[PATCH 1/4] KVM test: Add monotonic_time into the guest test

[Jason Wang <jasowang@redhat.com>]

Monotonic_time is used to test gettimeofday(), TSC and
clock_gettime(CLOCK_MONOTONIC) which is useful to test the virutal
timer device.

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 .../kvm/autotest_control/monotonic_time.control    |   37 ++++++++++++++++++++
 client/tests/kvm/tests_base.cfg.sample             |    3 ++
 2 files changed, 40 insertions(+), 0 deletions(-)
 create mode 100644 client/tests/kvm/autotest_control/monotonic_time.control

diff --git a/client/tests/kvm/autotest_control/monotonic_time.control b/client/tests/kvm/autotest_control/monotonic_time.control
new file mode 100644
index 0000000..4dbfec4
--- /dev/null
+++ b/client/tests/kvm/autotest_control/monotonic_time.control
@@ -0,0 +1,37 @@
+NAME = 'monotonic_time'
+AUTHOR = 'Michael Davidson <md@google.com>'
+TIME = 'MEDIUM'
+TEST_CLASS = 'Kernel'
+TEST_CATEGORY = 'Functional'
+TEST_TYPE = 'client'
+DOC = """
+monotonic_time checks various time interfaces:
+  gettimeofday()
+  clock_gettime(CLOCK_MONTONIC)
+  TSC
+for monotonicity.
+
+Based on time-warp-test.c by Ingo Molnar.
+"""
+
+#
+# Test gettimeofday(), TSC, and clock_gettime(CLOCK_MONOTONIC)
+#
+# Tests run for 'duration' seconds and check that the selected
+# time interface does not go backwards by more than 'threshold'.
+#
+# Note that the threshold value has the same resolution as the
+# clock source:
+#   gettimeofday()                 - microseconds
+#   clock_gettime(CLOCK_MONOTONIC) - nanoseconds
+#   TSC                            - CPU clock cycles
+#
+#
+job.run_test('monotonic_time', tag='gtod',  test_type='gtod',
+             duration=300, threshold=0)
+
+job.run_test('monotonic_time', tag='clock', test_type='clock',
+             duration=300, threshold=0)
+
+job.run_test('monotonic_time', tag='tsc',   test_type='tsc',
+             duration=300, threshold=0)
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index 9963a44..2af6a05 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -133,6 +133,9 @@ variants:
             - cpu_hotplug:
                 test_name = cpu_hotplug
                 test_control_file = cpu_hotplug.control
+            - monotonic_time:
+                test_name = monotonic_time
+                test_control_file = monotonic_time.control
 
     - linux_s3:     install setup unattended_install
         type = linux_s3