class'], 'GenericError') - - res = self.vm.qmp('set-cpu-topology', {'core-id': 0, 'socket-id': 1}) - self.assertEqual(res['error']['class'], 'GenericError') - - self.check_topology(0, 0, 0, 0, 'medium', False) |