Update autotest tests to use make -j where possible.

client/site_tests/hardware_StorageFio/hardware_StorageFio.py

 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging, os, re
 
 from autotest_lib.client.bin import test, utils
 from autotest_lib.client.common_lib import error
 
 class hardware_StorageFio(test.test):
@@ skipping 10 matching lines @@
 
         self.job.setup_dep(['libaio'])
         ldflags = '-L' + self.autodir + '/deps/libaio/lib'
         cflags = '-I' + self.autodir + '/deps/libaio/include'
         var_ldflags = 'LDFLAGS="' + ldflags + '"'
         var_cflags  = 'CFLAGS="' + cflags + '"'
 
         os.chdir(self.srcdir)
         utils.system('patch -p1 < ../Makefile.patch')
         utils.system('patch -p1 < ../arm.patch')
-        utils.system('%s %s make' % (var_ldflags, var_cflags))
+        utils.make(make='%s %s make' % (var_ldflags, var_cflags))
 
 
     def __find_free_root_partition(self):
         """Locate the spare root partition that we didn't boot off"""
 
         spare_root_map = {
             '3': '5',
             '5': '3',
         }
         rootdev = utils.system_output('rootdev')
@@ skipping 158 matching lines @@
             results[units + '_' + test] = result[metric]
 
         # Output keys relevent to the performance, larger filesize will run
         # slower, and sda5 should be slightly slower than sda3 on a rotational
         # disk
         self.write_test_keyval({'filesize': self.__filesize,
                                 'filename': self.__filename,
                                 'device': self.__description})
         logging.info('Device Description: %s' % self.__description)
         self.write_perf_keyval(results)