def build(self, make_opts = '', logfile = '', extraversion='autotest'):
"""build the kernel
make_opts
additional options to make, if any
"""
os_dep.commands('gcc', 'make')
if logfile == '':
logfile = os.path.join(self.log_dir, 'kernel_build')
os.chdir(self.build_dir)
if extraversion:
self.extraversion(extraversion)
self.set_cross_cc()
# setup_config_file(config_file, config_overrides)
# Not needed on 2.6, but hard to tell -- handle failure
utils.system('make dep', ignore_status=True)
threads = 2 * utils.count_cpus()
build_string = 'make -j %d %s %s' % (threads, make_opts,
self.build_target)
# eg make bzImage, or make zImage
print build_string
utils.system(build_string)
if kernel_config.modules_needed('.config'):
utils.system('make -j %d modules' % (threads))
kernel_version = self.get_kernel_build_ver()
kernel_version = re.sub('-autotest', '', kernel_version)
self.logfile.write('BUILD VERSION: %s\n' % kernel_version)
utils.force_copy(self.build_dir+'/System.map',
self.results_dir)
def get_xfer_rate(src, dst):
"""Compute transfer rate from src to dst as Mbit/sec
Execute a copy from |src| to |dst| and returns the file copy transfer rate
in Mbit/sec
@param src, dst: paths for source and destination
@return trasfer rate (float) in Mbit/sec
"""
assert os.path.isfile(src)
assert os.path.isfile(dst)
utils.drop_caches()
start = datetime.datetime.now()
utils.force_copy(src, dst)
end = datetime.datetime.now()
delta = end - start
# compute seconds (as float) from microsecs
delta_secs = delta.seconds + (delta.microseconds / USECS_IN_SEC)
# compute Mbit from bytes
size_Mbit = (os.path.getsize(src) * 8.0) / (1000 * 1000)
logging.info(
'file trasferred: size (Mbits): %f, start: %f, end: %d,'
' delta (secs): %f', size_Mbit,
start.second + start.microsecond / USECS_IN_SEC,
end.second + end.microsecond / USECS_IN_SEC, delta_secs)
# return the xfer rate in Mbits/secs having bytes/microsec
return size_Mbit / delta_secs
def install(self, tag='autotest', prefix = '/'):
"""make install in the kernel tree"""
# Record that we have installed the kernel, and
# the tag under which we installed it.
self.installed_as = tag
os.chdir(self.build_dir)
if not os.path.isdir(prefix):
os.mkdir(prefix)
self.boot_dir = os.path.join(prefix, 'boot')
if not os.path.isdir(self.boot_dir):
os.mkdir(self.boot_dir)
if not self.build_image:
images = glob.glob('arch/*/boot/' + self.build_target)
if len(images):
self.build_image = images[0]
else:
self.build_image = self.build_target
# remember installed files
self.vmlinux = self.boot_dir + '/vmlinux-' + tag
if (self.build_image != 'vmlinux'):
self.image = self.boot_dir + '/vmlinuz-' + tag
else:
self.image = self.vmlinux
self.system_map = self.boot_dir + '/System.map-' + tag
self.config_file = self.boot_dir + '/config-' + tag
self.initrd = ''
# copy to boot dir
utils.force_copy('vmlinux', self.vmlinux)
if (self.build_image != 'vmlinux'):
utils.force_copy(self.build_image, self.image)
utils.force_copy('System.map', self.system_map)
utils.force_copy('.config', self.config_file)
if not kernel_config.modules_needed('.config'):
return
utils.system('make modules_install INSTALL_MOD_PATH=%s' % prefix)
if prefix == '/':
self.initrd = self.boot_dir + '/initrd-' + tag
self.mkinitrd(self.get_kernel_build_ver(), self.image,
self.system_map, self.initrd)
def apply_patches(self, local_patches):
"""apply the list of patches, in order"""
builddir = self.build_dir
os.chdir(builddir)
if not local_patches:
return None
for (spec, local, md5sum) in local_patches:
if local.endswith('.bz2') or local.endswith('.gz'):
ref = spec
else:
ref = utils.force_copy(local, self.results_dir)
ref = self.job.relative_path(ref)
patch_id = "%s %s %s" % (spec, ref, md5sum)
log = "PATCH: " + patch_id + "\n"
print log
utils.cat_file_to_cmd(local, 'patch -p1 > /dev/null')
self.logfile.write(log)
self.applied_patches.append(patch_id)
f.read()
except Exception, e:
msg = ('fatal error occurred during read(): '
'basic file operation failed: %s' % e)
raise error.TestFail(msg)
try:
f.close()
except Exception, e:
msg = ('fatal error occurred during close(): '
'basic file operation failed: %s' % e)
raise error.TestFail(msg)
# Step 3: check if file copy works
try:
utils.force_copy(self._src.name, self._dst.name)
except Exception, e:
msg = ('fatal error occurred during a file copy: '
'basic file operation failed: %s' % e)
raise error.TestFail(msg)
if src_md5 != storage_mod.checksum_file(self._dst.name):
msg = ('fatal error occurred during a file copy, '
'md5 from origin and from destination are different: '
'basic file operation failed')
raise error.TestFail(msg)
# Step 4: check if file removal works
try:
os.remove(self._src.name)
except OSError, e:
