analyze_suspend.py 157 KB
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#!/usr/bin/python
#
# Tool for analyzing suspend/resume 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.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
#
# Authors:
#	 Todd Brandt <todd.e.brandt@linux.intel.com>
#
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# Links:
#	 Home Page
#	   https://01.org/suspendresume
#	 Source repo
#	   https://github.com/01org/suspendresume
#	 Documentation
#	   Getting Started
#	     https://01.org/suspendresume/documentation/getting-started
#	   Command List:
#	     https://01.org/suspendresume/documentation/command-list
#
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# Description:
#	 This tool is designed to assist kernel and OS developers in optimizing
#	 their linux stack's suspend/resume time. Using a kernel image built
#	 with a few extra options enabled, the tool will execute a suspend and
#	 will capture dmesg and ftrace data until resume is complete. This data
#	 is transformed into a device timeline and a callgraph to give a quick
#	 and detailed view of which devices and callbacks are taking the most
#	 time in suspend/resume. The output is a single html file which can be
#	 viewed in firefox or chrome.
#
#	 The following kernel build options are required:
#		 CONFIG_PM_DEBUG=y
#		 CONFIG_PM_SLEEP_DEBUG=y
#		 CONFIG_FTRACE=y
#		 CONFIG_FUNCTION_TRACER=y
#		 CONFIG_FUNCTION_GRAPH_TRACER=y
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#		 CONFIG_KPROBES=y
#		 CONFIG_KPROBES_ON_FTRACE=y
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#
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#	 For kernel versions older than 3.15:
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#	 The following additional kernel parameters are required:
#		 (e.g. in file /etc/default/grub)
#		 GRUB_CMDLINE_LINUX_DEFAULT="... initcall_debug log_buf_len=16M ..."
#

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# ----------------- LIBRARIES --------------------

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import sys
import time
import os
import string
import re
import platform
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from datetime import datetime
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import struct
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import ConfigParser
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# ----------------- CLASSES --------------------
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# Class: SystemValues
# Description:
#	 A global, single-instance container used to
#	 store system values and test parameters
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class SystemValues:
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	ansi = False
	version = '4.2'
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	verbose = False
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	addlogs = False
	mindevlen = 0.001
	mincglen = 1.0
	srgap = 0
	cgexp = False
	outdir = ''
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	testdir = '.'
	tpath = '/sys/kernel/debug/tracing/'
	fpdtpath = '/sys/firmware/acpi/tables/FPDT'
	epath = '/sys/kernel/debug/tracing/events/power/'
	traceevents = [
		'suspend_resume',
		'device_pm_callback_end',
		'device_pm_callback_start'
	]
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	testcommand = ''
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	mempath = '/dev/mem'
	powerfile = '/sys/power/state'
	suspendmode = 'mem'
	hostname = 'localhost'
	prefix = 'test'
	teststamp = ''
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	dmesgstart = 0.0
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	dmesgfile = ''
	ftracefile = ''
	htmlfile = ''
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	embedded = False
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	rtcwake = False
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	rtcwaketime = 10
	rtcpath = ''
	devicefilter = []
	stamp = 0
	execcount = 1
	x2delay = 0
	usecallgraph = False
	usetraceevents = False
	usetraceeventsonly = False
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	usetracemarkers = True
	usekprobes = True
	usedevsrc = False
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	notestrun = False
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	devprops = dict()
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	postresumetime = 0
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	devpropfmt = '# Device Properties: .*'
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	tracertypefmt = '# tracer: (?P<t>.*)'
	firmwarefmt = '# fwsuspend (?P<s>[0-9]*) fwresume (?P<r>[0-9]*)$'
	postresumefmt = '# post resume time (?P<t>[0-9]*)$'
	stampfmt = '# suspend-(?P<m>[0-9]{2})(?P<d>[0-9]{2})(?P<y>[0-9]{2})-'+\
				'(?P<H>[0-9]{2})(?P<M>[0-9]{2})(?P<S>[0-9]{2})'+\
				' (?P<host>.*) (?P<mode>.*) (?P<kernel>.*)$'
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	kprobecolor = 'rgba(204,204,204,0.5)'
	synccolor = 'rgba(204,204,204,0.5)'
	debugfuncs = []
	tracefuncs = {
		'sys_sync': dict(),
		'pm_prepare_console': dict(),
		'pm_notifier_call_chain': dict(),
		'freeze_processes': dict(),
		'freeze_kernel_threads': dict(),
		'pm_restrict_gfp_mask': dict(),
		'acpi_suspend_begin': dict(),
		'suspend_console': dict(),
		'acpi_pm_prepare': dict(),
		'syscore_suspend': dict(),
		'arch_enable_nonboot_cpus_end': dict(),
		'syscore_resume': dict(),
		'acpi_pm_finish': dict(),
		'resume_console': dict(),
		'acpi_pm_end': dict(),
		'pm_restore_gfp_mask': dict(),
		'thaw_processes': dict(),
		'pm_restore_console': dict(),
		'CPU_OFF': {
			'func':'_cpu_down',
			'args_x86_64': {'cpu':'%di:s32'},
			'format': 'CPU_OFF[{cpu}]',
			'mask': 'CPU_.*_DOWN'
		},
		'CPU_ON': {
			'func':'_cpu_up',
			'args_x86_64': {'cpu':'%di:s32'},
			'format': 'CPU_ON[{cpu}]',
			'mask': 'CPU_.*_UP'
		},
	}
	dev_tracefuncs = {
		# general wait/delay/sleep
		'msleep': { 'args_x86_64': {'time':'%di:s32'} },
		'udelay': { 'func':'__const_udelay', 'args_x86_64': {'loops':'%di:s32'} },
		'acpi_os_stall': dict(),
		# ACPI
		'acpi_resume_power_resources': dict(),
		'acpi_ps_parse_aml': dict(),
		# filesystem
		'ext4_sync_fs': dict(),
		# ATA
		'ata_eh_recover': { 'args_x86_64': {'port':'+36(%di):s32'} },
		# i915
		'i915_gem_restore_gtt_mappings': dict(),
		'intel_opregion_setup': dict(),
		'intel_dp_detect': dict(),
		'intel_hdmi_detect': dict(),
		'intel_opregion_init': dict(),
	}
	kprobes_postresume = [
		{
			'name': 'ataportrst',
			'func': 'ata_eh_recover',
			'args': {'port':'+36(%di):s32'},
			'format': 'ata{port}_port_reset',
			'mask': 'ata.*_port_reset'
		}
	]
	kprobes = dict()
	timeformat = '%.3f'
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	def __init__(self):
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		# if this is a phoronix test run, set some default options
		if('LOG_FILE' in os.environ and 'TEST_RESULTS_IDENTIFIER' in os.environ):
			self.embedded = True
			self.addlogs = True
			self.htmlfile = os.environ['LOG_FILE']
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		self.hostname = platform.node()
		if(self.hostname == ''):
			self.hostname = 'localhost'
		rtc = "rtc0"
		if os.path.exists('/dev/rtc'):
			rtc = os.readlink('/dev/rtc')
		rtc = '/sys/class/rtc/'+rtc
		if os.path.exists(rtc) and os.path.exists(rtc+'/date') and \
			os.path.exists(rtc+'/time') and os.path.exists(rtc+'/wakealarm'):
			self.rtcpath = rtc
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		if (hasattr(sys.stdout, 'isatty') and sys.stdout.isatty()):
			self.ansi = True
	def setPrecision(self, num):
		if num < 0 or num > 6:
			return
		self.timeformat = '%.{0}f'.format(num)
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	def setOutputFile(self):
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		if((self.htmlfile == '') and (self.dmesgfile != '')):
			m = re.match('(?P<name>.*)_dmesg\.txt$', self.dmesgfile)
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			if(m):
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				self.htmlfile = m.group('name')+'.html'
		if((self.htmlfile == '') and (self.ftracefile != '')):
			m = re.match('(?P<name>.*)_ftrace\.txt$', self.ftracefile)
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			if(m):
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				self.htmlfile = m.group('name')+'.html'
		if(self.htmlfile == ''):
			self.htmlfile = 'output.html'
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	def initTestOutput(self, subdir, testpath=''):
		self.prefix = self.hostname
		v = open('/proc/version', 'r').read().strip()
		kver = string.split(v)[2]
		n = datetime.now()
		testtime = n.strftime('suspend-%m%d%y-%H%M%S')
		if not testpath:
			testpath = n.strftime('suspend-%y%m%d-%H%M%S')
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		if(subdir != "."):
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			self.testdir = subdir+"/"+testpath
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		else:
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			self.testdir = testpath
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		self.teststamp = \
			'# '+testtime+' '+self.prefix+' '+self.suspendmode+' '+kver
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		if(self.embedded):
			self.dmesgfile = \
				'/tmp/'+testtime+'_'+self.suspendmode+'_dmesg.txt'
			self.ftracefile = \
				'/tmp/'+testtime+'_'+self.suspendmode+'_ftrace.txt'
			return
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		self.dmesgfile = \
			self.testdir+'/'+self.prefix+'_'+self.suspendmode+'_dmesg.txt'
		self.ftracefile = \
			self.testdir+'/'+self.prefix+'_'+self.suspendmode+'_ftrace.txt'
		self.htmlfile = \
			self.testdir+'/'+self.prefix+'_'+self.suspendmode+'.html'
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		if not os.path.isdir(self.testdir):
			os.mkdir(self.testdir)
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	def setDeviceFilter(self, devnames):
		self.devicefilter = string.split(devnames)
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	def rtcWakeAlarmOn(self):
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		os.system('echo 0 > '+self.rtcpath+'/wakealarm')
		outD = open(self.rtcpath+'/date', 'r').read().strip()
		outT = open(self.rtcpath+'/time', 'r').read().strip()
		mD = re.match('^(?P<y>[0-9]*)-(?P<m>[0-9]*)-(?P<d>[0-9]*)', outD)
		mT = re.match('^(?P<h>[0-9]*):(?P<m>[0-9]*):(?P<s>[0-9]*)', outT)
		if(mD and mT):
			# get the current time from hardware
			utcoffset = int((datetime.now() - datetime.utcnow()).total_seconds())
			dt = datetime(\
				int(mD.group('y')), int(mD.group('m')), int(mD.group('d')),
				int(mT.group('h')), int(mT.group('m')), int(mT.group('s')))
			nowtime = int(dt.strftime('%s')) + utcoffset
		else:
			# if hardware time fails, use the software time
			nowtime = int(datetime.now().strftime('%s'))
		alarm = nowtime + self.rtcwaketime
		os.system('echo %d > %s/wakealarm' % (alarm, self.rtcpath))
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	def rtcWakeAlarmOff(self):
		os.system('echo 0 > %s/wakealarm' % self.rtcpath)
	def initdmesg(self):
		# get the latest time stamp from the dmesg log
		fp = os.popen('dmesg')
		ktime = '0'
		for line in fp:
			line = line.replace('\r\n', '')
			idx = line.find('[')
			if idx > 1:
				line = line[idx:]
			m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
			if(m):
				ktime = m.group('ktime')
		fp.close()
		self.dmesgstart = float(ktime)
	def getdmesg(self):
		# store all new dmesg lines since initdmesg was called
		fp = os.popen('dmesg')
		op = open(self.dmesgfile, 'a')
		for line in fp:
			line = line.replace('\r\n', '')
			idx = line.find('[')
			if idx > 1:
				line = line[idx:]
			m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
			if(not m):
				continue
			ktime = float(m.group('ktime'))
			if ktime > self.dmesgstart:
				op.write(line)
		fp.close()
		op.close()
	def addFtraceFilterFunctions(self, file):
		fp = open(file)
		list = fp.read().split('\n')
		fp.close()
		for i in list:
			if len(i) < 2:
				continue
			self.tracefuncs[i] = dict()
	def getFtraceFilterFunctions(self, current):
		rootCheck(True)
		if not current:
			os.system('cat '+self.tpath+'available_filter_functions')
			return
		fp = open(self.tpath+'available_filter_functions')
		master = fp.read().split('\n')
		fp.close()
		if len(self.debugfuncs) > 0:
			for i in self.debugfuncs:
				if i in master:
					print i
				else:
					print self.colorText(i)
		else:
			for i in self.tracefuncs:
				if 'func' in self.tracefuncs[i]:
					i = self.tracefuncs[i]['func']
				if i in master:
					print i
				else:
					print self.colorText(i)
	def setFtraceFilterFunctions(self, list):
		fp = open(self.tpath+'available_filter_functions')
		master = fp.read().split('\n')
		fp.close()
		flist = ''
		for i in list:
			if i not in master:
				continue
			if ' [' in i:
				flist += i.split(' ')[0]+'\n'
			else:
				flist += i+'\n'
		fp = open(self.tpath+'set_graph_function', 'w')
		fp.write(flist)
		fp.close()
	def kprobeMatch(self, name, target):
		if name not in self.kprobes:
			return False
		if re.match(self.kprobes[name]['mask'], target):
			return True
		return False
	def basicKprobe(self, name):
		self.kprobes[name] = {'name': name,'func': name,'args': dict(),'format': name,'mask': name}
	def defaultKprobe(self, name, kdata):
		k = kdata
		for field in ['name', 'format', 'mask', 'func']:
			if field not in k:
				k[field] = name
		archargs = 'args_'+platform.machine()
		if archargs in k:
			k['args'] = k[archargs]
		else:
			k['args'] = dict()
			k['format'] = name
		self.kprobes[name] = k
	def kprobeColor(self, name):
		if name not in self.kprobes or 'color' not in self.kprobes[name]:
			return ''
		return self.kprobes[name]['color']
	def kprobeDisplayName(self, name, dataraw):
		if name not in self.kprobes:
			self.basicKprobe(name)
		data = ''
		quote=0
		# first remvoe any spaces inside quotes, and the quotes
		for c in dataraw:
			if c == '"':
				quote = (quote + 1) % 2
			if quote and c == ' ':
				data += '_'
			elif c != '"':
				data += c
		fmt, args = self.kprobes[name]['format'], self.kprobes[name]['args']
		arglist = dict()
		# now process the args
		for arg in sorted(args):
			arglist[arg] = ''
			m = re.match('.* '+arg+'=(?P<arg>.*) ', data);
			if m:
				arglist[arg] = m.group('arg')
			else:
				m = re.match('.* '+arg+'=(?P<arg>.*)', data);
				if m:
					arglist[arg] = m.group('arg')
		out = fmt.format(**arglist)
		out = out.replace(' ', '_').replace('"', '')
		return out
	def kprobeText(self, kprobe):
		name, fmt, func, args = kprobe['name'], kprobe['format'], kprobe['func'], kprobe['args']
		if re.findall('{(?P<n>[a-z,A-Z,0-9]*)}', func):
			doError('Kprobe "%s" has format info in the function name "%s"' % (name, func), False)
		for arg in re.findall('{(?P<n>[a-z,A-Z,0-9]*)}', fmt):
			if arg not in args:
				doError('Kprobe "%s" is missing argument "%s"' % (name, arg), False)
		val = 'p:%s_cal %s' % (name, func)
		for i in sorted(args):
			val += ' %s=%s' % (i, args[i])
		val += '\nr:%s_ret %s $retval\n' % (name, func)
		return val
	def addKprobes(self):
		# first test each kprobe
		print('INITIALIZING KPROBES...')
		rejects = []
		for name in sorted(self.kprobes):
			if not self.testKprobe(self.kprobes[name]):
				rejects.append(name)
		# remove all failed ones from the list
		for name in rejects:
			vprint('Skipping KPROBE: %s' % name)
			self.kprobes.pop(name)
		self.fsetVal('', 'kprobe_events')
		kprobeevents = ''
		# set the kprobes all at once
		for kp in self.kprobes:
			val = self.kprobeText(self.kprobes[kp])
			vprint('Adding KPROBE: %s\n%s' % (kp, val.strip()))
			kprobeevents += self.kprobeText(self.kprobes[kp])
		self.fsetVal(kprobeevents, 'kprobe_events')
		# verify that the kprobes were set as ordered
		check = self.fgetVal('kprobe_events')
		linesout = len(kprobeevents.split('\n'))
		linesack = len(check.split('\n'))
		if linesack < linesout:
			# if not, try appending the kprobes 1 by 1
			for kp in self.kprobes:
				kprobeevents = self.kprobeText(self.kprobes[kp])
				self.fsetVal(kprobeevents, 'kprobe_events', 'a')
		self.fsetVal('1', 'events/kprobes/enable')
	def testKprobe(self, kprobe):
		kprobeevents = self.kprobeText(kprobe)
		if not kprobeevents:
			return False
		try:
			self.fsetVal(kprobeevents, 'kprobe_events')
			check = self.fgetVal('kprobe_events')
		except:
			return False
		linesout = len(kprobeevents.split('\n'))
		linesack = len(check.split('\n'))
		if linesack < linesout:
			return False
		return True
	def fsetVal(self, val, path, mode='w'):
		file = self.tpath+path
		if not os.path.exists(file):
			return False
		try:
			fp = open(file, mode)
			fp.write(val)
			fp.close()
		except:
			pass
		return True
	def fgetVal(self, path):
		file = self.tpath+path
		res = ''
		if not os.path.exists(file):
			return res
		try:
			fp = open(file, 'r')
			res = fp.read()
			fp.close()
		except:
			pass
		return res
	def cleanupFtrace(self):
		if(self.usecallgraph or self.usetraceevents):
			self.fsetVal('0', 'events/kprobes/enable')
			self.fsetVal('', 'kprobe_events')
	def setupAllKprobes(self):
		for name in self.tracefuncs:
			self.defaultKprobe(name, self.tracefuncs[name])
		for name in self.dev_tracefuncs:
			self.defaultKprobe(name, self.dev_tracefuncs[name])
	def isCallgraphFunc(self, name):
		if len(self.debugfuncs) < 1 and self.suspendmode == 'command':
			return True
		if name in self.debugfuncs:
			return True
		funclist = []
		for i in self.tracefuncs:
			if 'func' in self.tracefuncs[i]:
				funclist.append(self.tracefuncs[i]['func'])
			else:
				funclist.append(i)
		if name in funclist:
			return True
		return False
	def initFtrace(self, testing=False):
		tp = self.tpath
		print('INITIALIZING FTRACE...')
		# turn trace off
		self.fsetVal('0', 'tracing_on')
		self.cleanupFtrace()
		# set the trace clock to global
		self.fsetVal('global', 'trace_clock')
		# set trace buffer to a huge value
		self.fsetVal('nop', 'current_tracer')
		self.fsetVal('100000', 'buffer_size_kb')
		# go no further if this is just a status check
		if testing:
			return
		if self.usekprobes:
			# add tracefunc kprobes so long as were not using full callgraph
			if(not self.usecallgraph or len(self.debugfuncs) > 0):
				for name in self.tracefuncs:
					self.defaultKprobe(name, self.tracefuncs[name])
				if self.usedevsrc:
					for name in self.dev_tracefuncs:
						self.defaultKprobe(name, self.dev_tracefuncs[name])
			else:
				self.usedevsrc = False
			self.addKprobes()
		# initialize the callgraph trace, unless this is an x2 run
		if(self.usecallgraph):
			# set trace type
			self.fsetVal('function_graph', 'current_tracer')
			self.fsetVal('', 'set_ftrace_filter')
			# set trace format options
			self.fsetVal('print-parent', 'trace_options')
			self.fsetVal('funcgraph-abstime', 'trace_options')
			self.fsetVal('funcgraph-cpu', 'trace_options')
			self.fsetVal('funcgraph-duration', 'trace_options')
			self.fsetVal('funcgraph-proc', 'trace_options')
			self.fsetVal('funcgraph-tail', 'trace_options')
			self.fsetVal('nofuncgraph-overhead', 'trace_options')
			self.fsetVal('context-info', 'trace_options')
			self.fsetVal('graph-time', 'trace_options')
			self.fsetVal('0', 'max_graph_depth')
			if len(self.debugfuncs) > 0:
				self.setFtraceFilterFunctions(self.debugfuncs)
			elif self.suspendmode == 'command':
				self.fsetVal('', 'set_graph_function')
			else:
				cf = ['dpm_run_callback']
				if(self.usetraceeventsonly):
					cf += ['dpm_prepare', 'dpm_complete']
				for fn in self.tracefuncs:
					if 'func' in self.tracefuncs[fn]:
						cf.append(self.tracefuncs[fn]['func'])
					else:
						cf.append(fn)
				self.setFtraceFilterFunctions(cf)
		if(self.usetraceevents):
			# turn trace events on
			events = iter(self.traceevents)
			for e in events:
				self.fsetVal('1', 'events/power/'+e+'/enable')
		# clear the trace buffer
		self.fsetVal('', 'trace')
	def verifyFtrace(self):
		# files needed for any trace data
		files = ['buffer_size_kb', 'current_tracer', 'trace', 'trace_clock',
				 'trace_marker', 'trace_options', 'tracing_on']
		# files needed for callgraph trace data
		tp = self.tpath
		if(self.usecallgraph):
			files += [
				'available_filter_functions',
				'set_ftrace_filter',
				'set_graph_function'
			]
		for f in files:
			if(os.path.exists(tp+f) == False):
				return False
		return True
	def verifyKprobes(self):
		# files needed for kprobes to work
		files = ['kprobe_events', 'events']
		tp = self.tpath
		for f in files:
			if(os.path.exists(tp+f) == False):
				return False
		return True
	def colorText(self, str):
		if not self.ansi:
			return str
		return '\x1B[31;40m'+str+'\x1B[m'
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sysvals = SystemValues()

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# Class: DevProps
# Description:
#	 Simple class which holds property values collected
#	 for all the devices used in the timeline.
class DevProps:
	syspath = ''
	altname = ''
	async = True
	xtraclass = ''
	xtrainfo = ''
	def out(self, dev):
		return '%s,%s,%d;' % (dev, self.altname, self.async)
	def debug(self, dev):
		print '%s:\n\taltname = %s\n\t  async = %s' % (dev, self.altname, self.async)
	def altName(self, dev):
		if not self.altname or self.altname == dev:
			return dev
		return '%s [%s]' % (self.altname, dev)
	def xtraClass(self):
		if self.xtraclass:
			return ' '+self.xtraclass
		if not self.async:
			return ' sync'
		return ''
	def xtraInfo(self):
		if self.xtraclass:
			return ' '+self.xtraclass
		if self.async:
			return ' async'
		return ' sync'

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# Class: DeviceNode
# Description:
#	 A container used to create a device hierachy, with a single root node
#	 and a tree of child nodes. Used by Data.deviceTopology()
class DeviceNode:
	name = ''
	children = 0
	depth = 0
	def __init__(self, nodename, nodedepth):
		self.name = nodename
		self.children = []
		self.depth = nodedepth

# Class: Data
# Description:
#	 The primary container for suspend/resume test data. There is one for
#	 each test run. The data is organized into a cronological hierarchy:
#	 Data.dmesg {
#		root structure, started as dmesg & ftrace, but now only ftrace
#		contents: times for suspend start/end, resume start/end, fwdata
#		phases {
#			10 sequential, non-overlapping phases of S/R
#			contents: times for phase start/end, order/color data for html
#			devlist {
#				device callback or action list for this phase
#				device {
#					a single device callback or generic action
#					contents: start/stop times, pid/cpu/driver info
#						parents/children, html id for timeline/callgraph
#						optionally includes an ftrace callgraph
#						optionally includes intradev trace events
#				}
#			}
#		}
#	}
#
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class Data:
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	dmesg = {}  # root data structure
	phases = [] # ordered list of phases
	start = 0.0 # test start
	end = 0.0   # test end
	tSuspended = 0.0 # low-level suspend start
	tResumed = 0.0   # low-level resume start
	tLow = 0.0       # time spent in low-level suspend (standby/freeze)
	fwValid = False  # is firmware data available
	fwSuspend = 0    # time spent in firmware suspend
	fwResume = 0     # time spent in firmware resume
	dmesgtext = []   # dmesg text file in memory
	testnumber = 0
	idstr = ''
	html_device_id = 0
	stamp = 0
	outfile = ''
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	dev_ubiquitous = ['msleep', 'udelay']
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	def __init__(self, num):
		idchar = 'abcdefghijklmnopqrstuvwxyz'
		self.testnumber = num
		self.idstr = idchar[num]
		self.dmesgtext = []
		self.phases = []
		self.dmesg = { # fixed list of 10 phases
			'suspend_prepare': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#CCFFCC', 'order': 0},
			        'suspend': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#88FF88', 'order': 1},
			   'suspend_late': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#00AA00', 'order': 2},
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			  'suspend_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
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								'row': 0, 'color': '#008888', 'order': 3},
		    'suspend_machine': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#0000FF', 'order': 4},
			 'resume_machine': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#FF0000', 'order': 5},
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			   'resume_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
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								'row': 0, 'color': '#FF9900', 'order': 6},
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			   'resume_early': {'list': dict(), 'start': -1.0, 'end': -1.0,
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								'row': 0, 'color': '#FFCC00', 'order': 7},
			         'resume': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#FFFF88', 'order': 8},
			'resume_complete': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#FFFFCC', 'order': 9}
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		}
		self.phases = self.sortedPhases()
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		self.devicegroups = []
		for phase in self.phases:
			self.devicegroups.append([phase])
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	def getStart(self):
		return self.dmesg[self.phases[0]]['start']
	def setStart(self, time):
		self.start = time
		self.dmesg[self.phases[0]]['start'] = time
	def getEnd(self):
		return self.dmesg[self.phases[-1]]['end']
	def setEnd(self, time):
		self.end = time
		self.dmesg[self.phases[-1]]['end'] = time
	def isTraceEventOutsideDeviceCalls(self, pid, time):
		for phase in self.phases:
			list = self.dmesg[phase]['list']
			for dev in list:
				d = list[dev]
				if(d['pid'] == pid and time >= d['start'] and
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					time < d['end']):
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					return False
		return True
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	def targetDevice(self, phaselist, start, end, pid=-1):
		tgtdev = ''
		for phase in phaselist:
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			list = self.dmesg[phase]['list']
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			for devname in list:
				dev = list[devname]
				if(pid >= 0 and dev['pid'] != pid):
					continue
				devS = dev['start']
				devE = dev['end']
				if(start < devS or start >= devE or end <= devS or end > devE):
					continue
				tgtdev = dev
				break
		return tgtdev
	def addDeviceFunctionCall(self, displayname, kprobename, proc, pid, start, end, cdata, rdata):
		machstart = self.dmesg['suspend_machine']['start']
		machend = self.dmesg['resume_machine']['end']
		tgtdev = self.targetDevice(self.phases, start, end, pid)
		if not tgtdev and start >= machstart and end < machend:
			# device calls in machine phases should be serial
			tgtdev = self.targetDevice(['suspend_machine', 'resume_machine'], start, end)
		if not tgtdev:
			if 'scsi_eh' in proc:
				self.newActionGlobal(proc, start, end, pid)
				self.addDeviceFunctionCall(displayname, kprobename, proc, pid, start, end, cdata, rdata)
			else:
				vprint('IGNORE: %s[%s](%d) [%f - %f] | %s | %s | %s' % (displayname, kprobename,
					pid, start, end, cdata, rdata, proc))
			return False
		# detail block fits within tgtdev
		if('src' not in tgtdev):
			tgtdev['src'] = []
		title = cdata+' '+rdata
		mstr = '\(.*\) *(?P<args>.*) *\((?P<caller>.*)\+.* arg1=(?P<ret>.*)'
		m = re.match(mstr, title)
		if m:
			c = m.group('caller')
			a = m.group('args').strip()
			r = m.group('ret')
			if len(r) > 6:
				r = ''
			else:
				r = 'ret=%s ' % r
			l = '%0.3fms' % ((end - start) * 1000)
			if kprobename in self.dev_ubiquitous:
				title = '%s(%s) <- %s, %s(%s)' % (displayname, a, c, r, l)
			else:
				title = '%s(%s) %s(%s)' % (displayname, a, r, l)
		e = TraceEvent(title, kprobename, start, end - start)
		tgtdev['src'].append(e)
		return True
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	def trimTimeVal(self, t, t0, dT, left):
		if left:
			if(t > t0):
				if(t - dT < t0):
					return t0
				return t - dT
			else:
				return t
		else:
			if(t < t0 + dT):
				if(t > t0):
					return t0 + dT
				return t + dT
			else:
				return t
	def trimTime(self, t0, dT, left):
		self.tSuspended = self.trimTimeVal(self.tSuspended, t0, dT, left)
		self.tResumed = self.trimTimeVal(self.tResumed, t0, dT, left)
		self.start = self.trimTimeVal(self.start, t0, dT, left)
		self.end = self.trimTimeVal(self.end, t0, dT, left)
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		for phase in self.phases:
			p = self.dmesg[phase]
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			p['start'] = self.trimTimeVal(p['start'], t0, dT, left)
			p['end'] = self.trimTimeVal(p['end'], t0, dT, left)
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			list = p['list']
			for name in list:
				d = list[name]
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				d['start'] = self.trimTimeVal(d['start'], t0, dT, left)
				d['end'] = self.trimTimeVal(d['end'], t0, dT, left)
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				if('ftrace' in d):
					cg = d['ftrace']
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					cg.start = self.trimTimeVal(cg.start, t0, dT, left)
					cg.end = self.trimTimeVal(cg.end, t0, dT, left)
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					for line in cg.list:
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						line.time = self.trimTimeVal(line.time, t0, dT, left)
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				if('src' in d):
					for e in d['src']:
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						e.time = self.trimTimeVal(e.time, t0, dT, left)
	def normalizeTime(self, tZero):
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		# trim out any standby or freeze clock time
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		if(self.tSuspended != self.tResumed):
			if(self.tResumed > tZero):
				self.trimTime(self.tSuspended, \
					self.tResumed-self.tSuspended, True)
			else:
				self.trimTime(self.tSuspended, \
					self.tResumed-self.tSuspended, False)
	def newPhaseWithSingleAction(self, phasename, devname, start, end, color):
		for phase in self.phases:
			self.dmesg[phase]['order'] += 1
		self.html_device_id += 1
		devid = '%s%d' % (self.idstr, self.html_device_id)
		list = dict()
		list[devname] = \
			{'start': start, 'end': end, 'pid': 0, 'par': '',
			'length': (end-start), 'row': 0, 'id': devid, 'drv': '' };
		self.dmesg[phasename] = \
			{'list': list, 'start': start, 'end': end,
			'row': 0, 'color': color, 'order': 0}
		self.phases = self.sortedPhases()
	def newPhase(self, phasename, start, end, color, order):
		if(order < 0):
			order = len(self.phases)
		for phase in self.phases[order:]:
			self.dmesg[phase]['order'] += 1
		if(order > 0):
			p = self.phases[order-1]
			self.dmesg[p]['end'] = start
		if(order < len(self.phases)):
			p = self.phases[order]
			self.dmesg[p]['start'] = end
		list = dict()
		self.dmesg[phasename] = \
			{'list': list, 'start': start, 'end': end,
			'row': 0, 'color': color, 'order': order}
		self.phases = self.sortedPhases()
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		self.devicegroups.append([phasename])
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	def setPhase(self, phase, ktime, isbegin):
		if(isbegin):
			self.dmesg[phase]['start'] = ktime
		else:
			self.dmesg[phase]['end'] = ktime
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	def dmesgSortVal(self, phase):
		return self.dmesg[phase]['order']
	def sortedPhases(self):
		return sorted(self.dmesg, key=self.dmesgSortVal)
	def sortedDevices(self, phase):
		list = self.dmesg[phase]['list']
		slist = []
		tmp = dict()
		for devname in list:
			dev = list[devname]
			tmp[dev['start']] = devname
		for t in sorted(tmp):
			slist.append(tmp[t])
		return slist
	def fixupInitcalls(self, phase, end):
		# if any calls never returned, clip them at system resume end
		phaselist = self.dmesg[phase]['list']
		for devname in phaselist:
			dev = phaselist[devname]
			if(dev['end'] < 0):
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				for p in self.phases:
					if self.dmesg[p]['end'] > dev['start']:
						dev['end'] = self.dmesg[p]['end']
						break
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				vprint('%s (%s): callback didnt return' % (devname, phase))
	def deviceFilter(self, devicefilter):
		# remove all by the relatives of the filter devnames
		filter = []
		for phase in self.phases:
			list = self.dmesg[phase]['list']
			for name in devicefilter:
				dev = name
				while(dev in list):
					if(dev not in filter):
						filter.append(dev)
					dev = list[dev]['par']
				children = self.deviceDescendants(name, phase)
				for dev in children:
					if(dev not in filter):
						filter.append(dev)
		for phase in self.phases:
			list = self.dmesg[phase]['list']
			rmlist = []
			for name in list:
				pid = list[name]['pid']
				if(name not in filter and pid >= 0):
					rmlist.append(name)
			for name in rmlist:
				del list[name]
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	def fixupInitcallsThatDidntReturn(self):
		# if any calls never returned, clip them at system resume end
		for phase in self.phases:
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			self.fixupInitcalls(phase, self.getEnd())
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	def isInsideTimeline(self, start, end):
		if(self.start <= start and self.end > start):
			return True
		return False
	def phaseOverlap(self, phases):
		rmgroups = []
		newgroup = []
		for group in self.devicegroups:
			for phase in phases:
				if phase not in group:
					continue
				for p in group:
					if p not in newgroup:
						newgroup.append(p)
				if group not in rmgroups:
					rmgroups.append(group)
		for group in rmgroups:
			self.devicegroups.remove(group)
		self.devicegroups.append(newgroup)
	def newActionGlobal(self, name, start, end, pid=-1, color=''):
		# if event starts before timeline start, expand timeline
		if(start < self.start):
			self.setStart(start)
		# if event ends after timeline end, expand the timeline
		if(end > self.end):
			self.setEnd(end)
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		# which phase is this device callback or action "in"
		targetphase = "none"
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		htmlclass = ''
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		overlap = 0.0
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		phases = []
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		for phase in self.phases:
			pstart = self.dmesg[phase]['start']
			pend = self.dmesg[phase]['end']
			o = max(0, min(end, pend) - max(start, pstart))
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			if o > 0:
				phases.append(phase)
			if o > overlap:
				if overlap > 0 and phase == 'post_resume':
					continue
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				targetphase = phase
				overlap = o
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		if pid == -2:
			htmlclass = ' bg'
		if len(phases) > 1:
			htmlclass = ' bg'
			self.phaseOverlap(phases)
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		if targetphase in self.phases:
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			newname = self.newAction(targetphase, name, pid, '', start, end, '', htmlclass, color)
			return (targetphase, newname)
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		return False
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	def newAction(self, phase, name, pid, parent, start, end, drv, htmlclass='', color=''):
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		# new device callback for a specific phase
		self.html_device_id += 1
		devid = '%s%d' % (self.idstr, self.html_device_id)
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		list = self.dmesg[phase]['list']
		length = -1.0
		if(start >= 0 and end >= 0):
			length = end - start
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		if pid == -2:
			i = 2
			origname = name
			while(name in list):
				name = '%s[%d]' % (origname, i)
				i += 1
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		list[name] = {'start': start, 'end': end, 'pid': pid, 'par': parent,
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					  'length': length, 'row': 0, 'id': devid, 'drv': drv }
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		if htmlclass:
			list[name]['htmlclass'] = htmlclass
		if color:
			list[name]['color'] = color
		return name
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	def deviceIDs(self, devlist, phase):
		idlist = []
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		list = self.dmesg[phase]['list']
		for devname in list:
			if devname in devlist:
				idlist.append(list[devname]['id'])
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		return idlist
	def deviceParentID(self, devname, phase):
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		pdev = ''
		pdevid = ''
		list = self.dmesg[phase]['list']
		if devname in list:
			pdev = list[devname]['par']
		if pdev in list:
			return list[pdev]['id']
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		return pdev
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	def deviceChildren(self, devname, phase):
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		devlist = []
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		list = self.dmesg[phase]['list']
		for child in list:
			if(list[child]['par'] == devname):
				devlist.append(child)
		return devlist
	def deviceDescendants(self, devname, phase):
		children = self.deviceChildren(devname, phase)
		family = children
		for child in children:
			family += self.deviceDescendants(child, phase)
		return family
	def deviceChildrenIDs(self, devname, phase):
		devlist = self.deviceChildren(devname, phase)
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		return self.deviceIDs(devlist, phase)
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	def printDetails(self):
		vprint('          test start: %f' % self.start)
		for phase in self.phases:
			dc = len(self.dmesg[phase]['list'])
			vprint('    %16s: %f - %f (%d devices)' % (phase, \
				self.dmesg[phase]['start'], self.dmesg[phase]['end'], dc))
		vprint('            test end: %f' % self.end)
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	def deviceChildrenAllPhases(self, devname):
		devlist = []
		for phase in self.phases:
			list = self.deviceChildren(devname, phase)
			for dev in list:
				if dev not in devlist:
					devlist.append(dev)
		return devlist
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	def masterTopology(self, name, list, depth):
		node = DeviceNode(name, depth)
		for cname in list:
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			# avoid recursions
			if name == cname:
				continue
			clist = self.deviceChildrenAllPhases(cname)
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			cnode = self.masterTopology(cname, clist, depth+1)
			node.children.append(cnode)
		return node
	def printTopology(self, node):
		html = ''
		if node.name:
			info = ''
			drv = ''
			for phase in self.phases:
				list = self.dmesg[phase]['list']
				if node.name in list:
					s = list[node.name]['start']
					e = list[node.name]['end']
					if list[node.name]['drv']:
						drv = ' {'+list[node.name]['drv']+'}'
					info += ('<li>%s: %.3fms</li>' % (phase, (e-s)*1000))
			html += '<li><b>'+node.name+drv+'</b>'
			if info:
				html += '<ul>'+info+'</ul>'
			html += '</li>'
		if len(node.children) > 0:
			html += '<ul>'
			for cnode in node.children:
				html += self.printTopology(cnode)
			html += '</ul>'
		return html
	def rootDeviceList(self):
		# list of devices graphed
		real = []
		for phase in self.dmesg:
			list = self.dmesg[phase]['list']
			for dev in list:
				if list[dev]['pid'] >= 0 and dev not in real:
					real.append(dev)
		# list of top-most root devices
		rootlist = []
		for phase in self.dmesg:
			list = self.dmesg[phase]['list']
			for dev in list:
				pdev = list[dev]['par']
1089 1090
				pid = list[dev]['pid']
				if(pid < 0 or re.match('[0-9]*-[0-9]*\.[0-9]*[\.0-9]*\:[\.0-9]*$', pdev)):
1091 1092 1093 1094 1095 1096 1097 1098
					continue
				if pdev and pdev not in real and pdev not in rootlist:
					rootlist.append(pdev)
		return rootlist
	def deviceTopology(self):
		rootlist = self.rootDeviceList()
		master = self.masterTopology('', rootlist, 0)
		return self.printTopology(master)
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	def selectTimelineDevices(self, widfmt, tTotal, mindevlen):
		# only select devices that will actually show up in html
		self.tdevlist = dict()
		for phase in self.dmesg:
			devlist = []
			list = self.dmesg[phase]['list']
			for dev in list:
				length = (list[dev]['end'] - list[dev]['start']) * 1000
				width = widfmt % (((list[dev]['end']-list[dev]['start'])*100)/tTotal)
				if width != '0.000000' and length >= mindevlen:
					devlist.append(dev)
			self.tdevlist[phase] = devlist
1111 1112 1113 1114 1115

# Class: TraceEvent
# Description:
#	 A container for trace event data found in the ftrace file
class TraceEvent:
1116
	text = ''
1117 1118
	time = 0.0
	length = 0.0
1119 1120 1121 1122 1123
	title = ''
	row = 0
	def __init__(self, a, n, t, l):
		self.title = a
		self.text = n
1124
		self.time = t
1125
		self.length = l
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137

# Class: FTraceLine
# Description:
#	 A container for a single line of ftrace data. There are six basic types:
#		 callgraph line:
#			  call: "  dpm_run_callback() {"
#			return: "  }"
#			  leaf: " dpm_run_callback();"
#		 trace event:
#			 tracing_mark_write: SUSPEND START or RESUME COMPLETE
#			 suspend_resume: phase or custom exec block data
#			 device_pm_callback: device callback info
1138 1139 1140 1141 1142 1143
class FTraceLine:
	time = 0.0
	length = 0.0
	fcall = False
	freturn = False
	fevent = False
1144
	fkprobe = False
1145
	depth = 0
1146 1147
	name = ''
	type = ''
1148
	def __init__(self, t, m='', d=''):
1149
		self.time = float(t)
1150 1151
		if not m and not d:
			return
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
		# is this a trace event
		if(d == 'traceevent' or re.match('^ *\/\* *(?P<msg>.*) \*\/ *$', m)):
			if(d == 'traceevent'):
				# nop format trace event
				msg = m
			else:
				# function_graph format trace event
				em = re.match('^ *\/\* *(?P<msg>.*) \*\/ *$', m)
				msg = em.group('msg')

			emm = re.match('^(?P<call>.*?): (?P<msg>.*)', msg)
			if(emm):
				self.name = emm.group('msg')
				self.type = emm.group('call')
			else:
				self.name = msg
1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
			km = re.match('^(?P<n>.*)_cal$', self.type)
			if km:
				self.fcall = True
				self.fkprobe = True
				self.type = km.group('n')
				return
			km = re.match('^(?P<n>.*)_ret$', self.type)
			if km:
				self.freturn = True
				self.fkprobe = True
				self.type = km.group('n')
				return
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			self.fevent = True
			return
		# convert the duration to seconds
		if(d):
			self.length = float(d)/1000000
		# the indentation determines the depth
1186
		match = re.match('^(?P<d> *)(?P<o>.*)$', m)
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		if(not match):
			return
		self.depth = self.getDepth(match.group('d'))
		m = match.group('o')
		# function return
		if(m[0] == '}'):
			self.freturn = True
			if(len(m) > 1):
				# includes comment with function name
1196
				match = re.match('^} *\/\* *(?P<n>.*) *\*\/$', m)
1197
				if(match):
1198
					self.name = match.group('n').strip()
1199 1200 1201 1202 1203
		# function call
		else:
			self.fcall = True
			# function call with children
			if(m[-1] == '{'):
1204
				match = re.match('^(?P<n>.*) *\(.*', m)
1205
				if(match):
1206
					self.name = match.group('n').strip()
1207 1208 1209
			# function call with no children (leaf)
			elif(m[-1] == ';'):
				self.freturn = True
1210
				match = re.match('^(?P<n>.*) *\(.*', m)
1211
				if(match):
1212
					self.name = match.group('n').strip()
1213 1214 1215 1216 1217
			# something else (possibly a trace marker)
			else:
				self.name = m
	def getDepth(self, str):
		return len(str)/2
1218
	def debugPrint(self, dev=''):
1219 1220 1221 1222 1223 1224 1225 1226 1227
		if(self.freturn and self.fcall):
			print('%s -- %f (%02d): %s(); (%.3f us)' % (dev, self.time, \
				self.depth, self.name, self.length*1000000))
		elif(self.freturn):
			print('%s -- %f (%02d): %s} (%.3f us)' % (dev, self.time, \
				self.depth, self.name, self.length*1000000))
		else:
			print('%s -- %f (%02d): %s() { (%.3f us)' % (dev, self.time, \
				self.depth, self.name, self.length*1000000))
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	def startMarker(self):
		global sysvals
		# Is this the starting line of a suspend?
		if not self.fevent:
			return False
		if sysvals.usetracemarkers:
			if(self.name == 'SUSPEND START'):
				return True
			return False
		else:
			if(self.type == 'suspend_resume' and
				re.match('suspend_enter\[.*\] begin', self.name)):
				return True
			return False
	def endMarker(self):
		# Is this the ending line of a resume?
		if not self.fevent:
			return False
		if sysvals.usetracemarkers:
			if(self.name == 'RESUME COMPLETE'):
				return True
			return False
		else:
			if(self.type == 'suspend_resume' and
				re.match('thaw_processes\[.*\] end', self.name)):
				return True
			return False
1255

1256 1257 1258 1259 1260 1261
# Class: FTraceCallGraph
# Description:
#	 A container for the ftrace callgraph of a single recursive function.
#	 This can be a dpm_run_callback, dpm_prepare, or dpm_complete callgraph
#	 Each instance is tied to a single device in a single phase, and is
#	 comprised of an ordered list of FTraceLine objects
1262 1263 1264 1265 1266 1267
class FTraceCallGraph:
	start = -1.0
	end = -1.0
	list = []
	invalid = False
	depth = 0
1268 1269
	pid = 0
	def __init__(self, pid):
1270 1271 1272 1273
		self.start = -1.0
		self.end = -1.0
		self.list = []
		self.depth = 0
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		self.pid = pid
	def addLine(self, line, debug=False):
		# if this is already invalid, just leave
		if(self.invalid):
			return False
		# invalidate on too much data or bad depth
		if(len(self.list) >= 1000000 or self.depth < 0):
			self.invalidate(line)
			return False
		# compare current depth with this lines pre-call depth
		prelinedep = line.depth
		if(line.freturn and not line.fcall):
			prelinedep += 1
		last = 0
		lasttime = line.time
		virtualfname = 'execution_misalignment'
		if len(self.list) > 0:
			last = self.list[-1]
			lasttime = last.time
		# handle low misalignments by inserting returns
		if prelinedep < self.depth:
			if debug and last:
				print '-------- task %d --------' % self.pid
				last.debugPrint()
			idx = 0
			# add return calls to get the depth down
			while prelinedep < self.depth:
				if debug:
					print 'MISALIGN LOW (add returns): C%d - eC%d' % (self.depth, prelinedep)
				self.depth -= 1
				if idx == 0 and last and last.fcall and not last.freturn:
					# special case, turn last call into a leaf
					last.depth = self.depth
					last.freturn = True
					last.length = line.time - last.time
					if debug:
						last.debugPrint()
				else:
					vline = FTraceLine(lasttime)
					vline.depth = self.depth
					vline.name = virtualfname
					vline.freturn = True
					self.list.append(vline)
					if debug:
						vline.debugPrint()
				idx += 1
			if debug:
				line.debugPrint()
				print ''
		# handle high misalignments by inserting calls
		elif prelinedep > self.depth:
			if debug and last:
				print '-------- task %d --------' % self.pid
				last.debugPrint()
			idx = 0
			# add calls to get the depth up
			while prelinedep > self.depth:
				if debug:
					print 'MISALIGN HIGH (add calls): C%d - eC%d' % (self.depth, prelinedep)
				if idx == 0 and line.freturn and not line.fcall:
					# special case, turn this return into a leaf
					line.fcall = True
					prelinedep -= 1
				else:
					vline = FTraceLine(lasttime)
					vline.depth = self.depth
					vline.name = virtualfname
					vline.fcall = True
					if debug:
						vline.debugPrint()
					self.list.append(vline)
					self.depth += 1
					if not last:
						self.start = vline.time
				idx += 1
			if debug:
				line.debugPrint()
				print ''
		# process the call and set the new depth
1353 1354 1355 1356
		if(line.fcall and not line.freturn):
			self.depth += 1
		elif(line.freturn and not line.fcall):
			self.depth -= 1
1357 1358 1359
		if len(self.list) < 1:
			self.start = line.time
		self.list.append(line)
1360
		if(line.depth == 0 and line.freturn):
1361 1362
			if(self.start < 0):
				self.start = line.time
1363
			self.end = line.time
1364 1365 1366 1367
			if line.fcall:
				self.end += line.length
			if self.list[0].name == virtualfname:
				self.invalid = True
1368 1369
			return True
		return False
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	def invalidate(self, line):
		if(len(self.list) > 0):
			first = self.list[0]
			self.list = []
			self.list.append(first)
		self.invalid = True
		id = 'task %s' % (self.pid)
		window = '(%f - %f)' % (self.start, line.time)
		if(self.depth < 0):
			vprint('Too much data for '+id+\
				' (buffer overflow), ignoring this callback')
		else:
			vprint('Too much data for '+id+\
				' '+window+', ignoring this callback')
1384
	def slice(self, t0, tN):
1385
		minicg = FTraceCallGraph(0)
1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
		count = -1
		firstdepth = 0
		for l in self.list:
			if(l.time < t0 or l.time > tN):
				continue
			if(count < 0):
				if(not l.fcall or l.name == 'dev_driver_string'):
					continue
				firstdepth = l.depth
				count = 0
			l.depth -= firstdepth
1397
			minicg.addLine(l)
1398 1399 1400 1401 1402
			if((count == 0 and l.freturn and l.fcall) or
				(count > 0 and l.depth <= 0)):
				break
			count += 1
		return minicg
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	def repair(self, enddepth):
		# bring the depth back to 0 with additional returns
		fixed = False
		last = self.list[-1]
		for i in reversed(range(enddepth)):
			t = FTraceLine(last.time)
			t.depth = i
			t.freturn = True
			fixed = self.addLine(t)
			if fixed:
				self.end = last.time
				return True
		return False
	def postProcess(self, debug=False):
1417 1418 1419 1420 1421 1422 1423
		stack = dict()
		cnt = 0
		for l in self.list:
			if(l.fcall and not l.freturn):
				stack[l.depth] = l
				cnt += 1
			elif(l.freturn and not l.fcall):
1424
				if(l.depth not in stack):
1425 1426 1427
					if debug:
						print 'Post Process Error: Depth missing'
						l.debugPrint()
1428
					return False
1429
				# transfer total time from return line to call line
1430
				stack[l.depth].length = l.length
1431
				stack.pop(l.depth)
1432 1433 1434
				l.length = 0
				cnt -= 1
		if(cnt == 0):
1435
			# trace caught the whole call tree
1436
			return True
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507
		elif(cnt < 0):
			if debug:
				print 'Post Process Error: Depth is less than 0'
			return False
		# trace ended before call tree finished
		return self.repair(cnt)
	def deviceMatch(self, pid, data):
		found = False
		# add the callgraph data to the device hierarchy
		borderphase = {
			'dpm_prepare': 'suspend_prepare',
			'dpm_complete': 'resume_complete'
		}
		if(self.list[0].name in borderphase):
			p = borderphase[self.list[0].name]
			list = data.dmesg[p]['list']
			for devname in list:
				dev = list[devname]
				if(pid == dev['pid'] and
					self.start <= dev['start'] and
					self.end >= dev['end']):
					dev['ftrace'] = self.slice(dev['start'], dev['end'])
					found = True
			return found
		for p in data.phases:
			if(data.dmesg[p]['start'] <= self.start and
				self.start <= data.dmesg[p]['end']):
				list = data.dmesg[p]['list']
				for devname in list:
					dev = list[devname]
					if(pid == dev['pid'] and
						self.start <= dev['start'] and
						self.end >= dev['end']):
						dev['ftrace'] = self
						found = True
						break
				break
		return found
	def newActionFromFunction(self, data):
		name = self.list[0].name
		if name in ['dpm_run_callback', 'dpm_prepare', 'dpm_complete']:
			return
		fs = self.start
		fe = self.end
		if fs < data.start or fe > data.end:
			return
		phase = ''
		for p in data.phases:
			if(data.dmesg[p]['start'] <= self.start and
				self.start < data.dmesg[p]['end']):
				phase = p
				break
		if not phase:
			return
		out = data.newActionGlobal(name, fs, fe, -2)
		if out:
			phase, myname = out
			data.dmesg[phase]['list'][myname]['ftrace'] = self
	def debugPrint(self):
		print('[%f - %f] %s (%d)') % (self.start, self.end, self.list[0].name, self.pid)
		for l in self.list:
			if(l.freturn and l.fcall):
				print('%f (%02d): %s(); (%.3f us)' % (l.time, \
					l.depth, l.name, l.length*1000000))
			elif(l.freturn):
				print('%f (%02d): %s} (%.3f us)' % (l.time, \
					l.depth, l.name, l.length*1000000))
			else:
				print('%f (%02d): %s() { (%.3f us)' % (l.time, \
					l.depth, l.name, l.length*1000000))
		print(' ')
1508

1509 1510
# Class: Timeline
# Description:
1511 1512
#	 A container for a device timeline which calculates
#	 all the html properties to display it correctly
1513 1514
class Timeline:
	html = {}
1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525
	height = 0	# total timeline height
	scaleH = 20	# timescale (top) row height
	rowH = 30	# device row height
	bodyH = 0	# body height
	rows = 0	# total timeline rows
	phases = []
	rowmaxlines = dict()
	rowcount = dict()
	rowheight = dict()
	def __init__(self, rowheight):
		self.rowH = rowheight
1526
		self.html = {
1527
			'header': '',
1528 1529
			'timeline': '',
			'legend': '',
1530
		}
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	# Function: getDeviceRows
	# Description:
	#    determine how may rows the device funcs will take
	# Arguments:
	#	 rawlist: the list of devices/actions for a single phase
	# Output:
	#	 The total number of rows needed to display this phase of the timeline
	def getDeviceRows(self, rawlist):
		# clear all rows and set them to undefined
		lendict = dict()
		for item in rawlist:
			item.row = -1
			lendict[item] = item.length
		list = []
		for i in sorted(lendict, key=lendict.get, reverse=True):
			list.append(i)
		remaining = len(list)
		rowdata = dict()
		row = 1
		# try to pack each row with as many ranges as possible
		while(remaining > 0):
			if(row not in rowdata):
				rowdata[row] = []
			for i in list:
				if(i.row >= 0):
					continue
				s = i.time
				e = i.time + i.length
				valid = True
				for ritem in rowdata[row]:
					rs = ritem.time
					re = ritem.time + ritem.length
					if(not (((s <= rs) and (e <= rs)) or
						((s >= re) and (e >= re)))):
						valid = False
						break
				if(valid):
					rowdata[row].append(i)
					i.row = row
					remaining -= 1
			row += 1
		return row
	# Function: getPhaseRows
	# Description:
	#	 Organize the timeline entries into the smallest
	#	 number of rows possible, with no entry overlapping
	# Arguments:
	#	 list: the list of devices/actions for a single phase
	#	 devlist: string list of device names to use
	# Output:
	#	 The total number of rows needed to display this phase of the timeline
	def getPhaseRows(self, dmesg, devlist):
		# clear all rows and set them to undefined
		remaining = len(devlist)
		rowdata = dict()
		row = 0
		lendict = dict()
		myphases = []
		for item in devlist:
			if item[0] not in self.phases:
				self.phases.append(item[0])
			if item[0] not in myphases:
				myphases.append(item[0])
				self.rowmaxlines[item[0]] = dict()
				self.rowheight[item[0]] = dict()
			dev = dmesg[item[0]]['list'][item[1]]
			dev['row'] = -1
			lendict[item] = float(dev['end']) - float(dev['start'])
			if 'src' in dev:
				dev['devrows'] = self.getDeviceRows(dev['src'])
		lenlist = []
		for i in sorted(lendict, key=lendict.get, reverse=True):
			lenlist.append(i)
		orderedlist = []
		for item in lenlist:
			dev = dmesg[item[0]]['list'][item[1]]
			if dev['pid'] == -2:
				orderedlist.append(item)
		for item in lenlist:
			if item not in orderedlist:
				orderedlist.append(item)
		# try to pack each row with as many ranges as possible
		while(remaining > 0):
			rowheight = 1
			if(row not in rowdata):
				rowdata[row] = []
			for item in orderedlist:
				dev = dmesg[item[0]]['list'][item[1]]
				if(dev['row'] < 0):
					s = dev['start']
					e = dev['end']
					valid = True
					for ritem in rowdata[row]:
						rs = ritem['start']
						re = ritem['end']
						if(not (((s <= rs) and (e <= rs)) or
							((s >= re) and (e >= re)))):
							valid = False
							break
					if(valid):
						rowdata[row].append(dev)
						dev['row'] = row
						remaining -= 1
						if 'devrows' in dev and dev['devrows'] > rowheight:
							rowheight = dev['devrows']
			for phase in myphases:
				self.rowmaxlines[phase][row] = rowheight
				self.rowheight[phase][row] = rowheight * self.rowH
			row += 1
		if(row > self.rows):
			self.rows = int(row)
		for phase in myphases:
			self.rowcount[phase] = row
		return row
	def phaseRowHeight(self, phase, row):
		return self.rowheight[phase][row]
	def phaseRowTop(self, phase, row):
		top = 0
		for i in sorted(self.rowheight[phase]):
			if i >= row:
				break
			top += self.rowheight[phase][i]
		return top
	# Function: calcTotalRows
	# Description:
	#	 Calculate the heights and offsets for the header and rows
	def calcTotalRows(self):
		maxrows = 0
		standardphases = []
		for phase in self.phases:
			total = 0
			for i in sorted(self.rowmaxlines[phase]):
				total += self.rowmaxlines[phase][i]
			if total > maxrows:
				maxrows = total
			if total == self.rowcount[phase]:
				standardphases.append(phase)
		self.height = self.scaleH + (maxrows*self.rowH)
		self.bodyH = self.height - self.scaleH
		for phase in standardphases:
			for i in sorted(self.rowheight[phase]):
				self.rowheight[phase][i] = self.bodyH/self.rowcount[phase]
	# Function: createTimeScale
	# Description:
	#	 Create the timescale for a timeline block
	# Arguments:
	#	 m0: start time (mode begin)
	#	 mMax: end time (mode end)
	#	 tTotal: total timeline time
	#	 mode: suspend or resume
	# Output:
	#	 The html code needed to display the time scale
	def createTimeScale(self, m0, mMax, tTotal, mode):
		timescale = '<div class="t" style="right:{0}%">{1}</div>\n'
		rline = '<div class="t" style="left:0;border-left:1px solid black;border-right:0;">Resume</div>\n'
		output = '<div class="timescale">\n'
		# set scale for timeline
		mTotal = mMax - m0
		tS = 0.1
		if(tTotal <= 0):
			return output+'</div>\n'
		if(tTotal > 4):
			tS = 1
		divTotal = int(mTotal/tS) + 1
		divEdge = (mTotal - tS*(divTotal-1))*100/mTotal
		for i in range(divTotal):
			htmlline = ''
			if(mode == 'resume'):
				pos = '%0.3f' % (100 - ((float(i)*tS*100)/mTotal))
				val = '%0.fms' % (float(i)*tS*1000)
				htmlline = timescale.format(pos, val)
				if(i == 0):
					htmlline = rline
			else:
				pos = '%0.3f' % (100 - ((float(i)*tS*100)/mTotal) - divEdge)
				val = '%0.fms' % (float(i-divTotal+1)*tS*1000)
				if(i == divTotal - 1):
					val = 'Suspend'
				htmlline = timescale.format(pos, val)
			output += htmlline
		output += '</div>\n'
		return output
1713

1714
# Class: TestProps
1715
# Description:
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#	 A list of values describing the properties of these test runs
class TestProps:
	stamp = ''
	tracertype = ''
	S0i3 = False
	fwdata = []
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	ftrace_line_fmt_fg = \
		'^ *(?P<time>[0-9\.]*) *\| *(?P<cpu>[0-9]*)\)'+\
		' *(?P<proc>.*)-(?P<pid>[0-9]*) *\|'+\
1725
		'[ +!#\*@$]*(?P<dur>[0-9\.]*) .*\|  (?P<msg>.*)'
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	ftrace_line_fmt_nop = \
		' *(?P<proc>.*)-(?P<pid>[0-9]*) *\[(?P<cpu>[0-9]*)\] *'+\
		'(?P<flags>.{4}) *(?P<time>[0-9\.]*): *'+\
		'(?P<msg>.*)'
	ftrace_line_fmt = ftrace_line_fmt_nop
	cgformat = False
	data = 0
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	ktemp = dict()
	def __init__(self):
		self.ktemp = dict()
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	def setTracerType(self, tracer):
		self.tracertype = tracer
		if(tracer == 'function_graph'):
			self.cgformat = True
			self.ftrace_line_fmt = self.ftrace_line_fmt_fg
		elif(tracer == 'nop'):
			self.ftrace_line_fmt = self.ftrace_line_fmt_nop
		else:
			doError('Invalid tracer format: [%s]' % tracer, False)
1745

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# Class: TestRun
# Description:
#	 A container for a suspend/resume test run. This is necessary as
#	 there could be more than one, and they need to be separate.
class TestRun:
	ftemp = dict()
	ttemp = dict()
	data = 0
	def __init__(self, dataobj):
		self.data = dataobj
		self.ftemp = dict()
		self.ttemp = dict()

1759
# ----------------- FUNCTIONS --------------------
1760

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# Function: vprint
# Description:
#	 verbose print (prints only with -verbose option)
# Arguments:
#	 msg: the debug/log message to print
def vprint(msg):
	global sysvals
	if(sysvals.verbose):
		print(msg)
1770

1771
# Function: parseStamp
1772
# Description:
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#	 Pull in the stamp comment line from the data file(s),
#	 create the stamp, and add it to the global sysvals object
# Arguments:
#	 m: the valid re.match output for the stamp line
1777
def parseStamp(line, data):
1778
	global sysvals
1779 1780

	m = re.match(sysvals.stampfmt, line)
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	data.stamp = {'time': '', 'host': '', 'mode': ''}
	dt = datetime(int(m.group('y'))+2000, int(m.group('m')),
		int(m.group('d')), int(m.group('H')), int(m.group('M')),
		int(m.group('S')))
	data.stamp['time'] = dt.strftime('%B %d %Y, %I:%M:%S %p')
	data.stamp['host'] = m.group('host')
	data.stamp['mode'] = m.group('mode')
	data.stamp['kernel'] = m.group('kernel')
1789
	sysvals.hostname = data.stamp['host']
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	sysvals.suspendmode = data.stamp['mode']
	if not sysvals.stamp:
		sysvals.stamp = data.stamp

# Function: diffStamp
# Description:
#	compare the host, kernel, and mode fields in 3 stamps
# Arguments:
#	 stamp1: string array with mode, kernel, and host
#	 stamp2: string array with mode, kernel, and host
# Return:
#	True if stamps differ, False if they're the same
def diffStamp(stamp1, stamp2):
	if 'host' in stamp1 and 'host' in stamp2:
		if stamp1['host'] != stamp2['host']:
			return True
	if 'kernel' in stamp1 and 'kernel' in stamp2:
		if stamp1['kernel'] != stamp2['kernel']:
			return True
	if 'mode' in stamp1 and 'mode' in stamp2:
		if stamp1['mode'] != stamp2['mode']:
			return True
	return False

# Function: doesTraceLogHaveTraceEvents
# Description:
#	 Quickly determine if the ftrace log has some or all of the trace events
#	 required for primary parsing. Set the usetraceevents and/or
#	 usetraceeventsonly flags in the global sysvals object
def doesTraceLogHaveTraceEvents():
	global sysvals

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	# check for kprobes
	sysvals.usekprobes = False
	out = os.system('grep -q "_cal: (" '+sysvals.ftracefile)
	if(out == 0):
		sysvals.usekprobes = True
	# check for callgraph data on trace event blocks
	out = os.system('grep -q "_cpu_down()" '+sysvals.ftracefile)
	if(out == 0):
		sysvals.usekprobes = True
	out = os.popen('head -1 '+sysvals.ftracefile).read().replace('\n', '')
	m = re.match(sysvals.stampfmt, out)
	if m and m.group('mode') == 'command':
		sysvals.usetraceeventsonly = True
		sysvals.usetraceevents = True
		return
	# figure out what level of trace events are supported
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	sysvals.usetraceeventsonly = True
	sysvals.usetraceevents = False
	for e in sysvals.traceevents:
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		out = os.system('grep -q "'+e+': " '+sysvals.ftracefile)
		if(out != 0):
1843
			sysvals.usetraceeventsonly = False
1844
		if(e == 'suspend_resume' and out == 0):
1845
			sysvals.usetraceevents = True
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	# determine is this log is properly formatted
	for e in ['SUSPEND START', 'RESUME COMPLETE']:
		out = os.system('grep -q "'+e+'" '+sysvals.ftracefile)
		if(out != 0):
			sysvals.usetracemarkers = False
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# Function: appendIncompleteTraceLog
# Description:
#	 [deprecated for kernel 3.15 or newer]
#	 Legacy support of ftrace outputs that lack the device_pm_callback
#	 and/or suspend_resume trace events. The primary data should be
#	 taken from dmesg, and this ftrace is used only for callgraph data
#	 or custom actions in the timeline. The data is appended to the Data
#	 objects provided.
# Arguments:
#	 testruns: the array of Data objects obtained from parseKernelLog
def appendIncompleteTraceLog(testruns):
	global sysvals

	# create TestRun vessels for ftrace parsing
	testcnt = len(testruns)
1867
	testidx = 0
1868 1869 1870 1871 1872 1873
	testrun = []
	for data in testruns:
		testrun.append(TestRun(data))

	# extract the callgraph and traceevent data
	vprint('Analyzing the ftrace data...')
1874
	tp = TestProps()
1875
	tf = open(sysvals.ftracefile, 'r')
1876
	data = 0
1877
	for line in tf:
1878 1879
		# remove any latent carriage returns
		line = line.replace('\r\n', '')
1880
		# grab the time stamp
1881 1882
		m = re.match(sysvals.stampfmt, line)
		if(m):
1883
			tp.stamp = line
1884 1885 1886 1887
			continue
		# determine the trace data type (required for further parsing)
		m = re.match(sysvals.tracertypefmt, line)
		if(m):
1888 1889 1890 1891 1892
			tp.setTracerType(m.group('t'))
			continue
		# device properties line
		if(re.match(sysvals.devpropfmt, line)):
			devProps(line)
1893
			continue
1894 1895
		# parse only valid lines, if this is not one move on
		m = re.match(tp.ftrace_line_fmt, line)
1896 1897
		if(not m):
			continue
1898 1899 1900 1901
		# gather the basic message data from the line
		m_time = m.group('time')
		m_pid = m.group('pid')
		m_msg = m.group('msg')
1902
		if(tp.cgformat):
1903 1904 1905
			m_param3 = m.group('dur')
		else:
			m_param3 = 'traceevent'
1906
		if(m_time and m_pid and m_msg):
1907
			t = FTraceLine(m_time, m_msg, m_param3)
1908 1909 1910 1911 1912 1913
			pid = int(m_pid)
		else:
			continue
		# the line should be a call, return, or event
		if(not t.fcall and not t.freturn and not t.fevent):
			continue
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