testimage: performance improvements

Refactored processing of QEMU logs.
The original code read QEMU logs every 30 seconds, which
resulted in each test taking at least 30 seconds to finish.
In reality, most tests take only a few seconds.
Although the tests run in parallel, on systems with only a few
CPUs this can make a very noticable difference.

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>

lib/oeqa/controllers/zephyrtargetcontrol.py

@@ -0,0 +1,59 @@
+# Copyright (C) 2016-2017 Intel Corporation
+# Released under the MIT license (see COPYING.MIT)
+
+import os
+import sys
+import signal
+import logging
+
+from oeqa.core.target.__init__ import OETarget
+from oeqa.utils.qemuzephyrrunner import QemuZephyrRunner
+supported_fstypes = ['elf']
+
+class QemuTargetZephyr(OETarget):
+    def __init__(self, logger, ip, server_ip, timeout=300, user='root',
+            port=None, machine='', rootfs='', kernel='', kvm=False,
+            dump_dir='', dump_host_cmds='', display='', bootlog='',
+            tmpdir='', dir_image='', boottime=60):
+
+        super(QemuTargetZephyr, self).__init__(logger, ip, server_ip, timeout,
+                user, port)
+
+        self.ip = ip
+        self.server_ip = server_ip
+        self.machine = machine
+        self.rootfs = rootfs
+        self.qemulog = bootlog
+        self.kernel = kernel
+        self.kvm = kvm
+
+        # Log QemuRunner log output to a file
+        import oe.path
+        from oeqa.utils.qemuzephyrrunner import QemuZephyrRunner
+
+        self.qemurunnerlog = bootlog
+        logger = logging.getLogger('BitBake.QemuRunner')
+        loggerhandler = logging.FileHandler(self.qemurunnerlog)
+        loggerhandler.setFormatter(logging.Formatter("%(levelname)s: %(message)s"))
+        logger.addHandler(loggerhandler)
+
+        self.runner = QemuZephyrRunner(machine=machine, rootfs=rootfs, tmpdir=tmpdir,
+                                 deploy_dir_image=dir_image, display=display,
+                                 logfile=self.qemulog, boottime=boottime,
+                                 use_kvm=kvm, dump_dir=dump_dir,
+                                 dump_host_cmds=dump_host_cmds)
+
+
+    def start(self, params=None, extra_bootparams=None):
+        if self.runner.start(params, extra_bootparams=extra_bootparams):
+            self.ip = self.runner.ip
+            self.server_ip = self.runner.server_ip
+        else:
+            self.stop()
+            raise RuntimeError("FAILED to start qemu - check the task log and the boot log")
+
+    def stop(self):
+        self.runner.stop()
+
+    def serial_readline(self):
+        return self.runner.serial_readline()