[PATCH v20 15/21] tests/avocado: s390x cpu topology polarisation

[Pierre Morel]

Polarization is changed on a request from the guest.
Let's verify the polarization is accordingly set by QEMU.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
 tests/avocado/s390_topology.py | 38 ++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/tests/avocado/s390_topology.py b/tests/avocado/s390_topology.py
index ce119a095e..30d3c0d0cb 100644
--- a/tests/avocado/s390_topology.py
+++ b/tests/avocado/s390_topology.py
@@ -104,6 +104,15 @@ def kernel_init(self):
                          '-initrd', initrd_path,
                          '-append', kernel_command_line)
 
+    def system_init(self):
+        self.log.info("System init")
+        exec_command(self, 'mount proc -t proc /proc')
+        time.sleep(0.2)
+        exec_command(self, 'mount sys -t sysfs /sys')
+        time.sleep(0.2)
+        exec_command_and_wait_for_pattern(self,
+                '/bin/cat /sys/devices/system/cpu/dispatching', '0')
+
     def test_single(self):
         self.kernel_init()
         self.vm.launch()
@@ -206,3 +215,32 @@ def test_hotplug_full(self):
         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 test_polarisation(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_for_console_pattern('no job control')
+
+        self.system_init()
+        self.check_topology(0, 0, 0, 0, 'medium', 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, 'medium', 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, 'medium', False)
-- 
2.31.1