This patch to test kvm event tracing using "perf kvm".
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=817284
https://lkml.org/lkml/2012/6/1/176
http://www.linux-kvm.org/page/Perf_events
Signed-off-by: pradeep K Surisetty <psuri...@linux.vnet.ibm.com>
new file: client/tests/kvm/tests/perf_kvm.py
modified: client/virt/subtests.cfg.sample
---
client/tests/kvm/tests/perf_kvm.py | 42 ++++++++++++++++++++++++++++++++++++
client/virt/subtests.cfg.sample | 7 ++++++
2 files changed, 49 insertions(+)
create mode 100644 client/tests/kvm/tests/perf_kvm.py
diff --git a/client/tests/kvm/tests/perf_kvm.py
b/client/tests/kvm/tests/perf_kvm.py
new file mode 100644
index 0000000..f4f8e5f
--- /dev/null
+++ b/client/tests/kvm/tests/perf_kvm.py
@@ -0,0 +1,42 @@
+import os, commands, glob
+from autotest.client.shared import error
+from autotest.client.virt import virt_test_utils
+
+
+def run_perf_kvm(test, params, env):
+ """
+ run perf tool to get kvm events info
+
+ @param test: kvm test object
+ @param params: Dictionary with the test parameters
+ @param env: Dictionary with test environment.
+ """
+ vm = env.get_vm(params["main_vm"])
+ vm.verify_alive()
+
+ test_timeout = int(params.get("test_timeout", 240))
+ login_timeout = int(params.get("login_timeout", 360))
+ transfer_timeout = int(params.get("transfer_timeout", 240))
+ perf_record_timeout = int(params.get("perf_record_timeout", 240))
+ vm_kallsyms_path = "/tmp/guest_kallsyms"
+ vm_modules_path = "/tmp/guest_modules"
+
+ # Prepare test environment in guest
+ session = vm.wait_for_login(timeout=login_timeout)
+
+ session.cmd("cat /proc/kallsyms > %s" % vm_kallsyms_path)
+ session.cmd("cat /proc/modules > %s" % vm_modules_path)
+
+ vm.copy_files_from("/tmp/guest_kallsyms", "/tmp", timeout=transfer_timeout)
+ vm.copy_files_from("/tmp/guest_modules", "/tmp", timeout=transfer_timeout)
+
+ perf_record_cmd = "perf kvm --host --guest --guestkallsyms=%s" %
vm_kallsyms_path
+ perf_record_cmd += " --guestmodules=%s record -a -o /tmp/perf.data sleep
%s " % (vm_modules_path, perf_record_timeout)
+ perf_report_cmd = "perf kvm --host --guest --guestkallsyms=%s" %
vm_kallsyms_path
+ perf_report_cmd += " --guestmodules=%s report -i /tmp/perf.data --force "
% vm_modules_path
+
+ os.system(perf_record_cmd)
+ os.system(perf_report_cmd)
+
+ session.close()
+
diff --git a/client/virt/subtests.cfg.sample b/client/virt/subtests.cfg.sample
index 46ebe6b..4f0f8ab 100644
--- a/client/virt/subtests.cfg.sample
+++ b/client/virt/subtests.cfg.sample
@@ -895,6 +895,13 @@ variants:
type = smbios_table
start_vm = no
+ - perf_kvm: install setup image_copy unattended_install.cdrom
+ type = perf_kvm
+ kallsyms_cmd = "cat /proc/kallsyms > /tmp/guest_kallsyms"
+ modules_cmd = "cat /proc/modules > /tmp/geust_modules"
+ transfer_timeout = 100
+ perf_record_timeout = 100
+
- softlockup: install setup unattended_install.cdrom
only Linux
type = softlockup
--
1.7.10
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