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538 lines
20 KiB
538 lines
20 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright 2019 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Utils for setting devices
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This script provides utils to set device specs.
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"""
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from __future__ import division
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from __future__ import print_function
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__author__ = 'zhizhouy@google.com (Zhizhou Yang)'
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import re
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import time
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from contextlib import contextmanager
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from cros_utils import command_executer
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class DutWrapper(object):
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"""Wrap DUT parameters inside."""
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def __init__(self,
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chromeos_root,
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remote,
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log_level='verbose',
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logger=None,
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ce=None,
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dut_config=None):
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self.chromeos_root = chromeos_root
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self.remote = remote
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self.log_level = log_level
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self.logger = logger
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self.ce = ce or command_executer.GetCommandExecuter(log_level=log_level)
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self.dut_config = dut_config
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def RunCommandOnDut(self, command, ignore_status=False):
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"""Helper function to run command on DUT."""
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ret, msg, err_msg = self.ce.CrosRunCommandWOutput(
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command, machine=self.remote, chromeos_root=self.chromeos_root)
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if ret:
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err_msg = ('Command execution on DUT %s failed.\n'
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'Failing command: %s\n'
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'returned %d\n'
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'Error message: %s' % (self.remote, command, ret, err_msg))
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if ignore_status:
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self.logger.LogError(err_msg +
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'\n(Failure is considered non-fatal. Continue.)')
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else:
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self.logger.LogFatal(err_msg)
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return ret, msg, err_msg
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def DisableASLR(self):
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"""Disable ASLR on DUT."""
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disable_aslr = ('set -e; '
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'if [[ -e /proc/sys/kernel/randomize_va_space ]]; then '
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' echo 0 > /proc/sys/kernel/randomize_va_space; '
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'fi')
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if self.log_level == 'average':
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self.logger.LogOutput('Disable ASLR.')
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self.RunCommandOnDut(disable_aslr)
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def SetCpuGovernor(self, governor, ignore_status=False):
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"""Setup CPU Governor on DUT."""
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set_gov_cmd = (
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'for f in `ls -d /sys/devices/system/cpu/cpu*/cpufreq 2>/dev/null`; do '
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# Skip writing scaling_governor if cpu is offline.
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' [[ -e ${f/cpufreq/online} ]] && grep -q 0 ${f/cpufreq/online} '
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' && continue; '
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' cd $f; '
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' if [[ -e scaling_governor ]]; then '
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' echo %s > scaling_governor; fi; '
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'done; ')
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if self.log_level == 'average':
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self.logger.LogOutput('Setup CPU Governor: %s.' % governor)
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ret, _, _ = self.RunCommandOnDut(
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set_gov_cmd % governor, ignore_status=ignore_status)
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return ret
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def DisableTurbo(self):
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"""Disable Turbo on DUT."""
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dis_turbo_cmd = (
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'if [[ -e /sys/devices/system/cpu/intel_pstate/no_turbo ]]; then '
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' if grep -q 0 /sys/devices/system/cpu/intel_pstate/no_turbo; then '
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' echo -n 1 > /sys/devices/system/cpu/intel_pstate/no_turbo; '
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' fi; '
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'fi; ')
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if self.log_level == 'average':
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self.logger.LogOutput('Disable Turbo.')
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self.RunCommandOnDut(dis_turbo_cmd)
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def SetupCpuUsage(self):
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"""Setup CPU usage.
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Based on self.dut_config['cpu_usage'] configure CPU cores
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utilization.
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"""
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if (self.dut_config['cpu_usage'] == 'big_only' or
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self.dut_config['cpu_usage'] == 'little_only'):
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_, arch, _ = self.RunCommandOnDut('uname -m')
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if arch.lower().startswith('arm') or arch.lower().startswith('aarch64'):
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self.SetupArmCores()
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def SetupArmCores(self):
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"""Setup ARM big/little cores."""
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# CPU implemeters/part numbers of big/LITTLE CPU.
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# Format: dict(CPU implementer: set(CPU part numbers))
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LITTLE_CORES = {
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'0x41': {
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'0xd01', # Cortex A32
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'0xd03', # Cortex A53
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'0xd04', # Cortex A35
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'0xd05', # Cortex A55
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},
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}
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BIG_CORES = {
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'0x41': {
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'0xd07', # Cortex A57
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'0xd08', # Cortex A72
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'0xd09', # Cortex A73
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'0xd0a', # Cortex A75
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'0xd0b', # Cortex A76
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},
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}
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# Values of CPU Implementer and CPU part number are exposed by cpuinfo.
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# Format:
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# =================
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# processor : 0
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# model name : ARMv8 Processor rev 4 (v8l)
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# BogoMIPS : 48.00
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# Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
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# CPU implementer : 0x41
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# CPU architecture: 8
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# CPU variant : 0x0
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# CPU part : 0xd03
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# CPU revision : 4
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_, cpuinfo, _ = self.RunCommandOnDut('cat /proc/cpuinfo')
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# List of all CPU cores: 0, 1, ..
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proc_matches = re.findall(r'^processor\s*: (\d+)$', cpuinfo, re.MULTILINE)
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# List of all corresponding CPU implementers
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impl_matches = re.findall(r'^CPU implementer\s*: (0x[\da-f]+)$', cpuinfo,
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re.MULTILINE)
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# List of all corresponding CPU part numbers
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part_matches = re.findall(r'^CPU part\s*: (0x[\da-f]+)$', cpuinfo,
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re.MULTILINE)
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assert len(proc_matches) == len(impl_matches)
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assert len(part_matches) == len(impl_matches)
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all_cores = set(proc_matches)
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dut_big_cores = {
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core
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for core, impl, part in zip(proc_matches, impl_matches, part_matches)
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if impl in BIG_CORES and part in BIG_CORES[impl]
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}
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dut_lit_cores = {
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core
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for core, impl, part in zip(proc_matches, impl_matches, part_matches)
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if impl in LITTLE_CORES and part in LITTLE_CORES[impl]
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}
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if self.dut_config['cpu_usage'] == 'big_only':
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cores_to_enable = dut_big_cores
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cores_to_disable = all_cores - dut_big_cores
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elif self.dut_config['cpu_usage'] == 'little_only':
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cores_to_enable = dut_lit_cores
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cores_to_disable = all_cores - dut_lit_cores
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else:
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self.logger.LogError(
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'cpu_usage=%s is not supported on ARM.\n'
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'Ignore ARM CPU setup and continue.' % self.dut_config['cpu_usage'])
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return
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if cores_to_enable:
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cmd_enable_cores = ('echo 1 | tee /sys/devices/system/cpu/cpu{%s}/online'
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% ','.join(sorted(cores_to_enable)))
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cmd_disable_cores = ''
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if cores_to_disable:
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cmd_disable_cores = (
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'echo 0 | tee /sys/devices/system/cpu/cpu{%s}/online' % ','.join(
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sorted(cores_to_disable)))
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self.RunCommandOnDut('; '.join([cmd_enable_cores, cmd_disable_cores]))
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else:
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# If there are no cores enabled by dut_config then configuration
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# is invalid for current platform and should be ignored.
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self.logger.LogError(
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'"cpu_usage" is invalid for targeted platform.\n'
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'dut_config[cpu_usage]=%s\n'
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'dut big cores: %s\n'
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'dut little cores: %s\n'
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'Ignore ARM CPU setup and continue.' % (self.dut_config['cpu_usage'],
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dut_big_cores, dut_lit_cores))
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def GetCpuOnline(self):
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"""Get online status of CPU cores.
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Return dict of {int(cpu_num): <0|1>}.
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"""
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get_cpu_online_cmd = ('paste -d" "'
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' <(ls /sys/devices/system/cpu/cpu*/online)'
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' <(cat /sys/devices/system/cpu/cpu*/online)')
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_, online_output_str, _ = self.RunCommandOnDut(get_cpu_online_cmd)
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# Here is the output we expect to see:
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# -----------------
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# /sys/devices/system/cpu/cpu0/online 0
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# /sys/devices/system/cpu/cpu1/online 1
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cpu_online = {}
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cpu_online_match = re.compile(r'^[/\S]+/cpu(\d+)/[/\S]+\s+(\d+)$')
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for line in online_output_str.splitlines():
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match = cpu_online_match.match(line)
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if match:
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cpu = int(match.group(1))
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status = int(match.group(2))
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cpu_online[cpu] = status
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# At least one CPU has to be online.
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assert cpu_online
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return cpu_online
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def SetupCpuFreq(self, online_cores):
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"""Setup CPU frequency.
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Based on self.dut_config['cpu_freq_pct'] setup frequency of online CPU cores
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to a supported value which is less or equal to (freq_pct * max_freq / 100)
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limited by min_freq.
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NOTE: scaling_available_frequencies support is required.
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Otherwise the function has no effect.
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"""
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freq_percent = self.dut_config['cpu_freq_pct']
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list_all_avail_freq_cmd = ('ls /sys/devices/system/cpu/cpu{%s}/cpufreq/'
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'scaling_available_frequencies')
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# Ignore error to support general usage of frequency setup.
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# Not all platforms support scaling_available_frequencies.
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ret, all_avail_freq_str, _ = self.RunCommandOnDut(
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list_all_avail_freq_cmd % ','.join(str(core) for core in online_cores),
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ignore_status=True)
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if ret or not all_avail_freq_str:
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# No scalable frequencies available for the core.
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return ret
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for avail_freq_path in all_avail_freq_str.split():
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# Get available freq from every scaling_available_frequency path.
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# Error is considered fatal in self.RunCommandOnDut().
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_, avail_freq_str, _ = self.RunCommandOnDut('cat ' + avail_freq_path)
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assert avail_freq_str
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all_avail_freq = sorted(
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int(freq_str) for freq_str in avail_freq_str.split())
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min_freq = all_avail_freq[0]
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max_freq = all_avail_freq[-1]
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# Calculate the frequency we are targeting.
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target_freq = round(max_freq * freq_percent / 100)
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# More likely it's not in the list of supported frequencies
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# and our goal is to find the one which is less or equal.
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# Default is min and we will try to maximize it.
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avail_ngt_target = min_freq
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# Find the largest not greater than the target.
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for next_largest in reversed(all_avail_freq):
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if next_largest <= target_freq:
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avail_ngt_target = next_largest
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break
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max_freq_path = avail_freq_path.replace('scaling_available_frequencies',
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'scaling_max_freq')
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min_freq_path = avail_freq_path.replace('scaling_available_frequencies',
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'scaling_min_freq')
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# With default ignore_status=False we expect 0 status or Fatal error.
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self.RunCommandOnDut('echo %s | tee %s %s' %
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(avail_ngt_target, max_freq_path, min_freq_path))
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def WaitCooldown(self):
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"""Wait for DUT to cool down to certain temperature."""
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waittime = 0
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timeout_in_sec = int(self.dut_config['cooldown_time']) * 60
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# Temperature from sensors come in uCelsius units.
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temp_in_ucels = int(self.dut_config['cooldown_temp']) * 1000
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sleep_interval = 30
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# Wait until any of two events occurs:
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# 1. CPU cools down to a specified temperature.
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# 2. Timeout cooldown_time expires.
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# For the case when targeted temperature is not reached within specified
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# timeout the benchmark is going to start with higher initial CPU temp.
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# In the worst case it may affect test results but at the same time we
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# guarantee the upper bound of waiting time.
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# TODO(denik): Report (or highlight) "high" CPU temperature in test results.
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# "high" should be calculated based on empirical data per platform.
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# Based on such reports we can adjust CPU configuration or
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# cooldown limits accordingly.
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while waittime < timeout_in_sec:
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_, temp_output, _ = self.RunCommandOnDut(
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'cat /sys/class/thermal/thermal_zone*/temp', ignore_status=True)
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if any(int(temp) > temp_in_ucels for temp in temp_output.split()):
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time.sleep(sleep_interval)
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waittime += sleep_interval
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else:
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# Exit the loop when:
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# 1. Reported temp numbers from all thermal sensors do not exceed
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# 'cooldown_temp' or
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# 2. No data from the sensors.
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break
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self.logger.LogOutput('Cooldown wait time: %.1f min' % (waittime / 60))
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return waittime
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def DecreaseWaitTime(self):
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"""Change the ten seconds wait time for pagecycler to two seconds."""
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FILE = '/usr/local/telemetry/src/tools/perf/page_sets/page_cycler_story.py'
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ret = self.RunCommandOnDut('ls ' + FILE)
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if not ret:
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sed_command = 'sed -i "s/_TTI_WAIT_TIME = 10/_TTI_WAIT_TIME = 2/g" '
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self.RunCommandOnDut(sed_command + FILE)
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def StopUI(self):
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"""Stop UI on DUT."""
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# Added "ignore_status" for the case when crosperf stops ui service which
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# was already stopped. Command is going to fail with 1.
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self.RunCommandOnDut('stop ui', ignore_status=True)
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def StartUI(self):
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"""Start UI on DUT."""
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# Similar to StopUI, `start ui` fails if the service is already started.
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self.RunCommandOnDut('start ui', ignore_status=True)
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def KerncmdUpdateNeeded(self, intel_pstate):
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"""Check whether kernel cmdline update is needed.
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Args:
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intel_pstate: kernel command line argument (active, passive, no_hwp)
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Returns:
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True if update is needed.
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"""
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good = 0
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# Check that dut platform supports hwp
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cmd = "grep -q '^flags.*hwp' /proc/cpuinfo"
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ret_code, _, _ = self.RunCommandOnDut(cmd, ignore_status=True)
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if ret_code != good:
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# Intel hwp is not supported, update is not needed.
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return False
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kern_cmdline_cmd = 'grep -q "intel_pstate=%s" /proc/cmdline' % intel_pstate
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ret_code, _, _ = self.RunCommandOnDut(kern_cmdline_cmd, ignore_status=True)
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self.logger.LogOutput('grep /proc/cmdline returned %d' % ret_code)
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if (intel_pstate and ret_code == good or
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not intel_pstate and ret_code != good):
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# No need to updated cmdline if:
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# 1. We are setting intel_pstate and we found it is already set.
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# 2. Not using intel_pstate and it is not in cmdline.
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return False
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# Otherwise we need to update intel_pstate.
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return True
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def UpdateKerncmdIntelPstate(self, intel_pstate):
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"""Update kernel command line.
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Args:
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intel_pstate: kernel command line argument (active, passive, no_hwp)
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"""
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good = 0
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# First phase is to remove rootfs verification to allow cmdline change.
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remove_verif_cmd = ' '.join([
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'/usr/share/vboot/bin/make_dev_ssd.sh',
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'--remove_rootfs_verification',
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'--partition %d',
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])
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# Command for partition 2.
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verif_part2_failed, _, _ = self.RunCommandOnDut(
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remove_verif_cmd % 2, ignore_status=True)
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# Command for partition 4
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# Some machines in the lab use partition 4 to boot from,
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# so cmdline should be update for both partitions.
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verif_part4_failed, _, _ = self.RunCommandOnDut(
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remove_verif_cmd % 4, ignore_status=True)
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if verif_part2_failed or verif_part4_failed:
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self.logger.LogFatal(
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'ERROR. Failed to update kernel cmdline on partition %d.\n'
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'Remove verification failed with status %d' %
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(2 if verif_part2_failed else 4, verif_part2_failed or
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verif_part4_failed))
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self.RunCommandOnDut('reboot && exit')
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# Give enough time for dut to complete reboot
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# TODO(denik): Replace with the function checking machine availability.
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time.sleep(30)
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# Second phase to update intel_pstate in kernel cmdline.
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kern_cmdline = '\n'.join([
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'tmpfile=$(mktemp)',
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'partnumb=%d',
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'pstate=%s',
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# Store kernel cmdline in a temp file.
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'/usr/share/vboot/bin/make_dev_ssd.sh --partition ${partnumb}'
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' --save_config ${tmpfile}',
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# Remove intel_pstate argument if present.
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"sed -i -r 's/ intel_pstate=[A-Za-z_]+//g' ${tmpfile}.${partnumb}",
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# Insert intel_pstate with a new value if it is set.
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'[[ -n ${pstate} ]] &&'
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' sed -i -e \"s/ *$/ intel_pstate=${pstate}/\" ${tmpfile}.${partnumb}',
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# Save the change in kernel cmdline.
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# After completion we have to reboot.
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'/usr/share/vboot/bin/make_dev_ssd.sh --partition ${partnumb}'
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' --set_config ${tmpfile}'
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])
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kern_part2_cmdline_cmd = kern_cmdline % (2, intel_pstate)
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self.logger.LogOutput(
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'Command to change kernel command line: %s' % kern_part2_cmdline_cmd)
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upd_part2_failed, _, _ = self.RunCommandOnDut(
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kern_part2_cmdline_cmd, ignore_status=True)
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# Again here we are updating cmdline for partition 4
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# in addition to partition 2. Without this some machines
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# in the lab might fail.
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kern_part4_cmdline_cmd = kern_cmdline % (4, intel_pstate)
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self.logger.LogOutput(
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'Command to change kernel command line: %s' % kern_part4_cmdline_cmd)
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upd_part4_failed, _, _ = self.RunCommandOnDut(
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kern_part4_cmdline_cmd, ignore_status=True)
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if upd_part2_failed or upd_part4_failed:
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self.logger.LogFatal(
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'ERROR. Failed to update kernel cmdline on partition %d.\n'
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'intel_pstate update failed with status %d' %
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(2 if upd_part2_failed else 4, upd_part2_failed or upd_part4_failed))
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self.RunCommandOnDut('reboot && exit')
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# Wait 30s after reboot.
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time.sleep(30)
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# Verification phase.
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# Check that cmdline was updated.
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# Throw an exception if not.
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kern_cmdline_cmd = 'grep -q "intel_pstate=%s" /proc/cmdline' % intel_pstate
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|
ret_code, _, _ = self.RunCommandOnDut(kern_cmdline_cmd, ignore_status=True)
|
|
if (intel_pstate and ret_code != good or
|
|
not intel_pstate and ret_code == good):
|
|
# Kernel cmdline doesn't match input intel_pstate.
|
|
self.logger.LogFatal(
|
|
'ERROR. Failed to update kernel cmdline. '
|
|
'Final verification failed with status %d' % ret_code)
|
|
|
|
self.logger.LogOutput('Kernel cmdline updated successfully.')
|
|
|
|
@contextmanager
|
|
def PauseUI(self):
|
|
"""Stop UI before and Start UI after the context block.
|
|
|
|
Context manager will make sure UI is always resumed at the end.
|
|
"""
|
|
self.StopUI()
|
|
try:
|
|
yield
|
|
|
|
finally:
|
|
self.StartUI()
|
|
|
|
def SetupDevice(self):
|
|
"""Setup device to get it ready for testing.
|
|
|
|
@Returns Wait time of cool down for this benchmark run.
|
|
"""
|
|
self.logger.LogOutput('Update kernel cmdline if necessary and reboot')
|
|
intel_pstate = self.dut_config['intel_pstate']
|
|
if intel_pstate and self.KerncmdUpdateNeeded(intel_pstate):
|
|
self.UpdateKerncmdIntelPstate(intel_pstate)
|
|
|
|
wait_time = 0
|
|
# Pause UI while configuring the DUT.
|
|
# This will accelerate setup (waiting for cooldown has x10 drop)
|
|
# and help to reset a Chrome state left after the previous test.
|
|
with self.PauseUI():
|
|
# Unless the user turns on ASLR in the flag, we first disable ASLR
|
|
# before running the benchmarks
|
|
if not self.dut_config['enable_aslr']:
|
|
self.DisableASLR()
|
|
|
|
# CPU usage setup comes first where we enable/disable cores.
|
|
self.SetupCpuUsage()
|
|
cpu_online_status = self.GetCpuOnline()
|
|
# List of online cores of type int (core number).
|
|
online_cores = [
|
|
core for core, status in cpu_online_status.items() if status
|
|
]
|
|
if self.dut_config['cooldown_time']:
|
|
# Setup power conservative mode for effective cool down.
|
|
# Set ignore status since powersave may no be available
|
|
# on all platforms and we are going to handle it.
|
|
ret = self.SetCpuGovernor('powersave', ignore_status=True)
|
|
if ret:
|
|
# "powersave" is not available, use "ondemand".
|
|
# Still not a fatal error if it fails.
|
|
ret = self.SetCpuGovernor('ondemand', ignore_status=True)
|
|
# TODO(denik): Run comparison test for 'powersave' and 'ondemand'
|
|
# on scarlet and kevin64.
|
|
# We might have to consider reducing freq manually to the min
|
|
# if it helps to reduce waiting time.
|
|
wait_time = self.WaitCooldown()
|
|
|
|
# Setup CPU governor for the benchmark run.
|
|
# It overwrites the previous governor settings.
|
|
governor = self.dut_config['governor']
|
|
# FIXME(denik): Pass online cores to governor setup.
|
|
self.SetCpuGovernor(governor)
|
|
|
|
# Disable Turbo and Setup CPU freq should ALWAYS proceed governor setup
|
|
# since governor may change:
|
|
# - frequency;
|
|
# - turbo/boost.
|
|
self.DisableTurbo()
|
|
self.SetupCpuFreq(online_cores)
|
|
|
|
self.DecreaseWaitTime()
|
|
# FIXME(denik): Currently we are not recovering the previous cpufreq
|
|
# settings since we do reboot/setup every time anyway.
|
|
# But it may change in the future and then we have to recover the
|
|
# settings.
|
|
return wait_time
|