[PATCH v18 15/17] tests/avocado: s390x cpu topology entitlement tests

[Pierre Morel <pmorel@linux.ibm.com>]

This test takes care to check the changes on different entitlements
when the guest requests a polarization change.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 tests/avocado/s390_topology.py | 56 ++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/tests/avocado/s390_topology.py b/tests/avocado/s390_topology.py
index 70bd3a8b5a..c6ee46fb52 100644
--- a/tests/avocado/s390_topology.py
+++ b/tests/avocado/s390_topology.py
@@ -230,3 +230,59 @@ def test_polarisation(self):
                 '/bin/cat /sys/devices/system/cpu/dispatching', '0')
 
         self.check_topology(0, 0, 0, 0, 'horizontal', False)
+
+    def test_set_cpu_topology_entitlement(self):
+        """
+        This test verifies that QEMU modifies the polarization
+        after a guest request.
+
+        :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')
+        self.vm.add_args('-device', 'z14-s390x-cpu,core-id=2')
+        self.vm.add_args('-device', 'z14-s390x-cpu,core-id=3')
+        self.vm.launch()
+        self.wait_for_console_pattern('no job control')
+
+        self.system_init()
+
+        res = self.vm.qmp('set-cpu-topology',
+                          {'core-id': 0, 'entitlement': 'low'})
+        self.assertEqual(res['return'], {})
+        res = self.vm.qmp('set-cpu-topology',
+                          {'core-id': 1, 'entitlement': 'medium'})
+        self.assertEqual(res['return'], {})
+        res = self.vm.qmp('set-cpu-topology',
+                          {'core-id': 2, 'entitlement': 'high'})
+        self.assertEqual(res['return'], {})
+        res = self.vm.qmp('set-cpu-topology',
+                          {'core-id': 3, 'entitlement': 'high'})
+        self.assertEqual(res['return'], {})
+        self.check_topology(0, 0, 0, 0, 'horizontal', False)
+        self.check_topology(1, 0, 0, 0, 'horizontal', False)
+        self.check_topology(2, 1, 0, 0, 'horizontal', False)
+        self.check_topology(3, 1, 0, 0, 'horizontal', False)
+
+        exec_command(self, 'echo 1 > /sys/devices/system/cpu/dispatching')
+        time.sleep(0.2)
+        exec_command_and_wait_for_pattern(self,
+                '/bin/cat /sys/devices/system/cpu/dispatching', '1')
+
+        self.check_topology(0, 0, 0, 0, 'low', False)
+        self.check_topology(1, 0, 0, 0, 'medium', False)
+        self.check_topology(2, 1, 0, 0, 'high', False)
+        self.check_topology(3, 1, 0, 0, 'high', False)
+
+        exec_command(self, 'echo 0 > /sys/devices/system/cpu/dispatching')
+        time.sleep(0.2)
+        exec_command_and_wait_for_pattern(self,
+                '/bin/cat /sys/devices/system/cpu/dispatching', '0')
+
+        self.check_topology(0, 0, 0, 0, 'horizontal', False)
+        self.check_topology(1, 0, 0, 0, 'horizontal', False)
+        self.check_topology(2, 1, 0, 0, 'horizontal', False)
+        self.check_topology(3, 1, 0, 0, 'horizontal', False)
-- 
2.31.1