#!/usr/bin/python
#
# Tool for analyzing boot timing
# Copyright (c) 2013, Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# Authors:
# Todd Brandt <todd.e.brandt@linux.intel.com>
#
# Description:
# This tool is designed to assist kernel and OS developers in optimizing
# their linux stack's boot time. It creates an html representation of
# the kernel boot timeline up to the start of the init process.
#
# ----------------- LIBRARIES --------------------
import sys
import time
import os
import string
import re
import platform
import shutil
from datetime import datetime, timedelta
from subprocess import call, Popen, PIPE
import sleepgraph as aslib
# ----------------- CLASSES --------------------
# Class: SystemValues
# Description:
# A global, single-instance container used to
# store system values and test parameters
class SystemValues(aslib.SystemValues):
title = 'BootGraph'
version = '2.2'
hostname = 'localhost'
testtime = ''
kernel = ''
dmesgfile = ''
ftracefile = ''
htmlfile = 'bootgraph.html'
testdir = ''
kparams = ''
result = ''
useftrace = False
usecallgraph = False
suspendmode = 'boot'
max_graph_depth = 2
graph_filter = 'do_one_initcall'
reboot = False
manual = False
iscronjob = False
timeformat = '%.6f'
bootloader = 'grub'
blexec = []
def __init__(self):
self.hostname = platform.node()
self.testtime = datetime.now().strftime('%Y-%m-%d_%H:%M:%S')
if os.path.exists('/proc/version'):
fp = open('/proc/version', 'r')
val = fp.read().strip()
fp.close()
self.kernel = self.kernelVersion(val)
else:
self.kernel = 'unknown'
self.testdir = datetime.now().strftime('boot-%y%m%d-%H%M%S')
def kernelVersion(self, msg):
return msg.split()[2]
def checkFtraceKernelVersion(self):
val = tuple(map(int, self.kernel.split('-')[0].split('.')))
if val >= (4, 10, 0):
return True
return False
def kernelParams(self):
cmdline = 'initcall_debug log_buf_len=32M'
if self.useftrace:
if self.cpucount > 0:
bs = min(self.memtotal / 2, 2*1024*1024) / self.cpucount
else:
bs = 131072
cmdline += ' trace_buf_size=%dK trace_clock=global '\
'trace_options=nooverwrite,funcgraph-abstime,funcgraph-cpu,'\
'funcgraph-duration,funcgraph-proc,funcgraph-tail,'\
'nofuncgraph-overhead,context-info,graph-time '\
'ftrace=function_graph '\
'ftrace_graph_max_depth=%d '\
'ftrace_graph_filter=%s' % \
(bs, self.max_graph_depth, self.graph_filter)
return cmdline
def setGraphFilter(self, val):
master = self.getBootFtraceFilterFunctions()
fs = ''
for i in val.split(','):
func = i.strip()
if func == '':
doError('badly formatted filter function string')
if '[' in func or ']' in func:
doError('loadable module functions not allowed - "%s"' % func)
if ' ' in func:
doError('spaces found in filter functions - "%s"' % func)
if func not in master:
doError('function "%s" not available for ftrace' % func)
if not fs:
fs = func
else:
fs += ','+func
if not fs:
doError('badly formatted filter function string')
self.graph_filter = fs
def getBootFtraceFilterFunctions(self):
self.rootCheck(True)
fp = open(self.tpath+'available_filter_functions')
fulllist = fp.read().split('\n')
fp.close()
list = []
for i in fulllist:
if not i or ' ' in i or '[' in i or ']' in i:
continue
list.append(i)
return list
def myCronJob(self, line):
if '@reboot' not in line:
return False
if 'bootgraph' in line or 'analyze_boot.py' in line or '-cronjob' in line:
return True
return False
def cronjobCmdString(self):
cmdline = '%s -cronjob' % os.path.abspath(sys.argv[0])
args = iter(sys.argv[1:])
for arg in args:
if arg in ['-h', '-v', '-cronjob', '-reboot', '-verbose']:
continue
elif arg in ['-o', '-dmesg', '-ftrace', '-func']:
args.next()