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tests/avocado: s390x cpu topology entitlement tests 

Test changes in the entitlement from both a guest and a host point of
view, depending on the polarization.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-18-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Pierre Morel 2023-10-16 20:39:21 +02:00 committed by Thomas Huth
parent cb042c73f3
commit 16ab722edb
1 changed files with 62 additions and 0 deletions
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62
tests/avocado/s390_topology.py
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@ -243,3 +243,65 @@ class S390CPUTopology(QemuSystemTest):
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)