| # Copyright (c) 2012 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 re |
| from autotest_lib.client.bin import utils |
| |
| def get_x86_cpu_arch(): |
| """Identify CPU architectural type. |
| |
| Intel's processor naming conventions is a mine field of inconsistencies. |
| Armed with that, this method simply tries to identify the architecture of |
| systems we care about. |
| |
| TODO(tbroch) grow method to cover processors numbers outlined in: |
| http://www.intel.com/content/www/us/en/processors/processor-numbers.html |
| perhaps returning more information ( brand, generation, features ) |
| |
| Returns: |
| String, explicitly (Atom, Core, Celeron) or None |
| """ |
| cpuinfo = utils.read_file('/proc/cpuinfo') |
| |
| if re.search(r'Intel.*Atom.*[NZ][2-6]', cpuinfo): |
| return 'Atom' |
| if re.search(r'Intel.*Celeron.*8[1456][07]', cpuinfo): |
| return 'Celeron' |
| if re.search(r'Intel.*Core.*i[357]-[23][0-9][0-9][0-9]', cpuinfo): |
| return 'Core' |
| |
| logging.info(cpuinfo) |
| return None |
| |
| |
| def has_rapl_support(): |
| """Identify if platform supports Intels RAPL subsytem. |
| |
| Returns: |
| Boolean, True if RAPL supported, False otherwise. |
| """ |
| cpu_arch = get_x86_cpu_arch() |
| if cpu_arch and ((cpu_arch is 'Celeron') or (cpu_arch is 'Core')): |
| return True |
| return False |
