new file mode 100644
@@ -0,0 +1,84 @@
+# Record/replay test that boots a Linux kernel
+#
+# Copyright (c) 2020 ISP RAS
+#
+# Author:
+# Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later. See the COPYING file in the top-level directory.
+
+import os
+import logging
+import time
+import subprocess
+
+from qemu_test.linuxkernel import LinuxKernelTest
+
+class ReplayKernelBase(LinuxKernelTest):
+ """
+ Boots a Linux kernel in record mode and checks that the console
+ is operational and the kernel command line is properly passed
+ from QEMU to the kernel.
+ Then replays the same scenario and verifies, that QEMU correctly
+ terminates.
+ """
+
+ timeout = 180
+ REPLAY_KERNEL_COMMAND_LINE = 'printk.time=1 panic=-1 '
+
+ def run_vm(self, kernel_path, kernel_command_line, console_pattern,
+ record, shift, args, replay_path):
+ # icount requires TCG to be available
+ self.require_accelerator('tcg')
+
+ logger = logging.getLogger('replay')
+ start_time = time.time()
+ vm = self.get_vm()
+ vm.set_console()
+ if record:
+ logger.info('recording the execution...')
+ mode = 'record'
+ else:
+ logger.info('replaying the execution...')
+ mode = 'replay'
+ vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s' %
+ (shift, mode, replay_path),
+ '-kernel', kernel_path,
+ '-append', kernel_command_line,
+ '-net', 'none',
+ '-no-reboot')
+ if args:
+ vm.add_args(*args)
+ vm.launch()
+ self.wait_for_console_pattern(console_pattern, vm)
+ if record:
+ vm.shutdown()
+ logger.info('finished the recording with log size %s bytes'
+ % os.path.getsize(replay_path))
+ self.run_replay_dump(replay_path)
+ logger.info('successfully tested replay-dump.py')
+ else:
+ vm.wait()
+ logger.info('successfully finished the replay')
+ elapsed = time.time() - start_time
+ logger.info('elapsed time %.2f sec' % elapsed)
+ return elapsed
+
+ def run_replay_dump(self, replay_path):
+ try:
+ subprocess.check_call(["./scripts/replay-dump.py",
+ "-f", replay_path],
+ stdout=subprocess.DEVNULL)
+ except subprocess.CalledProcessError:
+ self.fail('replay-dump.py failed')
+
+ def run_rr(self, kernel_path, kernel_command_line, console_pattern,
+ shift=7, args=None):
+ replay_path = os.path.join(self.workdir, 'replay.bin')
+ t1 = self.run_vm(kernel_path, kernel_command_line, console_pattern,
+ True, shift, args, replay_path)
+ t2 = self.run_vm(kernel_path, kernel_command_line, console_pattern,
+ False, shift, args, replay_path)
+ logger = logging.getLogger('replay')
+ logger.info('replay overhead {:.2%}'.format(t2 / t1 - 1))
Copy the ReplayKernelBase class from the avocado tests. We are going to need it to convert the related replay tests in the following patches. Signed-off-by: Thomas Huth <thuth@redhat.com> --- tests/functional/replay_kernel.py | 84 +++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 tests/functional/replay_kernel.py