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| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | tests/acceptance/replay_kernel.py | 73 |
2 files changed, 74 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 7b1262e..dc61830 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2534,6 +2534,7 @@ F: net/filter-replay.c F: include/sysemu/replay.h F: docs/replay.txt F: stubs/replay.c +F: tests/acceptance/replay_kernel.py IOVA Tree M: Peter Xu <peterx@redhat.com> diff --git a/tests/acceptance/replay_kernel.py b/tests/acceptance/replay_kernel.py new file mode 100644 index 0000000..90986ca --- /dev/null +++ b/tests/acceptance/replay_kernel.py @@ -0,0 +1,73 @@ +# 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 + +from avocado_qemu import wait_for_console_pattern +from avocado.utils import archive +from avocado.utils import process +from boot_linux_console import LinuxKernelTest + +class ReplayKernel(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 = 90 + KERNEL_COMMON_COMMAND_LINE = 'printk.time=1 panic=-1 ' + + def run_vm(self, kernel_path, kernel_command_line, console_pattern, + record, shift, args, replay_path): + 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)) + 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_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)) |