path: root/scripts/analyze_suspend.py

#!/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>
#
# 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
#
#	 For kernel versions older than 3.15:
#	 The following additional kernel parameters are required:
#		 (e.g. in file /etc/default/grub)
#		 GRUB_CMDLINE_LINUX_DEFAULT="... initcall_debug log_buf_len=16M ..."
#

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

import sys
import time
import os
import string
import re
import platform
from datetime import datetime
import struct

# ----------------- CLASSES --------------------

# Class: SystemValues
# Description:
#	 A global, single-instance container used to
#	 store system values and test parameters
class SystemValues:
	version = 3.0
	verbose = False
	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'
	]
	modename = {
		'freeze': 'Suspend-To-Idle (S0)',
		'standby': 'Power-On Suspend (S1)',
		'mem': 'Suspend-to-RAM (S3)',
		'disk': 'Suspend-to-disk (S4)'
	}
	mempath = '/dev/mem'
	powerfile = '/sys/power/state'
	suspendmode = 'mem'
	hostname = 'localhost'
	prefix = 'test'
	teststamp = ''
	dmesgfile = ''
	ftracefile = ''
	htmlfile = ''
	rtcwake = False
	rtcwaketime = 10
	rtcpath = ''
	android = False
	adb = 'adb'
	devicefilter = []
	stamp = 0
	execcount = 1
	x2delay = 0
	usecallgraph = False
	usetraceevents = False
	usetraceeventsonly = False
	notestrun = False
	altdevname = dict()
	postresumetime = 0
	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>.*)$'
	def __init__(self):
		self.hostname = platform.node()
		if(self.hostname == ''):
			self.hostname = 'localhost'
		rtc = "rtc0"
		if os.path.exists('/dev/rtc'):
			rtc = os.readlink('/dev/rtc')
		rtc = '/sys/class/rtc/'+rtc
		if os.path.exists(rtc) and os.path.exists(rtc+'/date') and \
			os.path.exists(rtc+'/time') and os.path.exists(rtc+'/wakealarm'):
			self.rtcpath = rtc
	def setOutputFile(self):
		if((self.htmlfile == '') and (self.dmesgfile != '')):
			m = re.match('(?P<name>.*)_dmesg\.txt$', self.dmesgfile)
			if(m):
				self.htmlfile = m.group('name')+'.html'
		if((self.htmlfile == '') and (self.ftracefile != '')):
			m = re.match('(?P<name>.*)_ftrace\.txt$', self.ftracefile)
			if(m):
				self.htmlfile = m.group('name')+'.html'
		if(self.htmlfile == ''):
			self.htmlfile = 'output.html'
	def initTestOutput(self, subdir):
		if(not self.android):
			self.prefix = self.hostname
			v = open('/proc/version', 'r').read().strip()
			kver = string.split(v)[2]
		else:
			self.prefix = 'android'
			v = os.popen(self.adb+' shell cat /proc/version').read().strip()
			kver = string.split(v)[2]
		testtime = datetime.now().strftime('suspend-%m%d%y-%H%M%S')
		if(subdir != "."):
			self.testdir = subdir+"/"+testtime
		else:
			self.testdir = testtime
		self.teststamp = \
			'# '+testtime+' '+self.prefix+' '+self.suspendmode+' '+kver
		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'
		os.mkdir(self.testdir)
	def setDeviceFilter(self, devnames):
		self.devicefilter = string.split(devnames)
	def rtcWakeAlarm(self):
		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))

sysvals = SystemValues()

# 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
#				}
#			}
#		}
#	}
#
class Data:
	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 = ''
	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},
			  'suspend_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'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},
			   'resume_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'row': 0, 'color': '#FF9900', 'order': 6},
			   'resume_early': {'list': dict(), 'start': -1.0, 'end': -1.0,
								'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}
		}
		self.phases = self.sortedPhases()
	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
					time <= d['end']):
					return False
		return True
	def addIntraDevTraceEvent(self, action, name, pid, time):
		if(action == 'mutex_lock_try'):
			color = 'red'
		elif(action == 'mutex_lock_pass'):
			color = 'green'
		elif(action == 'mutex_unlock'):
			color = 'blue'
		else:
			# create separate colors based on the name
			v1 = len(name)*10 % 256
			v2 = string.count(name, 'e')*100 % 256
			v3 = ord(name[0])*20 % 256
			color = '#%06X' % ((v1*0x10000) + (v2*0x100) + v3)
		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
					time <= d['end']):
					e = TraceEvent(action, name, color, time)
					if('traceevents' not in d):
						d['traceevents'] = []
					d['traceevents'].append(e)
					return d
					break
		return 0
	def capIntraDevTraceEvent(self, action, name, 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
					time <= d['end']):
					if('traceevents' not in d):
						return
					for e in d['traceevents']:
						if(e.action == action and
							e.name == name and not e.ready):
							e.length = time - e.time
							e.ready = True
							break
					return
	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)
		for phase in self.phases:
			p = self.dmesg[phase]
			p['start'] = self.trimTimeVal(p['start'], t0, dT, left)
			p['end'] = self.trimTimeVal(p['end'], t0, dT, left)
			list = p['list']
			for name in list:
				d = list[name]
				d['start'] = self.trimTimeVal(d['start'], t0, dT, left)
				d['end'] = self.trimTimeVal(d['end'], t0, dT, left)
				if('ftrace' in d):
					cg = d['ftrace']
					cg.start = self.trimTimeVal(cg.start, t0, dT, left)
					cg.end = self.trimTimeVal(cg.end, t0, dT, left)
					for line in cg.list:
						line.time = self.trimTimeVal(line.time, t0, dT, left)
				if('traceevents' in d):
					for e in d['traceevents']:
						e.time = self.trimTimeVal(e.time, t0, dT, left)
	def normalizeTime(self, tZero):
		# first trim out any standby or freeze clock time
		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)
		# shift the timeline so that tZero is the new 0
		self.tSuspended -= tZero
		self.tResumed -= tZero
		self.start -= tZero
		self.end -= tZero
		for phase in self.phases:
			p = self.dmesg[phase]
			p['start'] -= tZero
			p['end'] -= tZero
			list = p['list']
			for name in list:
				d = list[name]
				d['start'] -= tZero
				d['end'] -= tZero
				if('ftrace' in d):
					cg = d['ftrace']
					cg.start -= tZero
					cg.end -= tZero
					for line in cg.list:
						line.time -= tZero
				if('traceevents' in d):
					for e in d['traceevents']:
						e.time -= tZero
	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()
	def setPhase(self, phase, ktime, isbegin):
		if(isbegin):
			self.dmesg[phase]['start'] = ktime
		else:
			self.dmesg[phase]['end'] = ktime
	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):
				dev['end'] = end
				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]
	def fixupInitcallsThatDidntReturn(self):
		# if any calls never returned, clip them at system resume end
		for phase in self.phases:
			self.fixupInitcalls(phase, self.getEnd())
	def newActionGlobal(self, name, start, end):
		# which phase is this device callback or action "in"
		targetphase = "none"
		overlap = 0.0
		for phase in self.phases:
			pstart = self.dmesg[phase]['start']
			pend = self.dmesg[phase]['end']
			o = max(0, min(end, pend) - max(start, pstart))
			if(o > overlap):
				targetphase = phase
				overlap = o
		if targetphase in self.phases:
			self.newAction(targetphase, name, -1, '', start, end, '')
			return True
		return False
	def newAction(self, phase, name, pid, parent, start, end, drv):
		# new device callback for a specific phase
		self.html_device_id += 1
		devid = '%s%d' % (self.idstr, self.html_device_id)
		list = self.dmesg[phase]['list']
		length = -1.0
		if(start >= 0 and end >= 0):
			length = end - start
		list[name] = {'start': start, 'end': end, 'pid': pid, 'par': parent,
					  'length': length, 'row': 0, 'id': devid, 'drv': drv }
	def deviceIDs(self, devlist, phase):
		idlist = []
		list = self.dmesg[phase]['list']
		for devname in list:
			if devname in devlist:
				idlist.append(list[devname]['id'])
		return idlist
	def deviceParentID(self, devname, phase):
		pdev = ''
		pdevid = ''
		list = self.dmesg[phase]['list']
		if devname in list:
			pdev = list[devname]['par']
		if pdev in list:
			return list[pdev]['id']
		return pdev
	def deviceChildren(self, devname, phase):
		devlist = []
		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)
		return self.deviceIDs(devlist, phase)
	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)
	def masterTopology(self, name, list, depth):
		node = DeviceNode(name, depth)
		for cname in list:
			clist = self.deviceChildren(cname, 'resume')
			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']
				if(re.match('[0-9]*-[0-9]*\.[0-9]*[\.0-9]*\:[\.0-9]*$', pdev)):
					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)

# Class: TraceEvent
# Description:
#	 A container for trace event data found in the ftrace file
class TraceEvent:
	ready = False
	name = ''
	time = 0.0
	color = '#FFFFFF'
	length = 0.0
	action = ''
	def __init__(self, a, n, c, t):
		self.action = a
		self.name = n
		self.color = c
		self.time = t

# 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
class FTraceLine:
	time = 0.0
	length = 0.0
	fcall = False
	freturn = False
	fevent = False
	depth = 0
	name = ''
	type = ''
	def __init__(self, t, m, d):
		self.time = float(t)
		# 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
			self.fevent = True
			return
		# convert the duration to seconds
		if(d):
			self.length = float(d)/1000000
		# the indentation determines the depth
		match = re.match('^(?P<d> *)(?P<o>.*)$', m)
		if(not match):
			return
		self.depth = self.getDepth(match.group('d'))
		m = match.group('o')
		# function return
		if(m[0] == '}'):
			self.freturn = True
			if(len(m) > 1):
				# includes comment with function name
				match = re.match('^} *\/\* *(?P<n>.*) *\*\/$', m)
				if(match):
					self.name = match.group('n')
		# function call
		else:
			self.fcall = True
			# function call with children
			if(m[-1] == '{'):
				match = re.match('^(?P<n>.*) *\(.*', m)
				if(match):
					self.name = match.group('n')
			# function call with no children (leaf)
			elif(m[-1] == ';'):
				self.freturn = True
				match = re.match('^(?P<n>.*) *\(.*', m)
				if(match):
					self.name = match.group('n')
			# something else (possibly a trace marker)
			else:
				self.name = m
	def getDepth(self, str):
		return len(str)/2
	def debugPrint(self, dev):
		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))

# 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
class FTraceCallGraph:
	start = -1.0
	end = -1.0
	list = []
	invalid = False
	depth = 0
	def __init__(self):
		self.start = -1.0
		self.end = -1.0
		self.list = []
		self.depth = 0
	def setDepth(self, line):
		if(line.fcall and not line.freturn):
			line.depth = self.depth
			self.depth += 1
		elif(line.freturn and not line.fcall):
			self.depth -= 1
			line.depth = self.depth
		else:
			line.depth = self.depth
	def addLine(self, line, match):
		if(not self.invalid):
			self.setDepth(line)
		if(line.depth == 0 and line.freturn):
			if(self.start < 0):
				self.start = line.time
			self.end = line.time
			self.list.append(line)
			return True
		if(self.invalid):
			return False
		if(len(self.list) >= 1000000 or self.depth < 0):
			if(len(self.list) > 0):
				first = self.list[0]
				self.list = []
				self.list.append(first)
			self.invalid = True
			if(not match):
				return False
			id = 'task %s cpu %s' % (match.group('pid'), match.group('cpu'))
			window = '(%f - %f)' % (self.start, line.time)
			if(self.depth < 0):
				print('Too much data for '+id+\
					' (buffer overflow), ignoring this callback')
			else:
				print('Too much data for '+id+\
					' '+window+', ignoring this callback')
			return False
		self.list.append(line)
		if(self.start < 0):
			self.start = line.time
		return False
	def slice(self, t0, tN):
		minicg = FTraceCallGraph()
		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
			minicg.addLine(l, 0)
			if((count == 0 and l.freturn and l.fcall) or
				(count > 0 and l.depth <= 0)):
				break
			count += 1
		return minicg
	def sanityCheck(self):
		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):
				if(l.depth not in stack):
					return False
				stack[l.depth].length = l.length
				stack[l.depth] = 0
				l.length = 0
				cnt -= 1
		if(cnt == 0):
			return True
		return False
	def debugPrint(self, filename):
		if(filename == 'stdout'):
			print('[%f - %f]') % (self.start, self.end)
			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(' ')
		else:
			fp = open(filename, 'w')
			print(filename)
			for l in self.list:
				if(l.freturn and l.fcall):
					fp.write('%f (%02d): %s(); (%.3f us)\n' % (l.time, \
						l.depth, l.name, l.length*1000000))
				elif(l.freturn):
					fp.write('%f (%02d): %s} (%.3f us)\n' % (l.time, \
						l.depth, l.name, l.length*1000000))
				else:
					fp.write('%f (%02d): %s() { (%.3f us)\n' % (l.time, \
						l.depth, l.name, l.length*1000000))
			fp.close()

# Class: Timeline
# Description:
#	 A container for a suspend/resume html timeline. In older versions
#	 of the script there were multiple timelines, but in the latest
#	 there is only one.
class Timeline:
	html = {}
	scaleH = 0.0 # height of the row as a percent of the timeline height
	rowH = 0.0 # height of each row in percent of the timeline height
	row_height_pixels = 30
	maxrows = 0
	height = 0
	def __init__(self):
		self.html = {
			'timeline': '',
			'legend': '',
			'scale': ''
		}
	def setRows(self, rows):
		self.maxrows = int(rows)
		self.scaleH = 100.0/float(self.maxrows)
		self.height = self.maxrows*self.row_height_pixels
		r = float(self.maxrows - 1)
		if(r < 1.0):
			r = 1.0
		self.rowH = (100.0 - self.scaleH)/r

# 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:
	ftrace_line_fmt_fg = \
		'^ *(?P<time>[0-9\.]*) *\| *(?P<cpu>[0-9]*)\)'+\
		' *(?P<proc>.*)-(?P<pid>[0-9]*) *\|'+\
		'[ +!]*(?P<dur>[0-9\.]*) .*\|  (?P<msg>.*)'
	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
	ftemp = dict()
	ttemp = dict()
	inthepipe = False
	tracertype = ''
	data = 0
	def __init__(self, dataobj):
		self.data = dataobj
		self.ftemp = dict()
		self.ttemp = dict()
	def isReady(self):
		if(tracertype == '' or not data):
			return False
		return True
	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)

# ----------------- FUNCTIONS --------------------

# 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)

# Function: initFtrace
# Description:
#	 Configure ftrace to use trace events and/or a callgraph
def initFtrace():
	global sysvals

	tp = sysvals.tpath
	cf = 'dpm_run_callback'
	if(sysvals.usetraceeventsonly):
		cf = '-e dpm_prepare -e dpm_complete -e dpm_run_callback'
	if(sysvals.usecallgraph or sysvals.usetraceevents):
		print('INITIALIZING FTRACE...')
		# turn trace off
		os.system('echo 0 > '+tp+'tracing_on')
		# set the trace clock to global
		os.system('echo global > '+tp+'trace_clock')
		# set trace buffer to a huge value
		os.system('echo nop > '+tp+'current_tracer')
		os.system('echo 100000 > '+tp+'buffer_size_kb')
		# initialize the callgraph trace, unless this is an x2 run
		if(sysvals.usecallgraph and sysvals.execcount == 1):
			# set trace type
			os.system('echo function_graph > '+tp+'current_tracer')
			os.system('echo "" > '+tp+'set_ftrace_filter')
			# set trace format options
			os.system('echo funcgraph-abstime > '+tp+'trace_options')
			os.system('echo funcgraph-proc > '+tp+'trace_options')
			# focus only on device suspend and resume
			os.system('cat '+tp+'available_filter_functions | grep '+\
				cf+' > '+tp+'set_graph_function')
		if(sysvals.usetraceevents):
			# turn trace events on
			events = iter(sysvals.traceevents)
			for e in events:
				os.system('echo 1 > '+sysvals.epath+e+'/enable')
		# clear the trace buffer
		os.system('echo "" > '+tp+'trace')

# Function: initFtraceAndroid
# Description:
#	 Configure ftrace to capture trace events
def initFtraceAndroid():
	global sysvals

	tp = sysvals.tpath
	if(sysvals.usetraceevents):
		print('INITIALIZING FTRACE...')
		# turn trace off
		os.system(sysvals.adb+" shell 'echo 0 > "+tp+"tracing_on'")
		# set the trace clock to global
		os.system(sysvals.adb+" shell 'echo global > "+tp+"trace_clock'")
		# set trace buffer to a huge value
		os.system(sysvals.adb+" shell 'echo nop > "+tp+"current_tracer'")
		os.system(sysvals.adb+" shell 'echo 10000 > "+tp+"buffer_size_kb'")
		# turn trace events on
		events = iter(sysvals.traceevents)
		for e in events:
			os.system(sysvals.adb+" shell 'echo 1 > "+\
				sysvals.epath+e+"/enable'")
		# clear the trace buffer
		os.system(sysvals.adb+" shell 'echo \"\" > "+tp+"trace'")

# Function: verifyFtrace
# Description:
#	 Check that ftrace is working on the system
# Output:
#	 True or False
def verifyFtrace():
	global sysvals
	# 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 = sysvals.tpath
	if(sysvals.usecallgraph):
		files += [
			'available_filter_functions',
			'set_ftrace_filter',
			'set_graph_function'
		]
	for f in files:
		if(sysvals.android):
			out = os.popen(sysvals.adb+' shell ls '+tp+f).read().strip()
			if(out != tp+f):
				return False
		else:
			if(os.path.exists(tp+f) == False):
				return False
	return True

# Function: parseStamp
# Description:
#	 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
def parseStamp(m, data):
	global sysvals
	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')
	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

	sysvals.usetraceeventsonly = True
	sysvals.usetraceevents = False
	for e in sysvals.traceevents:
		out = os.popen('cat '+sysvals.ftracefile+' | grep "'+e+': "').read()
		if(not out):
			sysvals.usetraceeventsonly = False
		if(e == 'suspend_resume' and out):
			sysvals.usetraceevents = True

# 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)
	testidx = -1
	testrun = []
	for data in testruns:
		testrun.append(TestRun(data))

	# extract the callgraph and traceevent data
	vprint('Analyzing the ftrace data...')
	tf = open(sysvals.ftracefile, 'r')
	for line in tf:
		# remove any latent carriage returns
		line = line.replace('\r\n', '')
		# grab the time stamp first (signifies the start of the test run)
		m = re.match(sysvals.stampfmt, line)
		if(m):
			testidx += 1
			parseStamp(m, testrun[testidx].data)
			continue
		# pull out any firmware data
		if(re.match(sysvals.firmwarefmt, line)):
			continue
		# if we havent found a test time stamp yet keep spinning til we do
		if(testidx < 0):
			continue
		# determine the trace data type (required for further parsing)
		m = re.match(sysvals.tracertypefmt, line)
		if(m):
			tracer = m.group('t')
			testrun[testidx].setTracerType(tracer)
			continue
		# parse only valid lines, if this isnt one move on
		m = re.match(testrun[testidx].ftrace_line_fmt, line)
		if(not m):
			continue
		# gather the basic message data from the line
		m_time = m.group('time')
		m_pid = m.group('pid')
		m_msg = m.group('msg')
		if(testrun[testidx].cgformat):
			m_param3 = m.group('dur')
		else:
			m_param3 = 'traceevent'
		if(m_time and m_pid and m_msg):
			t = FTraceLine(m_time, m_msg, m_param3)
			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
		# only parse the ftrace data during suspend/resume
		data = testrun[testidx].data
		if(not testrun[testidx].inthepipe):
			# look for the suspend start marker
			if(t.fevent):
				if(t.name == 'SUSPEND START'):
					testrun[testidx].inthepipe = True
					data.setStart(t.time)
				continue
		else:
			# trace event processing
			if(t.fevent):
				if(t.name == 'RESUME COMPLETE'):
					testrun[testidx].inthepipe = False
					data.setEnd(t.time)
					if(testidx == testcnt - 1):
						break
					continue
				# general trace events have two types, begin and end
				if(re.match('(?P<name>.*) begin$', t.name)):
					isbegin = True
				elif(re.match('(?P<name>.*) end$', t.name)):
					isbegin = False
				else:
					continue
				m = re.match('(?P<name>.*)\[(?P<val>[0-9]*)\] .*', t.name)
				if(m):
					val = m.group('val')
					if val == '0':
						name = m.group('name')
					else:
						name = m.group('name')+'['+val+']'
				else:
					m = re.match('(?P<name>.*) .*', t.name)
					name = m.group('name')
				# special processing for trace events
				if re.match('dpm_prepare\[.*', name):
					continue
				elif re.match('machine_suspend.*', name):
					continue
				elif re.match('suspend_enter\[.*', name):
					if(not isbegin):
						data.dmesg['suspend_prepare']['end'] = t.time
					continue
				elif re.match('dpm_suspend\[.*', name):
					if(not isbegin):
						data.dmesg['suspend']['end'] = t.time
					continue
				elif re.match('dpm_suspend_late\[.*', name):
					if(isbegin):
						data.dmesg['suspend_late']['start'] = t.time
					else:
						data.dmesg['suspend_late']['end'] = t.time
					continue
				elif re.match('dpm_suspend_noirq\[.*', name):
					if(isbegin):
						data.dmesg['suspend_noirq']['start'] = t.time
					else:
						data.dmesg['suspend_noirq']['end'] = t.time
					continue
				elif re.match('dpm_resume_noirq\[.*', name):
					if(isbegin):
						data.dmesg['resume_machine']['end'] = t.time
						data.dmesg['resume_noirq']['start'] = t.time
					else:
						data.dmesg['resume_noirq']['end'] = t.time
					continue
				elif re.match('dpm_resume_early\[.*', name):
					if(isbegin):
						data.dmesg['resume_early']['start'] = t.time
					else:
						data.dmesg['resume_early']['end'] = t.time
					continue
				elif re.match('dpm_resume\[.*', name):
					if(isbegin):
						data.dmesg['resume']['start'] = t.time
					else:
						data.dmesg['resume']['end'] = t.time
					continue
				elif re.match('dpm_complete\[.*', name):
					if(isbegin):
						data.dmesg['resume_complete']['start'] = t.time
					else:
						data.dmesg['resume_complete']['end'] = t.time
					continue
				# is this trace event outside of the devices calls
				if(data.isTraceEventOutsideDeviceCalls(pid, t.time)):
					# global events (outside device calls) are simply graphed
					if(isbegin):
						# store each trace event in ttemp
						if(name not in testrun[testidx].ttemp):
							testrun[testidx].ttemp[name] = []
						testrun[testidx].ttemp[name].append(\
							{'begin': t.time, 'end': t.time})
					else:
						# finish off matching trace event in ttemp
						if(name in testrun[testidx].ttemp):
							testrun[testidx].ttemp[name][-1]['end'] = t.time
				else:
					if(isbegin):
						data.addIntraDevTraceEvent('', name, pid, t.time)
					else:
						data.capIntraDevTraceEvent('', name, pid, t.time)
			# call/return processing
			elif sysvals.usecallgraph:
				# create a callgraph object for the data
				if(pid not in testrun[testidx].ftemp):
					testrun[testidx].ftemp[pid] = []
					testrun[testidx].ftemp[pid].append(FTraceCallGraph())
				# when the call is finished, see which device matches it
				cg = testrun[testidx].ftemp[pid][-1]
				if(cg.addLine(t, m)):
					testrun[testidx].ftemp[pid].append(FTraceCallGraph())
	tf.close()

	for test in testrun:
		# add the traceevent data to the device hierarchy
		if(sysvals.usetraceevents):
			for name in test.ttemp:
				for event in test.ttemp[name]:
					begin = event['begin']
					end = event['end']
					# if event starts before timeline start, expand timeline
					if(begin < test.data.start):
						test.data.setStart(begin)
					# if event ends after timeline end, expand the timeline
					if(end > test.data.end):
						test.data.setEnd(end)
					test.data.newActionGlobal(name, begin, end)

		# add the callgraph data to the device hierarchy
		for pid in test.ftemp:
			for cg in test.ftemp[pid]:
				if(not cg.sanityCheck()):
					id = 'task %s cpu %s' % (pid, m.group('cpu'))
					vprint('Sanity check failed for '+\
						id+', ignoring this callback')
					continue
				callstart = cg.start
				callend = cg.end
				for p in test.data.phases:
					if(test.data.dmesg[p]['start'] <= callstart and
						callstart <= test.data.dmesg[p]['end']):
						list = test.data.dmesg[p]['list']
						for devname in list:
							dev = list[devname]
							if(pid == dev['pid'] and
								callstart <= dev['start'] and
								callend >= dev['end']):
								dev['ftrace'] = cg
						break

		if(sysvals.verbose):
			test.data.printDetails()


	# add the time in between the tests as a new phase so we can see it
	if(len(testruns) > 1):
		t1e = testruns[0].getEnd()
		t2s = testruns[-1].getStart()
		testruns[-1].newPhaseWithSingleAction('user mode', \
			'user mode', t1e, t2s, '#FF9966')

# Function: parseTraceLog
# Description:
#	 Analyze an ftrace log output file generated from this app during
#	 the execution phase. Used when the ftrace log is the primary data source
#	 and includes the suspend_resume and device_pm_callback trace events
#	 The ftrace filename is taken from sysvals
# Output:
#	 An array of Data objects
def parseTraceLog():
	global sysvals

	vprint('Analyzing the ftrace data...')
	if(os.path.exists(sysvals.ftracefile) == False):
		doError('%s doesnt exist' % sysvals.ftracefile, False)

	# extract the callgraph and traceevent data
	testruns = []
	testdata = []
	testrun = 0
	data = 0
	tf = open(sysvals.ftracefile, 'r')
	phase = 'suspend_prepare'
	for line in tf:
		# remove any latent carriage returns
		line = line.replace('\r\n', '')
		# stamp line: each stamp means a new test run
		m = re.match(sysvals.stampfmt, line)
		if(m):
			data = Data(len(testdata))
			testdata.append(data)
			testrun = TestRun(data)
			testruns.append(testrun)
			parseStamp(m, data)
			continue
		if(not data):
			continue
		# firmware line: pull out any firmware data
		m = re.match(sysvals.firmwarefmt, line)
		if(m):
			data.fwSuspend = int(m.group('s'))
			data.fwResume = int(m.group('r'))
			if(data.fwSuspend > 0 or data.fwResume > 0):
				data.fwValid = True
			continue
		# tracer type line: determine the trace data type
		m = re.match(sysvals.tracertypefmt, line)
		if(m):
			tracer = m.group('t')
			testrun.setTracerType(tracer)
			continue
		# post resume time line: did this test run include post-resume data
		m = re.match(sysvals.postresumefmt, line)
		if(m):
			t = int(m.group('t'))
			if(t > 0):
				sysvals.postresumetime = t
			continue
		# ftrace line: parse only valid lines
		m = re.match(testrun.ftrace_line_fmt, line)
		if(not m):
			continue
		# gather the basic message data from the line
		m_time = m.group('time')
		m_pid = m.group('pid')
		m_msg = m.group('msg')
		if(testrun.cgformat):
			m_param3 = m.group('dur')
		else:
			m_param3 = 'traceevent'
		if(m_time and m_pid and m_msg):
			t = FTraceLine(m_time, m_msg, m_param3)
			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
		# only parse the ftrace data during suspend/resume
		if(not testrun.inthepipe):
			# look for the suspend start marker
			if(t.fevent):
				if(t.name == 'SUSPEND START'):
					testrun.inthepipe = True
					data.setStart(t.time)
			continue
		# trace event processing
		if(t.fevent):
			if(t.name == 'RESUME COMPLETE'):
				if(sysvals.postresumetime > 0):
					phase = 'post_resume'
					data.newPhase(phase, t.time, t.time, '#FF9966', -1)
				else:
					testrun.inthepipe = False
				data.setEnd(t.time)
				continue
			if(phase == 'post_resume'):
				data.setEnd(t.time)
			if(t.type == 'suspend_resume'):
				# suspend_resume trace events have two types, begin and end
				if(re.match('(?P<name>.*) begin$', t.name)):
					isbegin = True
				elif(re.match('(?P<name>.*) end$', t.name)):
					isbegin = False
				else:
					continue
				m = re.match('(?P<name>.*)\[(?P<val>[0-9]*)\] .*', t.name)
				if(m):
					val = m.group('val')
					if val == '0':
						name = m.group('name')
					else:
						name = m.group('name')+'['+val+']'
				else:
					m = re.match('(?P<name>.*) .*', t.name)
					name = m.group('name')
				# ignore these events
				if(re.match('acpi_suspend\[.*', t.name) or
					re.match('suspend_enter\[.*', name)):
					continue
				# -- phase changes --
				# suspend_prepare start
				if(re.match('dpm_prepare\[.*', t.name)):
					phase = 'suspend_prepare'
					if(not isbegin):
						data.dmesg[phase]['end'] = t.time
					continue
				# suspend start
				elif(re.match('dpm_suspend\[.*', t.name)):
					phase = 'suspend'
					data.setPhase(phase, t.time, isbegin)
					continue
				# suspend_late start
				elif(re.match('dpm_suspend_late\[.*', t.name)):
					phase = 'suspend_late'
					data.setPhase(phase, t.time, isbegin)
					continue
				# suspend_noirq start
				elif(re.match('dpm_suspend_noirq\[.*', t.name)):
					phase = 'suspend_noirq'
					data.setPhase(phase, t.time, isbegin)
					if(not isbegin):
						phase = 'suspend_machine'
						data.dmesg[phase]['start'] = t.time
					continue
				# suspend_machine/resume_machine
				elif(re.match('machine_suspend\[.*', t.name)):
					if(isbegin):
						phase = 'suspend_machine'
						data.dmesg[phase]['end'] = t.time
						data.tSuspended = t.time
					else:
						if(sysvals.suspendmode in ['mem', 'disk']):
							data.dmesg['suspend_machine']['end'] = t.time
							data.tSuspended = t.time
						phase = 'resume_machine'
						data.dmesg[phase]['start'] = t.time
						data.tResumed = t.time
						data.tLow = data.tResumed - data.tSuspended
					continue
				# resume_noirq start
				elif(re.match('dpm_resume_noirq\[.*', t.name)):
					phase = 'resume_noirq'
					data.setPhase(phase, t.time, isbegin)
					if(isbegin):
						data.dmesg['resume_machine']['end'] = t.time
					continue
				# resume_early start
				elif(re.match('dpm_resume_early\[.*', t.name)):
					phase = 'resume_early'
					data.setPhase(phase, t.time, isbegin)
					continue
				# resume start
				elif(re.match('dpm_resume\[.*', t.name)):
					phase = 'resume'
					data.setPhase(phase, t.time, isbegin)
					continue
				# resume complete start
				elif(re.match('dpm_complete\[.*', t.name)):
					phase = 'resume_complete'
					if(isbegin):
						data.dmesg[phase]['start'] = t.time
					continue

				# is this trace event outside of the devices calls
				if(data.isTraceEventOutsideDeviceCalls(pid, t.time)):
					# global events (outside device calls) are simply graphed
					if(name not in testrun.ttemp):
						testrun.ttemp[name] = []
					if(isbegin):
						# create a new list entry
						testrun.ttemp[name].append(\
							{'begin': t.time, 'end': t.time})
					else:
						if(len(testrun.ttemp[name]) > 0):
							# if an antry exists, assume this is its end
							testrun.ttemp[name][-1]['end'] = t.time
						elif(phase == 'post_resume'):
							# post resume events can just have ends
							testrun.ttemp[name].append({
								'begin': data.dmesg[phase]['start'],
								'end': t.time})
				else:
					if(isbegin):
						data.addIntraDevTraceEvent('', name, pid, t.time)
					else:
						data.capIntraDevTraceEvent('', name, pid, t.time)
			# device callback start
			elif(t.type == 'device_pm_callback_start'):
				m = re.match('(?P<drv>.*) (?P<d>.*), parent: *(?P<p>.*), .*',\
					t.name);
				if(not m):
					continue
				drv = m.group('drv')
				n = m.group('d')
				p = m.group('p')
				if(n and p):
					data.newAction(phase, n, pid, p, t.time, -1, drv)
			# device callback finish
			elif(t.type == 'device_pm_callback_end'):
				m = re.match('(?P<drv>.*) (?P<d>.*), err.*', t.name);
				if(not m):
					continue
				n = m.group('d')
				list = data.dmesg[phase]['list']
				if(n in list):
					dev = list[n]
					dev['length'] = t.time - dev['start']
					dev['end'] = t.time
		# callgraph processing
		elif sysvals.usecallgraph:
			# this shouldn't happen, but JIC, ignore callgraph data post-res
			if(phase == 'post_resume'):
				continue
			# create a callgraph object for the data
			if(pid not in testrun.ftemp):
				testrun.ftemp[pid] = []
				testrun.ftemp[pid].append(FTraceCallGraph())
			# when the call is finished, see which device matches it
			cg = testrun.ftemp[pid][-1]
			if(cg.addLine(t, m)):
				testrun.ftemp[pid].append(FTraceCallGraph())
	tf.close()

	for test in testruns:
		# add the traceevent data to the device hierarchy
		if(sysvals.usetraceevents):
			for name in test.ttemp:
				for event in test.ttemp[name]:
					begin = event['begin']
					end = event['end']
					# if event starts before timeline start, expand timeline
					if(begin < test.data.start):
						test.data.setStart(begin)
					# if event ends after timeline end, expand the timeline
					if(end > test.data.end):
						test.data.setEnd(end)
					test.data.newActionGlobal(name, begin, end)

		# add the callgraph data to the device hierarchy
		borderphase = {
			'dpm_prepare': 'suspend_prepare',
			'dpm_complete': 'resume_complete'
		}
		for pid in test.ftemp:
			for cg in test.ftemp[pid]:
				if len(cg.list) < 2:
					continue
				if(not cg.sanityCheck()):
					id = 'task %s cpu %s' % (pid, m.group('cpu'))
					vprint('Sanity check failed for '+\
						id+', ignoring this callback')
					continue
				callstart = cg.start
				callend = cg.end
				if(cg.list[0].name in borderphase):
					p = borderphase[cg.list[0].name]
					list = test.data.dmesg[p]['list']
					for devname in list:
						dev = list[devname]
						if(pid == dev['pid'] and
							callstart <= dev['start'] and
							callend >= dev['end']):
							dev['ftrace'] = cg.slice(dev['start'], dev['end'])
					continue
				if(cg.list[0].name != 'dpm_run_callback'):
					continue
				for p in test.data.phases:
					if(test.data.dmesg[p]['start'] <= callstart and
						callstart <= test.data.dmesg[p]['end']):
						list = test.data.dmesg[p]['list']
						for devname in list:
							dev = list[devname]
							if(pid == dev['pid'] and
								callstart <= dev['start'] and
								callend >= dev['end']):
								dev['ftrace'] = cg
						break

	# fill in any missing phases
	for data in testdata:
		lp = data.phases[0]
		for p in data.phases:
			if(data.dmesg[p]['start'] < 0 and data.dmesg[p]['end'] < 0):
				print('WARNING: phase "%s" is missing!' % p)
			if(data.dmesg[p]['start'] < 0):
				data.dmesg[p]['start'] = data.dmesg[lp]['end']
				if(p == 'resume_machine'):
					data.tSuspended = data.dmesg[lp]['end']
					data.tResumed = data.dmesg[lp]['end']
					data.tLow = 0
			if(data.dmesg[p]['end'] < 0):
				data.dmesg[p]['end'] = data.dmesg[p]['start']
			lp = p

		if(len(sysvals.devicefilter) > 0):
			data.deviceFilter(sysvals.devicefilter)
		data.fixupInitcallsThatDidntReturn()
		if(sysvals.verbose):
			data.printDetails()

	# add the time in between the tests as a new phase so we can see it
	if(len(testdata) > 1):
		t1e = testdata[0].getEnd()
		t2s = testdata[-1].getStart()
		testdata[-1].newPhaseWithSingleAction('user mode', \
			'user mode', t1e, t2s, '#FF9966')
	return testdata

# Function: loadKernelLog
# Description:
#	 [deprecated for kernel 3.15.0 or newer]
#	 load the dmesg file into memory and fix up any ordering issues
#	 The dmesg filename is taken from sysvals
# Output:
#	 An array of empty Data objects with only their dmesgtext attributes set
def loadKernelLog():
	global sysvals

	vprint('Analyzing the dmesg data...')
	if(os.path.exists(sysvals.dmesgfile) == False):
		doError('%s doesnt exist' % sysvals.dmesgfile, False)

	# there can be multiple test runs in a single file delineated by stamps
	testruns = []
	data = 0
	lf = open(sysvals.dmesgfile, 'r')
	for line in lf:
		line = line.replace('\r\n', '')
		idx = line.find('[')
		if idx > 1:
			line = line[idx:]
		m = re.match(sysvals.stampfmt, line)
		if(m):
			if(data):
				testruns.append(data)
			data = Data(len(testruns))
			parseStamp(m, data)
			continue
		if(not data):
			continue
		m = re.match(sysvals.firmwarefmt, line)
		if(m):
			data.fwSuspend = int(m.group('s'))
			data.fwResume = int(m.group('r'))
			if(data.fwSuspend > 0 or data.fwResume > 0):
				data.fwValid = True
			continue
		m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
		if(m):
			data.dmesgtext.append(line)
			if(re.match('ACPI: resume from mwait', m.group('msg'))):
				print('NOTE: This suspend appears to be freeze rather than'+\
					' %s, it will be treated as such' % sysvals.suspendmode)
				sysvals.suspendmode = 'freeze'
		else:
			vprint('ignoring dmesg line: %s' % line.replace('\n', ''))
	testruns.append(data)
	lf.close()

	if(not data):
		print('ERROR: analyze_suspend header missing from dmesg log')
		sys.exit()

	# fix lines with same timestamp/function with the call and return swapped
	for data in testruns:
		last = ''
		for line in data.dmesgtext:
			mc = re.match('.*(\[ *)(?P<t>[0-9\.]*)(\]) calling  '+\
				'(?P<f>.*)\+ @ .*, parent: .*', line)
			mr = re.match('.*(\[ *)(?P<t>[0-9\.]*)(\]) call '+\
				'(?P<f>.*)\+ returned .* after (?P<dt>.*) usecs', last)
			if(mc and mr and (mc.group('t') == mr.group('t')) and
				(mc.group('f') == mr.group('f'))):
				i = data.dmesgtext.index(last)
				j = data.dmesgtext.index(line)
				data.dmesgtext[i] = line
				data.dmesgtext[j] = last
			last = line
	return testruns

# Function: parseKernelLog
# Description:
#	 [deprecated for kernel 3.15.0 or newer]
#	 Analyse a dmesg log output file generated from this app during
#	 the execution phase. Create a set of device structures in memory
#	 for subsequent formatting in the html output file
#	 This call is only for legacy support on kernels where the ftrace
#	 data lacks the suspend_resume or device_pm_callbacks trace events.
# Arguments:
#	 data: an empty Data object (with dmesgtext) obtained from loadKernelLog
# Output:
#	 The filled Data object
def parseKernelLog(data):
	global sysvals

	phase = 'suspend_runtime'

	if(data.fwValid):
		vprint('Firmware Suspend = %u ns, Firmware Resume = %u ns' % \
			(data.fwSuspend, data.fwResume))

	# dmesg phase match table
	dm = {
		'suspend_prepare': 'PM: Syncing filesystems.*',
		        'suspend': 'PM: Entering [a-z]* sleep.*',
		   'suspend_late': 'PM: suspend of devices complete after.*',
		  'suspend_noirq': 'PM: late suspend of devices complete after.*',
		'suspend_machine': 'PM: noirq suspend of devices complete after.*',
		 'resume_machine': 'ACPI: Low-level resume complete.*',
		   'resume_noirq': 'ACPI: Waking up from system sleep state.*',
		   'resume_early': 'PM: noirq resume of devices complete after.*',
		         'resume': 'PM: early resume of devices complete after.*',
		'resume_complete': 'PM: resume of devices complete after.*',
		    'post_resume': '.*Restarting tasks \.\.\..*',
	}
	if(sysvals.suspendmode == 'standby'):
		dm['resume_machine'] = 'PM: Restoring platform NVS memory'
	elif(sysvals.suspendmode == 'disk'):
		dm['suspend_late'] = 'PM: freeze of devices complete after.*'
		dm['suspend_noirq'] = 'PM: late freeze of devices complete after.*'
		dm['suspend_machine'] = 'PM: noirq freeze of devices complete after.*'
		dm['resume_machine'] = 'PM: Restoring platform NVS memory'
		dm['resume_early'] = 'PM: noirq restore of devices complete after.*'
		dm['resume'] = 'PM: early restore of devices complete after.*'
		dm['resume_complete'] = 'PM: restore of devices complete after.*'
	elif(sysvals.suspendmode == 'freeze'):
		dm['resume_machine'] = 'ACPI: resume from mwait'

	# action table (expected events that occur and show up in dmesg)
	at = {
		'sync_filesystems': {
			'smsg': 'PM: Syncing filesystems.*',
			'emsg': 'PM: Preparing system for mem sleep.*' },
		'freeze_user_processes': {
			'smsg': 'Freezing user space processes .*',
			'emsg': 'Freezing remaining freezable tasks.*' },
		'freeze_tasks': {
			'smsg': 'Freezing remaining freezable tasks.*',
			'emsg': 'PM: Entering (?P<mode>[a-z,A-Z]*) sleep.*' },
		'ACPI prepare': {
			'smsg': 'ACPI: Preparing to enter system sleep state.*',
			'emsg': 'PM: Saving platform NVS memory.*' },
		'PM vns': {
			'smsg': 'PM: Saving platform NVS memory.*',
			'emsg': 'Disabling non-boot CPUs .*' },
	}

	t0 = -1.0
	cpu_start = -1.0
	prevktime = -1.0
	actions = dict()
	for line in data.dmesgtext:
		# -- preprocessing --
		# parse each dmesg line into the time and message
		m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
		if(m):
			val = m.group('ktime')
			try:
				ktime = float(val)
			except:
				doWarning('INVALID DMESG LINE: '+\
					line.replace('\n', ''), 'dmesg')
				continue
			msg = m.group('msg')
			# initialize data start to first line time
			if t0 < 0:
				data.setStart(ktime)
				t0 = ktime
		else:
			continue

		# hack for determining resume_machine end for freeze
		if(not sysvals.usetraceevents and sysvals.suspendmode == 'freeze' \
			and phase == 'resume_machine' and \
			re.match('calling  (?P<f>.*)\+ @ .*, parent: .*', msg)):
			data.dmesg['resume_machine']['end'] = ktime
			phase = 'resume_noirq'
			data.dmesg[phase]['start'] = ktime

		# -- phase changes --
		# suspend start
		if(re.match(dm['suspend_prepare'], msg)):
			phase = 'suspend_prepare'
			data.dmesg[phase]['start'] = ktime
			data.setStart(ktime)
		# suspend start
		elif(re.match(dm['suspend'], msg)):
			data.dmesg['suspend_prepare']['end'] = ktime
			phase = 'suspend'
			data.dmesg[phase]['start'] = ktime
		# suspend_late start
		elif(re.match(dm['suspend_late'], msg)):
			data.dmesg['suspend']['end'] = ktime
			phase = 'suspend_late'
			data.dmesg[phase]['start'] = ktime
		# suspend_noirq start
		elif(re.match(dm['suspend_noirq'], msg)):
			data.dmesg['suspend_late']['end'] = ktime
			phase = 'suspend_noirq'
			data.dmesg[phase]['start'] = ktime
		# suspend_machine start
		elif(re.match(dm['suspend_machine'], msg)):
			data.dmesg['suspend_noirq']['end'] = ktime
			phase = 'suspend_machine'
			data.dmesg[phase]['start'] = ktime
		# resume_machine start
		elif(re.match(dm['resume_machine'], msg)):
			if(sysvals.suspendmode in ['freeze', 'standby']):
				data.tSuspended = prevktime
				data.dmesg['suspend_machine']['end'] = prevktime
			else:
				data.tSuspended = ktime
				data.dmesg['suspend_machine']['end'] = ktime
			phase = 'resume_machine'
			data.tResumed = ktime
			data.tLow = data.tResumed - data.tSuspended
			data.dmesg[phase]['start'] = ktime
		# resume_noirq start
		elif(re.match(dm['resume_noirq'], msg)):
			data.dmesg['resume_machine']['end'] = ktime
			phase = 'resume_noirq'
			data.dmesg[phase]['start'] = ktime
		# resume_early start
		elif(re.match(dm['resume_early'], msg)):
			data.dmesg['resume_noirq']['end'] = ktime
			phase = 'resume_early'
			data.dmesg[phase]['start'] = ktime
		# resume start
		elif(re.match(dm['resume'], msg)):
			data.dmesg['resume_early']['end'] = ktime
			phase = 'resume'
			data.dmesg[phase]['start'] = ktime
		# resume complete start
		elif(re.match(dm['resume_complete'], msg)):
			data.dmesg['resume']['end'] = ktime
			phase = 'resume_complete'
			data.dmesg[phase]['start'] = ktime
		# post resume start
		elif(re.match(dm['post_resume'], msg)):
			data.dmesg['resume_complete']['end'] = ktime
			data.setEnd(ktime)
			phase = 'post_resume'
			break

		# -- device callbacks --
		if(phase in data.phases):
			# device init call
			if(re.match('calling  (?P<f>.*)\+ @ .*, parent: .*', msg)):
				sm = re.match('calling  (?P<f>.*)\+ @ '+\
					'(?P<n>.*), parent: (?P<p>.*)', msg);
				f = sm.group('f')
				n = sm.group('n')
				p = sm.group('p')
				if(f and n and p):
					data.newAction(phase, f, int(n), p, ktime, -1, '')
			# device init return
			elif(re.match('call (?P<f>.*)\+ returned .* after '+\
				'(?P<t>.*) usecs', msg)):
				sm = re.match('call (?P<f>.*)\+ returned .* after '+\
					'(?P<t>.*) usecs(?P<a>.*)', msg);
				f = sm.group('f')
				t = sm.group('t')
				list = data.dmesg[phase]['list']
				if(f in list):
					dev = list[f]
					dev['length'] = int(t)
					dev['end'] = ktime

		# -- non-devicecallback actions --
		# if trace events are not available, these are better than nothing
		if(not sysvals.usetraceevents):
			# look for known actions
			for a in at:
				if(re.match(at[a]['smsg'], msg)):
					if(a not in actions):
						actions[a] = []
					actions[a].append({'begin': ktime, 'end': ktime})
				if(re.match(at[a]['emsg'], msg)):
					actions[a][-1]['end'] = ktime
			# now look for CPU on/off events
			if(re.match('Disabling non-boot CPUs .*', msg)):
				# start of first cpu suspend
				cpu_start = ktime
			elif(re.match('Enabling non-boot CPUs .*', msg)):
				# start of first cpu resume
				cpu_start = ktime
			elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)):
				# end of a cpu suspend, start of the next
				m = re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)
				cpu = 'CPU'+m.group('cpu')
				if(cpu not in actions):
					actions[cpu] = []
				actions[cpu].append({'begin': cpu_start, 'end': ktime})
				cpu_start = ktime
			elif(re.match('CPU(?P<cpu>[0-9]*) is up', msg)):
				# end of a cpu resume, start of the next
				m = re.match('CPU(?P<cpu>[0-9]*) is up', msg)
				cpu = 'CPU'+m.group('cpu')
				if(cpu not in actions):
					actions[cpu] = []
				actions[cpu].append({'begin': cpu_start, 'end': ktime})
				cpu_start = ktime
		prevktime = ktime

	# fill in any missing phases
	lp = data.phases[0]
	for p in data.phases:
		if(data.dmesg[p]['start'] < 0 and data.dmesg[p]['end'] < 0):
			print('WARNING: phase "%s" is missing, something went wrong!' % p)
			print('    In %s, this dmesg line denotes the start of %s:' % \
				(sysvals.suspendmode, p))
			print('        "%s"' % dm[p])
		if(data.dmesg[p]['start'] < 0):
			data.dmesg[p]['start'] = data.dmesg[lp]['end']
			if(p == 'resume_machine'):
				data.tSuspended = data.dmesg[lp]['end']
				data.tResumed = data.dmesg[lp]['end']
				data.tLow = 0
		if(data.dmesg[p]['end'] < 0):
			data.dmesg[p]['end'] = data.dmesg[p]['start']
		lp = p

	# fill in any actions we've found
	for name in actions:
		for event in actions[name]:
			begin = event['begin']
			end = event['end']
			# if event starts before timeline start, expand timeline
			if(begin < data.start):
				data.setStart(begin)
			# if event ends after timeline end, expand the timeline
			if(end > data.end):
				data.setEnd(end)
			data.newActionGlobal(name, begin, end)

	if(sysvals.verbose):
		data.printDetails()
	if(len(sysvals.devicefilter) > 0):
		data.deviceFilter(sysvals.devicefilter)
	data.fixupInitcallsThatDidntReturn()
	return True

# Function: setTimelineRows
# 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
#	 sortedkeys: cronologically sorted key list to use
# Output:
#	 The total number of rows needed to display this phase of the timeline
def setTimelineRows(list, sortedkeys):

	# clear all rows and set them to undefined
	remaining = len(list)
	rowdata = dict()
	row = 0
	for item in list:
		list[item]['row'] = -1

	# try to pack each row with as many ranges as possible
	while(remaining > 0):
		if(row not in rowdata):
			rowdata[row] = []
		for item in sortedkeys:
			if(list[item]['row'] < 0):
				s = list[item]['start']
				e = list[item]['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(list[item])
					list[item]['row'] = row
					remaining -= 1
		row += 1
	return row

# Function: createTimeScale
# Description:
#	 Create the timescale header for the html timeline
# Arguments:
#	 t0: start time (suspend begin)
#	 tMax: end time (resume end)
#	 tSuspend: time when suspend occurs, i.e. the zero time
# Output:
#	 The html code needed to display the time scale
def createTimeScale(t0, tMax, tSuspended):
	timescale = '<div class="t" style="right:{0}%">{1}</div>\n'
	output = '<div id="timescale">\n'

	# set scale for timeline
	tTotal = tMax - t0
	tS = 0.1
	if(tTotal <= 0):
		return output
	if(tTotal > 4):
		tS = 1
	if(tSuspended < 0):
		for i in range(int(tTotal/tS)+1):
			pos = '%0.3f' % (100 - ((float(i)*tS*100)/tTotal))
			if(i > 0):
				val = '%0.fms' % (float(i)*tS*1000)
			else:
				val = ''
			output += timescale.format(pos, val)
	else:
		tSuspend = tSuspended - t0
		divTotal = int(tTotal/tS) + 1
		divSuspend = int(tSuspend/tS)
		s0 = (tSuspend - tS*divSuspend)*100/tTotal
		for i in range(divTotal):
			pos = '%0.3f' % (100 - ((float(i)*tS*100)/tTotal) - s0)
			if((i == 0) and (s0 < 3)):
				val = ''
			elif(i == divSuspend):
				val = 'S/R'
			else:
				val = '%0.fms' % (float(i-divSuspend)*tS*1000)
			output += timescale.format(pos, val)
	output += '</div>\n'
	return output

# Function: createHTMLSummarySimple
# Description:
#	 Create summary html file for a series of tests
# Arguments:
#	 testruns: array of Data objects from parseTraceLog
def createHTMLSummarySimple(testruns, htmlfile):
	global sysvals

	# print out the basic summary of all the tests
	hf = open(htmlfile, 'w')

	# write the html header first (html head, css code, up to body start)
	html = '<!DOCTYPE html>\n<html>\n<head>\n\
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">\n\
	<title>AnalyzeSuspend Summary</title>\n\
	<style type=\'text/css\'>\n\
		body {overflow-y: scroll;}\n\
		.stamp {width: 100%;text-align:center;background-color:#495E09;line-height:30px;color:white;font: 25px Arial;}\n\
		table {width:100%;border-collapse: collapse;}\n\
		.summary {font: 22px Arial;border:1px solid;}\n\
		th {border: 1px solid black;background-color:#A7C942;color:white;}\n\
		td {text-align: center;}\n\
		tr.alt td {background-color:#EAF2D3;}\n\
		tr.avg td {background-color:#BDE34C;}\n\
		a:link {color: #90B521;}\n\
		a:visited {color: #495E09;}\n\
		a:hover {color: #B1DF28;}\n\
		a:active {color: #FFFFFF;}\n\
	</style>\n</head>\n<body>\n'

	# group test header
	count = len(testruns)
	headline_stamp = '<div class="stamp">{0} {1} {2} {3} ({4} tests)</div>\n'
	html += headline_stamp.format(sysvals.stamp['host'],
		sysvals.stamp['kernel'], sysvals.stamp['mode'],
		sysvals.stamp['time'], count)

	# check to see if all the tests have the same value
	stampcolumns = False
	for data in testruns:
		if diffStamp(sysvals.stamp, data.stamp):
			stampcolumns = True
			break

	th = '\t<th>{0}</th>\n'
	td = '\t<td>{0}</td>\n'
	tdlink = '\t<td><a href="{0}">Click Here</a></td>\n'

	# table header
	html += '<table class="summary">\n<tr>\n'
	html += th.format("Test #")
	if stampcolumns:
		html += th.format("Hostname")
		html += th.format("Kernel Version")
		html += th.format("Suspend Mode")
	html += th.format("Test Time")
	html += th.format("Suspend Time")
	html += th.format("Resume Time")
	html += th.format("Detail")
	html += '</tr>\n'

	# test data, 1 row per test
	sTimeAvg = 0.0
	rTimeAvg = 0.0
	num = 1
	for data in testruns:
		# data.end is the end of post_resume
		resumeEnd = data.dmesg['resume_complete']['end']
		if num % 2 == 1:
			html += '<tr class="alt">\n'
		else:
			html += '<tr>\n'

		# test num
		html += td.format("test %d" % num)
		num += 1
		if stampcolumns:
			# host name
			val = "unknown"
			if('host' in data.stamp):
				val = data.stamp['host']
			html += td.format(val)
			# host kernel
			val = "unknown"
			if('kernel' in data.stamp):
				val = data.stamp['kernel']
			html += td.format(val)
			# suspend mode
			val = "unknown"
			if('mode' in data.stamp):
				val = data.stamp['mode']
			html += td.format(val)
		# test time
		val = "unknown"
		if('time' in data.stamp):
			val = data.stamp['time']
		html += td.format(val)
		# suspend time
		sTime = (data.tSuspended - data.start)*1000
		sTimeAvg += sTime
		html += td.format("%3.3f ms" % sTime)
		# resume time
		rTime = (resumeEnd - data.tResumed)*1000
		rTimeAvg += rTime
		html += td.format("%3.3f ms" % rTime)
		# link to the output html
		html += tdlink.format(data.outfile)

		html += '</tr>\n'

	# last line: test average
	if(count > 0):
		sTimeAvg /= count
		rTimeAvg /= count
	html += '<tr class="avg">\n'
	html += td.format('Average') 	# name
	if stampcolumns:
		html += td.format('')			# host
		html += td.format('')			# kernel
		html += td.format('')			# mode
	html += td.format('')			# time
	html += td.format("%3.3f ms" % sTimeAvg)	# suspend time
	html += td.format("%3.3f ms" % rTimeAvg)	# resume time
	html += td.format('')			# output link
	html += '</tr>\n'

	# flush the data to file
	hf.write(html+'</table>\n')
	hf.write('</body>\n</html>\n')
	hf.close()

# Function: createHTML
# Description:
#	 Create the output html file from the resident test data
# Arguments:
#	 testruns: array of Data objects from parseKernelLog or parseTraceLog
# Output:
#	 True if the html file was created, false if it failed
def createHTML(testruns):
	global sysvals

	for data in testruns:
		data.normalizeTime(testruns[-1].tSuspended)

	x2changes = ['', 'absolute']
	if len(testruns) > 1:
		x2changes = ['1', 'relative']
	# html function templates
	headline_stamp = '<div class="stamp">{0} {1} {2} {3}</div>\n'
	html_devlist1 = '<button id="devlist1" class="devlist" style="float:left;">Device Detail%s</button>' % x2changes[0]
	html_zoombox = '<center><button id="zoomin">ZOOM IN</button><button id="zoomout">ZOOM OUT</button><button id="zoomdef">ZOOM 1:1</button></center>\n'
	html_devlist2 = '<button id="devlist2" class="devlist" style="float:right;">Device Detail2</button>\n'
	html_timeline = '<div id="dmesgzoombox" class="zoombox">\n<div id="{0}" class="timeline" style="height:{1}px">\n'
	html_device = '<div id="{0}" title="{1}" class="thread" style="left:{2}%;top:{3}%;height:{4}%;width:{5}%;">{6}</div>\n'
	html_traceevent = '<div title="{0}" class="traceevent" style="left:{1}%;top:{2}%;height:{3}%;width:{4}%;border:1px solid {5};background-color:{5}">{6}</div>\n'
	html_phase = '<div class="phase" style="left:{0}%;width:{1}%;top:{2}%;height:{3}%;background-color:{4}">{5}</div>\n'
	html_phaselet = '<div id="{0}" class="phaselet" style="left:{1}%;width:{2}%;background-color:{3}"></div>\n'
	html_legend = '<div class="square" style="left:{0}%;background-color:{1}">&nbsp;{2}</div>\n'
	html_timetotal = '<table class="time1">\n<tr>'\
		'<td class="green">{2} Suspend Time: <b>{0} ms</b></td>'\
		'<td class="yellow">{2} Resume Time: <b>{1} ms</b></td>'\
		'</tr>\n</table>\n'
	html_timetotal2 = '<table class="time1">\n<tr>'\
		'<td class="green">{3} Suspend Time: <b>{0} ms</b></td>'\
		'<td class="gray">'+sysvals.suspendmode+' time: <b>{1} ms</b></td>'\
		'<td class="yellow">{3} Resume Time: <b>{2} ms</b></td>'\
		'</tr>\n</table>\n'
	html_timegroups = '<table class="time2">\n<tr>'\
		'<td class="green">{4}Kernel Suspend: {0} ms</td>'\
		'<td class="purple">{4}Firmware Suspend: {1} ms</td>'\
		'<td class="purple">{4}Firmware Resume: {2} ms</td>'\
		'<td class="yellow">{4}Kernel Resume: {3} ms</td>'\
		'</tr>\n</table>\n'

	# device timeline
	vprint('Creating Device Timeline...')
	devtl = Timeline()

	# Generate the header for this timeline
	textnum = ['First', 'Second']
	for data in testruns:
		tTotal = data.end - data.start
		tEnd = data.dmesg['resume_complete']['end']
		if(tTotal == 0):
			print('ERROR: No timeline data')
			sys.exit()
		if(data.tLow > 0):
			low_time = '%.0f'%(data.tLow*1000)
		if data.fwValid:
			suspend_time = '%.0f'%((data.tSuspended-data.start)*1000 + \
				(data.fwSuspend/1000000.0))
			resume_time = '%.0f'%((tEnd-data.tSuspended)*1000 + \
				(data.fwResume/1000000.0))
			testdesc1 = 'Total'
			testdesc2 = ''
			if(len(testruns) > 1):
				testdesc1 = testdesc2 = textnum[data.testnumber]
				testdesc2 += ' '
			if(data.tLow == 0):
				thtml = html_timetotal.format(suspend_time, \
					resume_time, testdesc1)
			else:
				thtml = html_timetotal2.format(suspend_time, low_time, \
					resume_time, testdesc1)
			devtl.html['timeline'] += thtml
			sktime = '%.3f'%((data.dmesg['suspend_machine']['end'] - \
				data.getStart())*1000)
			sftime = '%.3f'%(data.fwSuspend / 1000000.0)
			rftime = '%.3f'%(data.fwResume / 1000000.0)
			rktime = '%.3f'%((data.getEnd() - \
				data.dmesg['resume_machine']['start'])*1000)
			devtl.html['timeline'] += html_timegroups.format(sktime, \
				sftime, rftime, rktime, testdesc2)
		else:
			suspend_time = '%.0f'%((data.tSuspended-data.start)*1000)
			resume_time = '%.0f'%((tEnd-data.tSuspended)*1000)
			testdesc = 'Kernel'
			if(len(testruns) > 1):
				testdesc = textnum[data.testnumber]+' '+testdesc
			if(data.tLow == 0):
				thtml = html_timetotal.format(suspend_time, \
					resume_time, testdesc)
			else:
				thtml = html_timetotal2.format(suspend_time, low_time, \
					resume_time, testdesc)
			devtl.html['timeline'] += thtml

	# time scale for potentially multiple datasets
	t0 = testruns[0].start
	tMax = testruns[-1].end
	tSuspended = testruns[-1].tSuspended
	tTotal = tMax - t0

	# determine the maximum number of rows we need to draw
	timelinerows = 0
	for data in testruns:
		for phase in data.dmesg:
			list = data.dmesg[phase]['list']
			rows = setTimelineRows(list, list)
			data.dmesg[phase]['row'] = rows
			if(rows > timelinerows):
				timelinerows = rows

	# calculate the timeline height and create bounding box, add buttons
	devtl.setRows(timelinerows + 1)
	devtl.html['timeline'] += html_devlist1
	if len(testruns) > 1:
		devtl.html['timeline'] += html_devlist2
	devtl.html['timeline'] += html_zoombox
	devtl.html['timeline'] += html_timeline.format('dmesg', devtl.height)

	# draw the colored boxes for each of the phases
	for data in testruns:
		for b in data.dmesg:
			phase = data.dmesg[b]
			length = phase['end']-phase['start']
			left = '%.3f' % (((phase['start']-t0)*100.0)/tTotal)
			width = '%.3f' % ((length*100.0)/tTotal)
			devtl.html['timeline'] += html_phase.format(left, width, \
				'%.3f'%devtl.scaleH, '%.3f'%(100-devtl.scaleH), \
				data.dmesg[b]['color'], '')

	# draw the time scale, try to make the number of labels readable
	devtl.html['scale'] = createTimeScale(t0, tMax, tSuspended)
	devtl.html['timeline'] += devtl.html['scale']
	for data in testruns:
		for b in data.dmesg:
			phaselist = data.dmesg[b]['list']
			for d in phaselist:
				name = d
				drv = ''
				dev = phaselist[d]
				if(d in sysvals.altdevname):
					name = sysvals.altdevname[d]
				if('drv' in dev and dev['drv']):
					drv = ' {%s}' % dev['drv']
				height = (100.0 - devtl.scaleH)/data.dmesg[b]['row']
				top = '%.3f' % ((dev['row']*height) + devtl.scaleH)
				left = '%.3f' % (((dev['start']-t0)*100)/tTotal)
				width = '%.3f' % (((dev['end']-dev['start'])*100)/tTotal)
				length = ' (%0.3f ms) ' % ((dev['end']-dev['start'])*1000)
				color = 'rgba(204,204,204,0.5)'
				devtl.html['timeline'] += html_device.format(dev['id'], \
					d+drv+length+b, left, top, '%.3f'%height, width, name+drv)

	# draw any trace events found
	for data in testruns:
		for b in data.dmesg:
			phaselist = data.dmesg[b]['list']
			for name in phaselist:
				dev = phaselist[name]
				if('traceevents' in dev):
					vprint('Debug trace events found for device %s' % name)
					vprint('%20s %20s %10s %8s' % ('action', \
						'name', 'time(ms)', 'length(ms)'))
					for e in dev['traceevents']:
						vprint('%20s %20s %10.3f %8.3f' % (e.action, \
							e.name, e.time*1000, e.length*1000))
						height = (100.0 - devtl.scaleH)/data.dmesg[b]['row']
						top = '%.3f' % ((dev['row']*height) + devtl.scaleH)
						left = '%.3f' % (((e.time-t0)*100)/tTotal)
						width = '%.3f' % (e.length*100/tTotal)
						color = 'rgba(204,204,204,0.5)'
						devtl.html['timeline'] += \
							html_traceevent.format(e.action+' '+e.name, \
								left, top, '%.3f'%height, \
								width, e.color, '')

	# timeline is finished
	devtl.html['timeline'] += '</div>\n</div>\n'

	# draw a legend which describes the phases by color
	data = testruns[-1]
	devtl.html['legend'] = '<div class="legend">\n'
	pdelta = 100.0/len(data.phases)
	pmargin = pdelta / 4.0
	for phase in data.phases:
		order = '%.2f' % ((data.dmesg[phase]['order'] * pdelta) + pmargin)
		name = string.replace(phase, '_', ' &nbsp;')
		devtl.html['legend'] += html_legend.format(order, \
			data.dmesg[phase]['color'], name)
	devtl.html['legend'] += '</div>\n'

	hf = open(sysvals.htmlfile, 'w')
	thread_height = 0

	# write the html header first (html head, css code, up to body start)
	html_header = '<!DOCTYPE html>\n<html>\n<head>\n\
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">\n\
	<title>AnalyzeSuspend</title>\n\
	<style type=\'text/css\'>\n\
		body {overflow-y: scroll;}\n\
		.stamp {width: 100%;text-align:center;background-color:gray;line-height:30px;color:white;font: 25px Arial;}\n\
		.callgraph {margin-top: 30px;box-shadow: 5px 5px 20px black;}\n\
		.callgraph article * {padding-left: 28px;}\n\
		h1 {color:black;font: bold 30px Times;}\n\
		t0 {color:black;font: bold 30px Times;}\n\
		t1 {color:black;font: 30px Times;}\n\
		t2 {color:black;font: 25px Times;}\n\
		t3 {color:black;font: 20px Times;white-space:nowrap;}\n\
		t4 {color:black;font: bold 30px Times;line-height:60px;white-space:nowrap;}\n\
		table {width:100%;}\n\
		.gray {background-color:rgba(80,80,80,0.1);}\n\
		.green {background-color:rgba(204,255,204,0.4);}\n\
		.purple {background-color:rgba(128,0,128,0.2);}\n\
		.yellow {background-color:rgba(255,255,204,0.4);}\n\
		.time1 {font: 22px Arial;border:1px solid;}\n\
		.time2 {font: 15px Arial;border-bottom:1px solid;border-left:1px solid;border-right:1px solid;}\n\
		td {text-align: center;}\n\
		r {color:#500000;font:15px Tahoma;}\n\
		n {color:#505050;font:15px Tahoma;}\n\
		.tdhl {color: red;}\n\
		.hide {display: none;}\n\
		.pf {display: none;}\n\
		.pf:checked + label {background: url(\'data:image/svg+xml;utf,<?xml version="1.0" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" height="18" width="18" version="1.1"><circle cx="9" cy="9" r="8" stroke="black" stroke-width="1" fill="white"/><rect x="4" y="8" width="10" height="2" style="fill:black;stroke-width:0"/><rect x="8" y="4" width="2" height="10" style="fill:black;stroke-width:0"/></svg>\') no-repeat left center;}\n\
		.pf:not(:checked) ~ label {background: url(\'data:image/svg+xml;utf,<?xml version="1.0" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" height="18" width="18" version="1.1"><circle cx="9" cy="9" r="8" stroke="black" stroke-width="1" fill="white"/><rect x="4" y="8" width="10" height="2" style="fill:black;stroke-width:0"/></svg>\') no-repeat left center;}\n\
		.pf:checked ~ *:not(:nth-child(2)) {display: none;}\n\
		.zoombox {position: relative; width: 100%; overflow-x: scroll;}\n\
		.timeline {position: relative; font-size: 14px;cursor: pointer;width: 100%; overflow: hidden; background-color:#dddddd;}\n\
		.thread {position: absolute; height: '+'%.3f'%thread_height+'%; overflow: hidden; line-height: 30px; border:1px solid;text-align:center;white-space:nowrap;background-color:rgba(204,204,204,0.5);}\n\
		.thread:hover {background-color:white;border:1px solid red;z-index:10;}\n\
		.hover {background-color:white;border:1px solid red;z-index:10;}\n\
		.traceevent {position: absolute;opacity: 0.3;height: '+'%.3f'%thread_height+'%;width:0;overflow:hidden;line-height:30px;text-align:center;white-space:nowrap;}\n\
		.phase {position: absolute;overflow: hidden;border:0px;text-align:center;}\n\
		.phaselet {position:absolute;overflow:hidden;border:0px;text-align:center;height:100px;font-size:24px;}\n\
		.t {position:absolute;top:0%;height:100%;border-right:1px solid black;}\n\
		.legend {position: relative; width: 100%; height: 40px; text-align: center;margin-bottom:20px}\n\
		.legend .square {position:absolute;top:10px; width: 0px;height: 20px;border:1px solid;padding-left:20px;}\n\
		button {height:40px;width:200px;margin-bottom:20px;margin-top:20px;font-size:24px;}\n\
		.devlist {position:'+x2changes[1]+';width:190px;}\n\
		#devicedetail {height:100px;box-shadow: 5px 5px 20px black;}\n\
	</style>\n</head>\n<body>\n'
	hf.write(html_header)

	# write the test title and general info header
	if(sysvals.stamp['time'] != ""):
		hf.write(headline_stamp.format(sysvals.stamp['host'],
			sysvals.stamp['kernel'], sysvals.stamp['mode'], \
				sysvals.stamp['time']))

	# write the device timeline
	hf.write(devtl.html['timeline'])
	hf.write(devtl.html['legend'])
	hf.write('<div id="devicedetailtitle"></div>\n')
	hf.write('<div id="devicedetail" style="display:none;">\n')
	# draw the colored boxes for the device detail section
	for data in testruns:
		hf.write('<div id="devicedetail%d">\n' % data.testnumber)
		for b in data.phases:
			phase = data.dmesg[b]
			length = phase['end']-phase['start']
			left = '%.3f' % (((phase['start']-t0)*100.0)/tTotal)
			width = '%.3f' % ((length*100.0)/tTotal)
			hf.write(html_phaselet.format(b, left, width, \
				data.dmesg[b]['color']))
		hf.write('</div>\n')
	hf.write('</div>\n')

	# write the ftrace data (callgraph)
	data = testruns[-1]
	if(sysvals.usecallgraph):
		hf.write('<section id="callgraphs" class="callgraph">\n')
		# write out the ftrace data converted to html
		html_func_top = '<article id="{0}" class="atop" style="background-color:{1}">\n<input type="checkbox" class="pf" id="f{2}" checked/><label for="f{2}">{3} {4}</label>\n'
		html_func_start = '<article>\n<input type="checkbox" class="pf" id="f{0}" checked/><label for="f{0}">{1} {2}</label>\n'
		html_func_end = '</article>\n'
		html_func_leaf = '<article>{0} {1}</article>\n'
		num = 0
		for p in data.phases:
			list = data.dmesg[p]['list']
			for devname in data.sortedDevices(p):
				if('ftrace' not in list[devname]):
					continue
				name = devname
				if(devname in sysvals.altdevname):
					name = sysvals.altdevname[devname]
				devid = list[devname]['id']
				cg = list[devname]['ftrace']
				flen = '<r>(%.3f ms @ %.3f to %.3f)</r>' % \
					((cg.end - cg.start)*1000, cg.start*1000, cg.end*1000)
				hf.write(html_func_top.format(devid, data.dmesg[p]['color'], \
					num, name+' '+p, flen))
				num += 1
				for line in cg.list:
					if(line.length < 0.000000001):
						flen = ''
					else:
						flen = '<n>(%.3f ms @ %.3f)</n>' % (line.length*1000, \
							line.time*1000)
					if(line.freturn and line.fcall):
						hf.write(html_func_leaf.format(line.name, flen))
					elif(line.freturn):
						hf.write(html_func_end)
					else:
						hf.write(html_func_start.format(num, line.name, flen))
						num += 1
				hf.write(html_func_end)
		hf.write('\n\n    </section>\n')
	# write the footer and close
	addScriptCode(hf, testruns)
	hf.write('</body>\n</html>\n')
	hf.close()
	return True

# Function: addScriptCode
# Description:
#	 Adds the javascript code to the output html
# Arguments:
#	 hf: the open html file pointer
#	 testruns: array of Data objects from parseKernelLog or parseTraceLog
def addScriptCode(hf, testruns):
	t0 = (testruns[0].start - testruns[-1].tSuspended) * 1000
	tMax = (testruns[-1].end - testruns[-1].tSuspended) * 1000
	# create an array in javascript memory with the device details
	detail = '	var devtable = [];\n'
	for data in testruns:
		topo = data.deviceTopology()
		detail += '	devtable[%d] = "%s";\n' % (data.testnumber, topo)
	detail += '	var bounds = [%f,%f];\n' % (t0, tMax)
	# add the code which will manipulate the data in the browser
	script_code = \
	'<script type="text/javascript">\n'+detail+\
	'	function zoomTimeline() {\n'\
	'		var timescale = document.getElementById("timescale");\n'\
	'		var dmesg = document.getElementById("dmesg");\n'\
	'		var zoombox = document.getElementById("dmesgzoombox");\n'\
	'		var val = parseFloat(dmesg.style.width);\n'\
	'		var newval = 100;\n'\
	'		var sh = window.outerWidth / 2;\n'\
	'		if(this.id == "zoomin") {\n'\
	'			newval = val * 1.2;\n'\
	'			if(newval > 40000) newval = 40000;\n'\
	'			dmesg.style.width = newval+"%";\n'\
	'			zoombox.scrollLeft = ((zoombox.scrollLeft + sh) * newval / val) - sh;\n'\
	'		} else if (this.id == "zoomout") {\n'\
	'			newval = val / 1.2;\n'\
	'			if(newval < 100) newval = 100;\n'\
	'			dmesg.style.width = newval+"%";\n'\
	'			zoombox.scrollLeft = ((zoombox.scrollLeft + sh) * newval / val) - sh;\n'\
	'		} else {\n'\
	'			zoombox.scrollLeft = 0;\n'\
	'			dmesg.style.width = "100%";\n'\
	'		}\n'\
	'		var html = "";\n'\
	'		var t0 = bounds[0];\n'\
	'		var tMax = bounds[1];\n'\
	'		var tTotal = tMax - t0;\n'\
	'		var wTotal = tTotal * 100.0 / newval;\n'\
	'		for(var tS = 1000; (wTotal / tS) < 3; tS /= 10);\n'\
	'		if(tS < 1) tS = 1;\n'\
	'		for(var s = ((t0 / tS)|0) * tS; s < tMax; s += tS) {\n'\
	'			var pos = (tMax - s) * 100.0 / tTotal;\n'\
	'			var name = (s == 0)?"S/R":(s+"ms");\n'\
	'			html += "<div class=\\"t\\" style=\\"right:"+pos+"%\\">"+name+"</div>";\n'\
	'		}\n'\
	'		timescale.innerHTML = html;\n'\
	'	}\n'\
	'	function deviceHover() {\n'\
	'		var name = this.title.slice(0, this.title.indexOf(" ("));\n'\
	'		var dmesg = document.getElementById("dmesg");\n'\
	'		var dev = dmesg.getElementsByClassName("thread");\n'\
	'		var cpu = -1;\n'\
	'		if(name.match("CPU_ON\[[0-9]*\]"))\n'\
	'			cpu = parseInt(name.slice(7));\n'\
	'		else if(name.match("CPU_OFF\[[0-9]*\]"))\n'\
	'			cpu = parseInt(name.slice(8));\n'\
	'		for (var i = 0; i < dev.length; i++) {\n'\
	'			dname = dev[i].title.slice(0, dev[i].title.indexOf(" ("));\n'\
	'			if((cpu >= 0 && dname.match("CPU_O[NF]*\\\[*"+cpu+"\\\]")) ||\n'\
	'				(name == dname))\n'\
	'			{\n'\
	'				dev[i].className = "thread hover";\n'\
	'			} else {\n'\
	'				dev[i].className = "thread";\n'\
	'			}\n'\
	'		}\n'\
	'	}\n'\
	'	function deviceUnhover() {\n'\
	'		var dmesg = document.getElementById("dmesg");\n'\
	'		var dev = dmesg.getElementsByClassName("thread");\n'\
	'		for (var i = 0; i < dev.length; i++) {\n'\
	'			dev[i].className = "thread";\n'\
	'		}\n'\
	'	}\n'\
	'	function deviceTitle(title, total, cpu) {\n'\
	'		var prefix = "Total";\n'\
	'		if(total.length > 3) {\n'\
	'			prefix = "Average";\n'\
	'			total[1] = (total[1]+total[3])/2;\n'\
	'			total[2] = (total[2]+total[4])/2;\n'\
	'		}\n'\
	'		var devtitle = document.getElementById("devicedetailtitle");\n'\
	'		var name = title.slice(0, title.indexOf(" "));\n'\
	'		if(cpu >= 0) name = "CPU"+cpu;\n'\
	'		var driver = "";\n'\
	'		var tS = "<t2>(</t2>";\n'\
	'		var tR = "<t2>)</t2>";\n'\
	'		if(total[1] > 0)\n'\
	'			tS = "<t2>("+prefix+" Suspend:</t2><t0> "+total[1].toFixed(3)+" ms</t0> ";\n'\
	'		if(total[2] > 0)\n'\
	'			tR = " <t2>"+prefix+" Resume:</t2><t0> "+total[2].toFixed(3)+" ms<t2>)</t2></t0>";\n'\
	'		var s = title.indexOf("{");\n'\
	'		var e = title.indexOf("}");\n'\
	'		if((s >= 0) && (e >= 0))\n'\
	'			driver = title.slice(s+1, e) + " <t1>@</t1> ";\n'\
	'		if(total[1] > 0 && total[2] > 0)\n'\
	'			devtitle.innerHTML = "<t0>"+driver+name+"</t0> "+tS+tR;\n'\
	'		else\n'\
	'			devtitle.innerHTML = "<t0>"+title+"</t0>";\n'\
	'		return name;\n'\
	'	}\n'\
	'	function deviceDetail() {\n'\
	'		var devinfo = document.getElementById("devicedetail");\n'\
	'		devinfo.style.display = "block";\n'\
	'		var name = this.title.slice(0, this.title.indexOf(" ("));\n'\
	'		var cpu = -1;\n'\
	'		if(name.match("CPU_ON\[[0-9]*\]"))\n'\
	'			cpu = parseInt(name.slice(7));\n'\
	'		else if(name.match("CPU_OFF\[[0-9]*\]"))\n'\
	'			cpu = parseInt(name.slice(8));\n'\
	'		var dmesg = document.getElementById("dmesg");\n'\
	'		var dev = dmesg.getElementsByClassName("thread");\n'\
	'		var idlist = [];\n'\
	'		var pdata = [[]];\n'\
	'		var pd = pdata[0];\n'\
	'		var total = [0.0, 0.0, 0.0];\n'\
	'		for (var i = 0; i < dev.length; i++) {\n'\
	'			dname = dev[i].title.slice(0, dev[i].title.indexOf(" ("));\n'\
	'			if((cpu >= 0 && dname.match("CPU_O[NF]*\\\[*"+cpu+"\\\]")) ||\n'\
	'				(name == dname))\n'\
	'			{\n'\
	'				idlist[idlist.length] = dev[i].id;\n'\
	'				var tidx = 1;\n'\
	'				if(dev[i].id[0] == "a") {\n'\
	'					pd = pdata[0];\n'\
	'				} else {\n'\
	'					if(pdata.length == 1) pdata[1] = [];\n'\
	'					if(total.length == 3) total[3]=total[4]=0.0;\n'\
	'					pd = pdata[1];\n'\
	'					tidx = 3;\n'\
	'				}\n'\
	'				var info = dev[i].title.split(" ");\n'\
	'				var pname = info[info.length-1];\n'\
	'				pd[pname] = parseFloat(info[info.length-3].slice(1));\n'\
	'				total[0] += pd[pname];\n'\
	'				if(pname.indexOf("suspend") >= 0)\n'\
	'					total[tidx] += pd[pname];\n'\
	'				else\n'\
	'					total[tidx+1] += pd[pname];\n'\
	'			}\n'\
	'		}\n'\
	'		var devname = deviceTitle(this.title, total, cpu);\n'\
	'		var left = 0.0;\n'\
	'		for (var t = 0; t < pdata.length; t++) {\n'\
	'			pd = pdata[t];\n'\
	'			devinfo = document.getElementById("devicedetail"+t);\n'\
	'			var phases = devinfo.getElementsByClassName("phaselet");\n'\
	'			for (var i = 0; i < phases.length; i++) {\n'\
	'				if(phases[i].id in pd) {\n'\
	'					var w = 100.0*pd[phases[i].id]/total[0];\n'\
	'					var fs = 32;\n'\
	'					if(w < 8) fs = 4*w | 0;\n'\
	'					var fs2 = fs*3/4;\n'\
	'					phases[i].style.width = w+"%";\n'\
	'					phases[i].style.left = left+"%";\n'\
	'					phases[i].title = phases[i].id+" "+pd[phases[i].id]+" ms";\n'\
	'					left += w;\n'\
	'					var time = "<t4 style=\\"font-size:"+fs+"px\\">"+pd[phases[i].id]+" ms<br></t4>";\n'\
	'					var pname = "<t3 style=\\"font-size:"+fs2+"px\\">"+phases[i].id.replace("_", " ")+"</t3>";\n'\
	'					phases[i].innerHTML = time+pname;\n'\
	'				} else {\n'\
	'					phases[i].style.width = "0%";\n'\
	'					phases[i].style.left = left+"%";\n'\
	'				}\n'\
	'			}\n'\
	'		}\n'\
	'		var cglist = document.getElementById("callgraphs");\n'\
	'		if(!cglist) return;\n'\
	'		var cg = cglist.getElementsByClassName("atop");\n'\
	'		for (var i = 0; i < cg.length; i++) {\n'\
	'			if(idlist.indexOf(cg[i].id) >= 0) {\n'\
	'				cg[i].style.display = "block";\n'\
	'			} else {\n'\
	'				cg[i].style.display = "none";\n'\
	'			}\n'\
	'		}\n'\
	'	}\n'\
	'	function devListWindow(e) {\n'\
	'		var sx = e.clientX;\n'\
	'		if(sx > window.innerWidth - 440)\n'\
	'			sx = window.innerWidth - 440;\n'\
	'		var cfg="top="+e.screenY+", left="+sx+", width=440, height=720, scrollbars=yes";\n'\
	'		var win = window.open("", "_blank", cfg);\n'\
	'		if(window.chrome) win.moveBy(sx, 0);\n'\
	'		var html = "<title>"+e.target.innerHTML+"</title>"+\n'\
	'			"<style type=\\"text/css\\">"+\n'\
	'			"   ul {list-style-type:circle;padding-left:10px;margin-left:10px;}"+\n'\
	'			"</style>"\n'\
	'		var dt = devtable[0];\n'\
	'		if(e.target.id != "devlist1")\n'\
	'			dt = devtable[1];\n'\
	'		win.document.write(html+dt);\n'\
	'	}\n'\
	'	window.addEventListener("load", function () {\n'\
	'		var dmesg = document.getElementById("dmesg");\n'\
	'		dmesg.style.width = "100%"\n'\
	'		document.getElementById("zoomin").onclick = zoomTimeline;\n'\
	'		document.getElementById("zoomout").onclick = zoomTimeline;\n'\
	'		document.getElementById("zoomdef").onclick = zoomTimeline;\n'\
	'		var devlist = document.getElementsByClassName("devlist");\n'\
	'		for (var i = 0; i < devlist.length; i++)\n'\
	'			devlist[i].onclick = devListWindow;\n'\
	'		var dev = dmesg.getElementsByClassName("thread");\n'\
	'		for (var i = 0; i < dev.length; i++) {\n'\
	'			dev[i].onclick = deviceDetail;\n'\
	'			dev[i].onmouseover = deviceHover;\n'\
	'			dev[i].onmouseout = deviceUnhover;\n'\
	'		}\n'\
	'		zoomTimeline();\n'\
	'	});\n'\
	'</script>\n'
	hf.write(script_code);

# Function: executeSuspend
# Description:
#	 Execute system suspend through the sysfs interface, then copy the output
#	 dmesg and ftrace files to the test output directory.
def executeSuspend():
	global sysvals

	detectUSB(False)
	t0 = time.time()*1000
	tp = sysvals.tpath
	# execute however many s/r runs requested
	for count in range(1,sysvals.execcount+1):
		# clear the kernel ring buffer just as we start
		os.system('dmesg -C')
		# enable callgraph ftrace only for the second run
		if(sysvals.usecallgraph and count == 2):
			# set trace type
			os.system('echo function_graph > '+tp+'current_tracer')
			os.system('echo "" > '+tp+'set_ftrace_filter')
			# set trace format options
			os.system('echo funcgraph-abstime > '+tp+'trace_options')
			os.system('echo funcgraph-proc > '+tp+'trace_options')
			# focus only on device suspend and resume
			os.system('cat '+tp+'available_filter_functions | '+\
				'grep dpm_run_callback > '+tp+'set_graph_function')
		# if this is test2 and there's a delay, start here
		if(count > 1 and sysvals.x2delay > 0):
			tN = time.time()*1000
			while (tN - t0) < sysvals.x2delay:
				tN = time.time()*1000
				time.sleep(0.001)
		# start ftrace
		if(sysvals.usecallgraph or sysvals.usetraceevents):
			print('START TRACING')
			os.system('echo 1 > '+tp+'tracing_on')
		# initiate suspend
		if(sysvals.usecallgraph or sysvals.usetraceevents):
			os.system('echo SUSPEND START > '+tp+'trace_marker')
		if(sysvals.rtcwake):
			print('SUSPEND START')
			print('will autoresume in %d seconds' % sysvals.rtcwaketime)
			sysvals.rtcWakeAlarm()
		else:
			print('SUSPEND START (press a key to resume)')
		pf = open(sysvals.powerfile, 'w')
		pf.write(sysvals.suspendmode)
		# execution will pause here
		pf.close()
		t0 = time.time()*1000
		# return from suspend
		print('RESUME COMPLETE')
		if(sysvals.usecallgraph or sysvals.usetraceevents):
			os.system('echo RESUME COMPLETE > '+tp+'trace_marker')
		# see if there's firmware timing data to be had
		t = sysvals.postresumetime
		if(t > 0):
			print('Waiting %d seconds for POST-RESUME trace events...' % t)
			time.sleep(t)
		# stop ftrace
		if(sysvals.usecallgraph or sysvals.usetraceevents):
			os.system('echo 0 > '+tp+'tracing_on')
			print('CAPTURING TRACE')
			writeDatafileHeader(sysvals.ftracefile)
			os.system('cat '+tp+'trace >> '+sysvals.ftracefile)
			os.system('echo "" > '+tp+'trace')
		# grab a copy of the dmesg output
		print('CAPTURING DMESG')
		writeDatafileHeader(sysvals.dmesgfile)
		os.system('dmesg -c >> '+sysvals.dmesgfile)

def writeDatafileHeader(filename):
	global sysvals

	fw = getFPDT(False)
	prt = sysvals.postresumetime
	fp = open(filename, 'a')
	fp.write(sysvals.teststamp+'\n')
	if(fw):
		fp.write('# fwsuspend %u fwresume %u\n' % (fw[0], fw[1]))
	if(prt > 0):
		fp.write('# post resume time %u\n' % prt)
	fp.close()

# Function: executeAndroidSuspend
# Description:
#	 Execute system suspend through the sysfs interface
#	 on a remote android device, then transfer the output
#	 dmesg and ftrace files to the local output directory.
def executeAndroidSuspend():
	global sysvals

	# check to see if the display is currently off
	tp = sysvals.tpath
	out = os.popen(sysvals.adb+\
		' shell dumpsys power | grep mScreenOn').read().strip()
	# if so we need to turn it on so we can issue a new suspend
	if(out.endswith('false')):
		print('Waking the device up for the test...')
		# send the KEYPAD_POWER keyevent to wake it up
		os.system(sysvals.adb+' shell input keyevent 26')
		# wait a few seconds so the user can see the device wake up
		time.sleep(3)
	# execute however many s/r runs requested
	for count in range(1,sysvals.execcount+1):
		# clear the kernel ring buffer just as we start
		os.system(sysvals.adb+' shell dmesg -c > /dev/null 2>&1')
		# start ftrace
		if(sysvals.usetraceevents):
			print('START TRACING')
			os.system(sysvals.adb+" shell 'echo 1 > "+tp+"tracing_on'")
		# initiate suspend
		for count in range(1,sysvals.execcount+1):
			if(sysvals.usetraceevents):
				os.system(sysvals.adb+\
					" shell 'echo SUSPEND START > "+tp+"trace_marker'")
			print('SUSPEND START (press a key on the device to resume)')
			os.system(sysvals.adb+" shell 'echo "+sysvals.suspendmode+\
				" > "+sysvals.powerfile+"'")
			# execution will pause here, then adb will exit
			while(True):
				check = os.popen(sysvals.adb+\
					' shell pwd 2>/dev/null').read().strip()
				if(len(check) > 0):
					break
				time.sleep(1)
			if(sysvals.usetraceevents):
				os.system(sysvals.adb+" shell 'echo RESUME COMPLETE > "+tp+\
					"trace_marker'")
		# return from suspend
		print('RESUME COMPLETE')
		# stop ftrace
		if(sysvals.usetraceevents):
			os.system(sysvals.adb+" shell 'echo 0 > "+tp+"tracing_on'")
			print('CAPTURING TRACE')
			os.system('echo "'+sysvals.teststamp+'" > '+sysvals.ftracefile)
			os.system(sysvals.adb+' shell cat '+tp+\
				'trace >> '+sysvals.ftracefile)
		# grab a copy of the dmesg output
		print('CAPTURING DMESG')
		os.system('echo "'+sysvals.teststamp+'" > '+sysvals.dmesgfile)
		os.system(sysvals.adb+' shell dmesg >> '+sysvals.dmesgfile)

# Function: setUSBDevicesAuto
# Description:
#	 Set the autosuspend control parameter of all USB devices to auto
#	 This can be dangerous, so use at your own risk, most devices are set
#	 to always-on since the kernel cant determine if the device can
#	 properly autosuspend
def setUSBDevicesAuto():
	global sysvals

	rootCheck()
	for dirname, dirnames, filenames in os.walk('/sys/devices'):
		if(re.match('.*/usb[0-9]*.*', dirname) and
			'idVendor' in filenames and 'idProduct' in filenames):
			os.system('echo auto > %s/power/control' % dirname)
			name = dirname.split('/')[-1]
			desc = os.popen('cat %s/product 2>/dev/null' % \
				dirname).read().replace('\n', '')
			ctrl = os.popen('cat %s/power/control 2>/dev/null' % \
				dirname).read().replace('\n', '')
			print('control is %s for %6s: %s' % (ctrl, name, desc))

# Function: yesno
# Description:
#	 Print out an equivalent Y or N for a set of known parameter values
# Output:
#	 'Y', 'N', or ' ' if the value is unknown
def yesno(val):
	yesvals = ['auto', 'enabled', 'active', '1']
	novals = ['on', 'disabled', 'suspended', 'forbidden', 'unsupported']
	if val in yesvals:
		return 'Y'
	elif val in novals:
		return 'N'
	return ' '

# Function: ms2nice
# Description:
#	 Print out a very concise time string in minutes and seconds
# Output:
#	 The time string, e.g. "1901m16s"
def ms2nice(val):
	ms = 0
	try:
		ms = int(val)
	except:
		return 0.0
	m = ms / 60000
	s = (ms / 1000) - (m * 60)
	return '%3dm%2ds' % (m, s)

# Function: detectUSB
# Description:
#	 Detect all the USB hosts and devices currently connected and add
#	 a list of USB device names to sysvals for better timeline readability
# Arguments:
#	 output: True to output the info to stdout, False otherwise
def detectUSB(output):
	global sysvals

	field = {'idVendor':'', 'idProduct':'', 'product':'', 'speed':''}
	power = {'async':'', 'autosuspend':'', 'autosuspend_delay_ms':'',
			 'control':'', 'persist':'', 'runtime_enabled':'',
			 'runtime_status':'', 'runtime_usage':'',
			'runtime_active_time':'',
			'runtime_suspended_time':'',
			'active_duration':'',
			'connected_duration':''}
	if(output):
		print('LEGEND')
		print('---------------------------------------------------------------------------------------------')
		print('  A = async/sync PM queue Y/N                       D = autosuspend delay (seconds)')
		print('  S = autosuspend Y/N                         rACTIVE = runtime active (min/sec)')
		print('  P = persist across suspend Y/N              rSUSPEN = runtime suspend (min/sec)')
		print('  E = runtime suspend enabled/forbidden Y/N    ACTIVE = active duration (min/sec)')
		print('  R = runtime status active/suspended Y/N     CONNECT = connected duration (min/sec)')
		print('  U = runtime usage count')
		print('---------------------------------------------------------------------------------------------')
		print('  NAME       ID      DESCRIPTION         SPEED A S P E R U D rACTIVE rSUSPEN  ACTIVE CONNECT')
		print('---------------------------------------------------------------------------------------------')

	for dirname, dirnames, filenames in os.walk('/sys/devices'):
		if(re.match('.*/usb[0-9]*.*', dirname) and
			'idVendor' in filenames and 'idProduct' in filenames):
			for i in field:
				field[i] = os.popen('cat %s/%s 2>/dev/null' % \
					(dirname, i)).read().replace('\n', '')
			name = dirname.split('/')[-1]
			if(len(field['product']) > 0):
				sysvals.altdevname[name] = \
					'%s [%s]' % (field['product'], name)
			else:
				sysvals.altdevname[name] = \
					'%s:%s [%s]' % (field['idVendor'], \
						field['idProduct'], name)
			if(output):
				for i in power:
					power[i] = os.popen('cat %s/power/%s 2>/dev/null' % \
						(dirname, i)).read().replace('\n', '')
				if(re.match('usb[0-9]*', name)):
					first = '%-8s' % name
				else:
					first = '%8s' % name
				print('%s [%s:%s] %-20s %-4s %1s %1s %1s %1s %1s %1s %1s %s %s %s %s' % \
					(first, field['idVendor'], field['idProduct'], \
					field['product'][0:20], field['speed'], \
					yesno(power['async']), \
					yesno(power['control']), \
					yesno(power['persist']), \
					yesno(power['runtime_enabled']), \
					yesno(power['runtime_status']), \
					power['runtime_usage'], \
					power['autosuspend'], \
					ms2nice(power['runtime_active_time']), \
					ms2nice(power['runtime_suspended_time']), \
					ms2nice(power['active_duration']), \
					ms2nice(power['connected_duration'])))

# Function: getModes
# Description:
#	 Determine the supported power modes on this system
# Output:
#	 A string list of the available modes
def getModes():
	global sysvals
	modes = ''
	if(not sysvals.android):
		if(os.path.exists(sysvals.powerfile)):
			fp = open(sysvals.powerfile, 'r')
			modes = string.split(fp.read())
			fp.close()
	else:
		line = os.popen(sysvals.adb+' shell cat '+\
			sysvals.powerfile).read().strip()
		modes = string.split(line)
	return modes

# Function: getFPDT
# Description:
#	 Read the acpi bios tables and pull out FPDT, the firmware data
# Arguments:
#	 output: True to output the info to stdout, False otherwise
def getFPDT(output):
	global sysvals

	rectype = {}
	rectype[0] = 'Firmware Basic Boot Performance Record'
	rectype[1] = 'S3 Performance Table Record'
	prectype = {}
	prectype[0] = 'Basic S3 Resume Performance Record'
	prectype[1] = 'Basic S3 Suspend Performance Record'

	rootCheck()
	if(not os.path.exists(sysvals.fpdtpath)):
		if(output):
			doError('file doesnt exist: %s' % sysvals.fpdtpath, False)
		return False
	if(not os.access(sysvals.fpdtpath, os.R_OK)):
		if(output):
			doError('file isnt readable: %s' % sysvals.fpdtpath, False)
		return False
	if(not os.path.exists(sysvals.mempath)):
		if(output):
			doError('file doesnt exist: %s' % sysvals.mempath, False)
		return False
	if(not os.access(sysvals.mempath, os.R_OK)):
		if(output):
			doError('file isnt readable: %s' % sysvals.mempath, False)
		return False

	fp = open(sysvals.fpdtpath, 'rb')
	buf = fp.read()
	fp.close()

	if(len(buf) < 36):
		if(output):
			doError('Invalid FPDT table data, should '+\
				'be at least 36 bytes', False)
		return False

	table = struct.unpack('4sIBB6s8sI4sI', buf[0:36])
	if(output):
		print('')
		print('Firmware Performance Data Table (%s)' % table[0])
		print('                  Signature : %s' % table[0])
		print('               Table Length : %u' % table[1])
		print('                   Revision : %u' % table[2])
		print('                   Checksum : 0x%x' % table[3])
		print('                     OEM ID : %s' % table[4])
		print('               OEM Table ID : %s' % table[5])
		print('               OEM Revision : %u' % table[6])
		print('                 Creator ID : %s' % table[7])
		print('           Creator Revision : 0x%x' % table[8])
		print('')

	if(table[0] != 'FPDT'):
		if(output):
			doError('Invalid FPDT table')
		return False
	if(len(buf) <= 36):
		return False
	i = 0
	fwData = [0, 0]
	records = buf[36:]
	fp = open(sysvals.mempath, 'rb')
	while(i < len(records)):
		header = struct.unpack('HBB', records[i:i+4])
		if(header[0] not in rectype):
			continue
		if(header[1] != 16):
			continue
		addr = struct.unpack('Q', records[i+8:i+16])[0]
		try:
			fp.seek(addr)
			first = fp.read(8)
		except:
			doError('Bad address 0x%x in %s' % (addr, sysvals.mempath), False)
		rechead = struct.unpack('4sI', first)
		recdata = fp.read(rechead[1]-8)
		if(rechead[0] == 'FBPT'):
			record = struct.unpack('HBBIQQQQQ', recdata)
			if(output):
				print('%s (%s)' % (rectype[header[0]], rechead[0]))
				print('                  Reset END : %u ns' % record[4])
				print('  OS Loader LoadImage Start : %u ns' % record[5])
				print(' OS Loader StartImage Start : %u ns' % record[6])
				print('     ExitBootServices Entry : %u ns' % record[7])
				print('      ExitBootServices Exit : %u ns' % record[8])
		elif(rechead[0] == 'S3PT'):
			if(output):
				print('%s (%s)' % (rectype[header[0]], rechead[0]))
			j = 0
			while(j < len(recdata)):
				prechead = struct.unpack('HBB', recdata[j:j+4])
				if(prechead[0] not in prectype):
					continue
				if(prechead[0] == 0):
					record = struct.unpack('IIQQ', recdata[j:j+prechead[1]])
					fwData[1] = record[2]
					if(output):
						print('    %s' % prectype[prechead[0]])
						print('               Resume Count : %u' % \
							record[1])
						print('                 FullResume : %u ns' % \
							record[2])
						print('              AverageResume : %u ns' % \
							record[3])
				elif(prechead[0] == 1):
					record = struct.unpack('QQ', recdata[j+4:j+prechead[1]])
					fwData[0] = record[1] - record[0]
					if(output):
						print('    %s' % prectype[prechead[0]])
						print('               SuspendStart : %u ns' % \
							record[0])
						print('                 SuspendEnd : %u ns' % \
							record[1])
						print('                SuspendTime : %u ns' % \
							fwData[0])
				j += prechead[1]
		if(output):
			print('')
		i += header[1]
	fp.close()
	return fwData

# Function: statusCheck
# Description:
#	 Verify that the requested command and options will work, and
#	 print the results to the terminal
# Output:
#	 True if the test will work, False if not
def statusCheck():
	global sysvals
	status = True

	if(sysvals.android):
		print('Checking the android system ...')
	else:
		print('Checking this system (%s)...' % platform.node())

	# check if adb is connected to a device
	if(sysvals.android):
		res = 'NO'
		out = os.popen(sysvals.adb+' get-state').read().strip()
		if(out == 'device'):
			res = 'YES'
		print('    is android device connected: %s' % res)
		if(res != 'YES'):
			print('    Please connect the device before using this tool')
			return False

	# check we have root access
	res = 'NO (No features of this tool will work!)'
	if(sysvals.android):
		out = os.popen(sysvals.adb+' shell id').read().strip()
		if('root' in out):
			res = 'YES'
	else:
		if(os.environ['USER'] == 'root'):
			res = 'YES'
	print('    have root access: %s' % res)
	if(res != 'YES'):
		if(sysvals.android):
			print('    Try running "adb root" to restart the daemon as root')
		else:
			print('    Try running this script with sudo')
		return False

	# check sysfs is mounted
	res = 'NO (No features of this tool will work!)'
	if(sysvals.android):
		out = os.popen(sysvals.adb+' shell ls '+\
			sysvals.powerfile).read().strip()
		if(out == sysvals.powerfile):
			res = 'YES'
	else:
		if(os.path.exists(sysvals.powerfile)):
			res = 'YES'
	print('    is sysfs mounted: %s' % res)
	if(res != 'YES'):
		return False

	# check target mode is a valid mode
	res = 'NO'
	modes = getModes()
	if(sysvals.suspendmode in modes):
		res = 'YES'
	else:
		status = False
	print('    is "%s" a valid power mode: %s' % (sysvals.suspendmode, res))
	if(res == 'NO'):
		print('      valid power modes are: %s' % modes)
		print('      please choose one with -m')

	# check if the tool can unlock the device
	if(sysvals.android):
		res = 'YES'
		out1 = os.popen(sysvals.adb+\
			' shell dumpsys power | grep mScreenOn').read().strip()
		out2 = os.popen(sysvals.adb+\
			' shell input').read().strip()
		if(not out1.startswith('mScreenOn') or not out2.startswith('usage')):
			res = 'NO (wake the android device up before running the test)'
		print('    can I unlock the screen: %s' % res)

	# check if ftrace is available
	res = 'NO'
	ftgood = verifyFtrace()
	if(ftgood):
		res = 'YES'
	elif(sysvals.usecallgraph):
		status = False
	print('    is ftrace supported: %s' % res)

	# what data source are we using
	res = 'DMESG'
	if(ftgood):
		sysvals.usetraceeventsonly = True
		sysvals.usetraceevents = False
		for e in sysvals.traceevents:
			check = False
			if(sysvals.android):
				out = os.popen(sysvals.adb+' shell ls -d '+\
					sysvals.epath+e).read().strip()
				if(out == sysvals.epath+e):
					check = True
			else:
				if(os.path.exists(sysvals.epath+e)):
					check = True
			if(not check):
				sysvals.usetraceeventsonly = False
			if(e == 'suspend_resume' and check):
				sysvals.usetraceevents = True
		if(sysvals.usetraceevents and sysvals.usetraceeventsonly):
			res = 'FTRACE (all trace events found)'
		elif(sysvals.usetraceevents):
			res = 'DMESG and FTRACE (suspend_resume trace event found)'
	print('    timeline data source: %s' % res)

	# check if rtcwake
	res = 'NO'
	if(sysvals.rtcpath != ''):
		res = 'YES'
	elif(sysvals.rtcwake):
		status = False
	print('    is rtcwake supported: %s' % res)

	return status

# Function: doError
# Description:
#	 generic error function for catastrphic failures
# Arguments:
#	 msg: the error message to print
#	 help: True if printHelp should be called after, False otherwise
def doError(msg, help):
	if(help == True):
		printHelp()
	print('ERROR: %s\n') % msg
	sys.exit()

# Function: doWarning
# Description:
#	 generic warning function for non-catastrophic anomalies
# Arguments:
#	 msg: the warning message to print
#	 file: If not empty, a filename to request be sent to the owner for debug
def doWarning(msg, file):
	print('/* %s */') % msg
	if(file):
		print('/* For a fix, please send this'+\
			' %s file to <todd.e.brandt@intel.com> */' % file)

# Function: rootCheck
# Description:
#	 quick check to see if we have root access
def rootCheck():
	if(os.environ['USER'] != 'root'):
		doError('This script must be run as root', False)

# Function: getArgInt
# Description:
#	 pull out an integer argument from the command line with checks
def getArgInt(name, args, min, max):
	try:
		arg = args.next()
	except:
		doError(name+': no argument supplied', True)
	try:
		val = int(arg)
	except:
		doError(name+': non-integer value given', True)
	if(val < min or val > max):
		doError(name+': value should be between %d and %d' % (min, max), True)
	return val

# Function: rerunTest
# Description:
#	 generate an output from an existing set of ftrace/dmesg logs
def rerunTest():
	global sysvals

	if(sysvals.ftracefile != ''):
		doesTraceLogHaveTraceEvents()
	if(sysvals.dmesgfile == '' and not sysvals.usetraceeventsonly):
		doError('recreating this html output '+\
			'requires a dmesg file', False)
	sysvals.setOutputFile()
	vprint('Output file: %s' % sysvals.htmlfile)
	print('PROCESSING DATA')
	if(sysvals.usetraceeventsonly):
		testruns = parseTraceLog()
	else:
		testruns = loadKernelLog()
		for data in testruns:
			parseKernelLog(data)
		if(sysvals.ftracefile != ''):
			appendIncompleteTraceLog(testruns)
	createHTML(testruns)

# Function: runTest
# Description:
#	 execute a suspend/resume, gather the logs, and generate the output
def runTest(subdir):
	global sysvals

	# prepare for the test
	if(not sysvals.android):
		initFtrace()
	else:
		initFtraceAndroid()
	sysvals.initTestOutput(subdir)

	vprint('Output files:\n    %s' % sysvals.dmesgfile)
	if(sysvals.usecallgraph or
		sysvals.usetraceevents or
		sysvals.usetraceeventsonly):
		vprint('    %s' % sysvals.ftracefile)
	vprint('    %s' % sysvals.htmlfile)

	# execute the test
	if(not sysvals.android):
		executeSuspend()
	else:
		executeAndroidSuspend()

	# analyze the data and create the html output
	print('PROCESSING DATA')
	if(sysvals.usetraceeventsonly):
		# data for kernels 3.15 or newer is entirely in ftrace
		testruns = parseTraceLog()
	else:
		# data for kernels older than 3.15 is primarily in dmesg
		testruns = loadKernelLog()
		for data in testruns:
			parseKernelLog(data)
		if(sysvals.usecallgraph or sysvals.usetraceevents):
			appendIncompleteTraceLog(testruns)
	createHTML(testruns)

# Function: runSummary
# Description:
#	 create a summary of tests in a sub-directory
def runSummary(subdir, output):
	global sysvals

	# get a list of ftrace output files
	files = []
	for dirname, dirnames, filenames in os.walk(subdir):
		for filename in filenames:
			if(re.match('.*_ftrace.txt', filename)):
				files.append("%s/%s" % (dirname, filename))

	# process the files in order and get an array of data objects
	testruns = []
	for file in sorted(files):
		if output:
			print("Test found in %s" % os.path.dirname(file))
		sysvals.ftracefile = file
		sysvals.dmesgfile = file.replace('_ftrace.txt', '_dmesg.txt')
		doesTraceLogHaveTraceEvents()
		sysvals.usecallgraph = False
		if not sysvals.usetraceeventsonly:
			if(not os.path.exists(sysvals.dmesgfile)):
				print("Skipping %s: not a valid test input" % file)
				continue
			else:
				if output:
					f = os.path.basename(sysvals.ftracefile)
					d = os.path.basename(sysvals.dmesgfile)
					print("\tInput files: %s and %s" % (f, d))
				testdata = loadKernelLog()
				data = testdata[0]
				parseKernelLog(data)
				testdata = [data]
				appendIncompleteTraceLog(testdata)
		else:
			if output:
				print("\tInput file: %s" % os.path.basename(sysvals.ftracefile))
			testdata = parseTraceLog()
			data = testdata[0]
		data.normalizeTime(data.tSuspended)
		link = file.replace(subdir+'/', '').replace('_ftrace.txt', '.html')
		data.outfile = link
		testruns.append(data)

	createHTMLSummarySimple(testruns, subdir+'/summary.html')

# Function: printHelp
# Description:
#	 print out the help text
def printHelp():
	global sysvals
	modes = getModes()

	print('')
	print('AnalyzeSuspend v%.1f' % sysvals.version)
	print('Usage: sudo analyze_suspend.py <options>')
	print('')
	print('Description:')
	print('  This tool is designed to assist kernel and OS developers in optimizing')
	print('  their linux stack\'s suspend/resume time. Using a kernel image built')
	print('  with a few extra options enabled, the tool will execute a suspend and')
	print('  capture dmesg and ftrace data until resume is complete. This data is')
	print('  transformed into a device timeline and an optional callgraph to give')
	print('  a detailed view of which devices/subsystems are taking the most')
	print('  time in suspend/resume.')
	print('')
	print('  Generates output files in subdirectory: suspend-mmddyy-HHMMSS')
	print('   HTML output:                    <hostname>_<mode>.html')
	print('   raw dmesg output:               <hostname>_<mode>_dmesg.txt')
	print('   raw ftrace output:              <hostname>_<mode>_ftrace.txt')
	print('')
	print('Options:')
	print('  [general]')
	print('    -h          Print this help text')
	print('    -v          Print the current tool version')
	print('    -verbose    Print extra information during execution and analysis')
	print('    -status     Test to see if the system is enabled to run this tool')
	print('    -modes      List available suspend modes')
	print('    -m mode     Mode to initiate for suspend %s (default: %s)') % (modes, sysvals.suspendmode)
	print('    -rtcwake t  Use rtcwake to autoresume after <t> seconds (default: disabled)')
	print('  [advanced]')
	print('    -f          Use ftrace to create device callgraphs (default: disabled)')
	print('    -filter "d1 d2 ..." Filter out all but this list of dev names')
	print('    -x2         Run two suspend/resumes back to back (default: disabled)')
	print('    -x2delay t  Minimum millisecond delay <t> between the two test runs (default: 0 ms)')
	print('    -postres t  Time after resume completion to wait for post-resume events (default: 0 S)')
	print('    -multi n d  Execute <n> consecutive tests at <d> seconds intervals. The outputs will')
	print('                be created in a new subdirectory with a summary page.')
	print('  [utilities]')
	print('    -fpdt       Print out the contents of the ACPI Firmware Performance Data Table')
	print('    -usbtopo    Print out the current USB topology with power info')
	print('    -usbauto    Enable autosuspend for all connected USB devices')
	print('  [android testing]')
	print('    -adb binary Use the given adb binary to run the test on an android device.')
	print('                The device should already be connected and with root access.')
	print('                Commands will be executed on the device using "adb shell"')
	print('  [re-analyze data from previous runs]')
	print('    -ftrace ftracefile  Create HTML output using ftrace input')
	print('    -dmesg dmesgfile    Create HTML output using dmesg (not needed for kernel >= 3.15)')
	print('    -summary directory  Create a summary of all test in this dir')
	print('')
	return True

# ----------------- MAIN --------------------
# exec start (skipped if script is loaded as library)
if __name__ == '__main__':
	cmd = ''
	cmdarg = ''
	multitest = {'run': False, 'count': 0, 'delay': 0}
	# loop through the command line arguments
	args = iter(sys.argv[1:])
	for arg in args:
		if(arg == '-m'):
			try:
				val = args.next()
			except:
				doError('No mode supplied', True)
			sysvals.suspendmode = val
		elif(arg == '-adb'):
			try:
				val = args.next()
			except:
				doError('No adb binary supplied', True)
			if(not os.path.exists(val)):
				doError('file doesnt exist: %s' % val, False)
			if(not os.access(val, os.X_OK)):
				doError('file isnt executable: %s' % val, False)
			try:
				check = os.popen(val+' version').read().strip()
			except:
				doError('adb version failed to execute', False)
			if(not re.match('Android Debug Bridge .*', check)):
				doError('adb version failed to execute', False)
			sysvals.adb = val
			sysvals.android = True
		elif(arg == '-x2'):
			if(sysvals.postresumetime > 0):
				doError('-x2 is not compatible with -postres', False)
			sysvals.execcount = 2
		elif(arg == '-x2delay'):
			sysvals.x2delay = getArgInt('-x2delay', args, 0, 60000)
		elif(arg == '-postres'):
			if(sysvals.execcount != 1):
				doError('-x2 is not compatible with -postres', False)
			sysvals.postresumetime = getArgInt('-postres', args, 0, 3600)
		elif(arg == '-f'):
			sysvals.usecallgraph = True
		elif(arg == '-modes'):
			cmd = 'modes'
		elif(arg == '-fpdt'):
			cmd = 'fpdt'
		elif(arg == '-usbtopo'):
			cmd = 'usbtopo'
		elif(arg == '-usbauto'):
			cmd = 'usbauto'
		elif(arg == '-status'):
			cmd = 'status'
		elif(arg == '-verbose'):
			sysvals.verbose = True
		elif(arg == '-v'):
			print("Version %.1f" % sysvals.version)
			sys.exit()
		elif(arg == '-rtcwake'):
			sysvals.rtcwake = True
			sysvals.rtcwaketime = getArgInt('-rtcwake', args, 0, 3600)
		elif(arg == '-multi'):
			multitest['run'] = True
			multitest['count'] = getArgInt('-multi n (exec count)', args, 2, 1000000)
			multitest['delay'] = getArgInt('-multi d (delay between tests)', args, 0, 3600)
		elif(arg == '-dmesg'):
			try:
				val = args.next()
			except:
				doError('No dmesg file supplied', True)
			sysvals.notestrun = True
			sysvals.dmesgfile = val
			if(os.path.exists(sysvals.dmesgfile) == False):
				doError('%s doesnt exist' % sysvals.dmesgfile, False)
		elif(arg == '-ftrace'):
			try:
				val = args.next()
			except:
				doError('No ftrace file supplied', True)
			sysvals.notestrun = True
			sysvals.usecallgraph = True
			sysvals.ftracefile = val
			if(os.path.exists(sysvals.ftracefile) == False):
				doError('%s doesnt exist' % sysvals.ftracefile, False)
		elif(arg == '-summary'):
			try:
				val = args.next()
			except:
				doError('No directory supplied', True)
			cmd = 'summary'
			cmdarg = val
			sysvals.notestrun = True
			if(os.path.isdir(val) == False):
				doError('%s isnt accesible' % val, False)
		elif(arg == '-filter'):
			try:
				val = args.next()
			except:
				doError('No devnames supplied', True)
			sysvals.setDeviceFilter(val)
		elif(arg == '-h'):
			printHelp()
			sys.exit()
		else:
			doError('Invalid argument: '+arg, True)

	# just run a utility command and exit
	if(cmd != ''):
		if(cmd == 'status'):
			statusCheck()
		elif(cmd == 'fpdt'):
			if(sysvals.android):
				doError('cannot read FPDT on android device', False)
			getFPDT(True)
		elif(cmd == 'usbtopo'):
			if(sysvals.android):
				doError('cannot read USB topology '+\
					'on an android device', False)
			detectUSB(True)
		elif(cmd == 'modes'):
			modes = getModes()
			print modes
		elif(cmd == 'usbauto'):
			setUSBDevicesAuto()
		elif(cmd == 'summary'):
			print("Generating a summary of folder \"%s\"" % cmdarg)
			runSummary(cmdarg, True)
		sys.exit()

	# run test on android device
	if(sysvals.android):
		if(sysvals.usecallgraph):
			doError('ftrace (-f) is not yet supported '+\
				'in the android kernel', False)
		if(sysvals.notestrun):
			doError('cannot analyze test files on the '+\
				'android device', False)

	# if instructed, re-analyze existing data files
	if(sysvals.notestrun):
		rerunTest()
		sys.exit()

	# verify that we can run a test
	if(not statusCheck()):
		print('Check FAILED, aborting the test run!')
		sys.exit()

	if multitest['run']:
		# run multiple tests in a separte subdirectory
		s = 'x%d' % multitest['count']
		subdir = datetime.now().strftime('suspend-'+s+'-%m%d%y-%H%M%S')
		os.mkdir(subdir)
		for i in range(multitest['count']):
			if(i != 0):
				print('Waiting %d seconds...' % (multitest['delay']))
				time.sleep(multitest['delay'])
			print('TEST (%d/%d) START' % (i+1, multitest['count']))
			runTest(subdir)
			print('TEST (%d/%d) COMPLETE' % (i+1, multitest['count']))
		runSummary(subdir, False)
	else:
		# run the test in the current directory
		runTest(".")