1 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 from autotest_lib.client.common_lib import error 7 from autotest_lib.server import test, autotest 8 9 10 class platform_TrackpadStressServer(test.test): 11 """ 12 Make sure the trackpad continues to operate after a kernel panic. 13 """ 14 version = 1 15 16 def _run_client_test(self, client_at, verify_only=False): 17 self.job.set_state('client_passed', None) 18 client_at.run_test(self.client_test) 19 return self.job.get_state('client_passed') 20 21 def run_once(self, host=None): 22 self.client = host 23 self.client_test = 'platform_TrackpadStress' 24 25 logging.info('TrackpadStressServer: start client test') 26 client_at = autotest.Autotest(self.client) 27 if not self._run_client_test(client_at): 28 raise error.TestFail('Client test failed precheck state') 29 30 # Configure the client to reboot on a kernel panic 31 self.client.run('sysctl kernel.panic|grep "kernel.panic = -1"') 32 self.client.run('sysctl kernel.panic_on_oops|' 33 'grep "kernel.panic_on_oops = 1"') 34 35 boot_id = self.client.get_boot_id() 36 37 # Make it rain 38 command = 'echo BUG > /sys/kernel/debug/provoke-crash/DIRECT' 39 command += '|| echo bug > /proc/breakme' 40 logging.info('TrackpadStressServer: executing "%s" on %s', 41 command, self.client.hostname) 42 try: 43 # Simply writing to the crash interface resets the target 44 # immediately, leaving files unsaved to disk and the master ssh 45 # connection wedged for a long time. The sequence below borrowed 46 # from logging_KernelCrashServer.py makes sure that the test 47 # proceeds smoothly. 48 self.client.run( 49 'sh -c "sync; sleep 1; %s" >/dev/null 2>&1 &' % command) 50 except error.AutoservRunError, e: 51 # It is expected that this will cause a non-zero exit status. 52 pass 53 54 self.client.wait_for_restart( 55 down_timeout=60, 56 down_warning=60, 57 old_boot_id=boot_id, 58 # Extend the default reboot timeout as some targets take 59 # longer than normal before ssh is available again. 60 timeout=self.client.DEFAULT_REBOOT_TIMEOUT * 4) 61 62 # Check that the trackpad is running 63 # Todo, need an additional client test. 64 if not self._run_client_test(client_at, verify_only=True): 65 raise error.TestFail('Client test failed final state verification.' 66 'The trackpad is not running after kernel ' 67 'panic.') 68 69 70
