#!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0-only # # Tool for analyzing boot timing # Copyright (c) 2013, Intel Corporation. # # This program is free software; you can redistribute it and/or modify it # under the terms and conditions of the GNU General Public License, # version 2, as published by the Free Software Foundation. # # This program is distributed in the hope it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for # more details. # # Authors: # Todd Brandt # # Description: # This tool is designed to assist kernel and OS developers in optimizing # their linux stack's boot time. It creates an html representation of # the kernel boot timeline up to the start of the init process. # # ----------------- LIBRARIES -------------------- import sys import time import os import string import re import platform import shutil from datetime import datetime, timedelta from subprocess import call, Popen, PIPE import sleepgraph as aslib def pprint(msg): print(msg) sys.stdout.flush() # ----------------- CLASSES -------------------- # Class: SystemValues # Description: # A global, single-instance container used to # store system values and test parameters class SystemValues(aslib.SystemValues): title = 'BootGraph' version = '2.2' hostname = 'localhost' testtime = '' kernel = '' dmesgfile = '' ftracefile = '' htmlfile = 'bootgraph.html' testdir = '' kparams = '' result = '' useftrace = False usecallgraph = False suspendmode = 'boot' max_graph_depth = 2 graph_filter = 'do_one_initcall' reboot = False manual = False iscronjob = False timeformat = '%.6f' bootloader = 'grub' blexec = [] def __init__(self): self.kernel, self.hostname = 'unknown', platform.node() self.testtime = datetime.now().strftime('%Y-%m-%d_%H:%M:%S') if os.path.exists('/proc/version'): fp = open('/proc/version', 'r') self.kernel = self.kernelVersion(fp.read().strip()) fp.close() self.testdir = datetime.now().strftime('boot-%y%m%d-%H%M%S') def kernelVersion(self, msg): m = re.match(r'^[Ll]inux *[Vv]ersion *(?P\S*) .*', msg) if m: return m.group('v') return 'unknown' def checkFtraceKernelVersion(self): m = re.match(r'^(?P[0-9]*)\.(?P[0-9]*)\.(?P[0-9]*).*', self.kernel) if m: val = tuple(map(int, m.groups())) if val >= (4, 10, 0): return True return False def kernelParams(self): cmdline = 'initcall_debug log_buf_len=32M' if self.useftrace: if self.cpucount > 0: bs = min(self.memtotal // 2, 2*1024*1024) // self.cpucount else: bs = 131072 cmdline += ' trace_buf_size=%dK trace_clock=global '\ 'trace_options=nooverwrite,funcgraph-abstime,funcgraph-cpu,'\ 'funcgraph-duration,funcgraph-proc,funcgraph-tail,'\ 'nofuncgraph-overhead,context-info,graph-time '\ 'ftrace=function_graph '\ 'ftrace_graph_max_depth=%d '\ 'ftrace_graph_filter=%s' % \ (bs, self.max_graph_depth, self.graph_filter) return cmdline def setGraphFilter(self, val): master = self.getBootFtraceFilterFunctions() fs = '' for i in val.split(','): func = i.strip() if func == '': doError('badly formatted filter function string') if '[' in func or ']' in func: doError('loadable module functions not allowed - "%s"' % func) if ' ' in func: doError('spaces found in filter functions - "%s"' % func) if func not in master: doError('function "%s" not available for ftrace' % func) if not fs: fs = func else: fs += ','+func if not fs: doError('badly formatted filter function string') self.graph_filter = fs def getBootFtraceFilterFunctions(self): self.rootCheck(True) fp = open(self.tpath+'available_filter_functions') fulllist = fp.read().split('\n') fp.close() list = [] for i in fulllist: if not i or ' ' in i or '[' in i or ']' in i: continue list.append(i) return list def myCronJob(self, line): if '@reboot' not in line: return False if 'bootgraph' in line or 'analyze_boot.py' in line or '-cronjob' in line: return True return False def cronjobCmdString(self): cmdline = '%s -cronjob' % os.path.abspath(sys.argv[0]) args = iter(sys.argv[1:]) for arg in args: if arg in ['-h', '-v', '-cronjob', '-reboot', '-verbose']: continue elif arg in ['-o', '-dmesg', '-ftrace', '-func']: next(args) continue elif arg == '-result': cmdline += ' %s "%s"' % (arg, os.path.abspath(next(args))) continue elif arg == '-cgskip': file = self.configFile(next(args)) cmdline += ' %s "%s"' % (arg, os.path.abspath(file)) continue cmdline += ' '+arg if self.graph_filter != 'do_one_initcall': cmdline += ' -func "%s"' % self.graph_filter cmdline += ' -o "%s"' % os.path.abspath(self.testdir) return cmdline def manualRebootRequired(self): cmdline = self.kernelParams() pprint('To generate a new timeline manually, follow these steps:\n\n'\ '1. Add the CMDLINE string to your kernel command line.\n'\ '2. Reboot the system.\n'\ '3. After reboot, re-run this tool with the same arguments but no command (w/o -reboot or -manual).\n\n'\ 'CMDLINE="%s"' % cmdline) sys.exit() def blGrub(self): blcmd = '' for cmd in ['update-grub', 'grub-mkconfig', 'grub2-mkconfig']: if blcmd: break blcmd = self.getExec(cmd) if not blcmd: doError('[GRUB] missing update command') if not os.path.exists('/etc/default/grub'): doError('[GRUB] missing /etc/default/grub') if 'grub2' in blcmd: cfg = '/boot/grub2/grub.cfg' else: cfg = '/boot/grub/grub.cfg' if not os.path.exists(cfg): doError('[GRUB] missing %s' % cfg) if 'update-grub' in blcmd: self.blexec = [blcmd] else: self.blexec = [blcmd, '-o', cfg] def getBootLoader(self): if self.bootloader == 'grub': self.blGrub() else: doError('unknown boot loader: %s' % self.bootloader) def writeDatafileHeader(self, filename): self.kparams = open('/proc/cmdline', 'r').read().strip() fp = open(filename, 'w') fp.write(self.teststamp+'\n') fp.write(self.sysstamp+'\n') fp.write('# command | %s\n' % self.cmdline) fp.write('# kparams | %s\n' % self.kparams) fp.close() sysvals = SystemValues() # Class: Data # Description: # The primary container for test data. class Data(aslib.Data): dmesg = {} # root data structure start = 0.0 # test start end = 0.0 # test end dmesgtext = [] # dmesg text file in memory testnumber = 0 idstr = '' html_device_id = 0 valid = False tUserMode = 0.0 boottime = '' phases = ['kernel', 'user'] do_one_initcall = False def __init__(self, num): self.testnumber = num self.idstr = 'a' self.dmesgtext = [] self.dmesg = { 'kernel': {'list': dict(), 'start': -1.0, 'end': -1.0, 'row': 0, 'order': 0, 'color': 'linear-gradient(to bottom, #fff, #bcf)'}, 'user': {'list': dict(), 'start': -1.0, 'end': -1.0, 'row': 0, 'order': 1, 'color': '#fff'} } def deviceTopology(self): return '' def newAction(self, phase, name, pid, start, end, ret, ulen): # 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 i = 2 origname = name while(name in list): name = '%s[%d]' % (origname, i) i += 1 list[name] = {'name': name, 'start': start, 'end': end, 'pid': pid, 'length': length, 'row': 0, 'id': devid, 'ret': ret, 'ulen': ulen } return name def deviceMatch(self, pid, cg): if cg.end - cg.start == 0: return '' for p in data.phases: list = self.dmesg[p]['list'] for devname in list: dev = list[devname] if pid != dev['pid']: continue if cg.name == 'do_one_initcall': if(cg.start <= dev['start'] and cg.end >= dev['end'] and dev['length'] > 0): dev['ftrace'] = cg self.do_one_initcall = True return devname else: if(cg.start > dev['start'] and cg.end < dev['end']): if 'ftraces' not in dev: dev['ftraces'] = [] dev['ftraces'].append(cg) return devname return '' def printDetails(self): sysvals.vprint('Timeline Details:') sysvals.vprint(' Host: %s' % sysvals.hostname) sysvals.vprint(' Kernel: %s' % sysvals.kernel) sysvals.vprint(' Test time: %s' % sysvals.testtime) sysvals.vprint(' Boot time: %s' % self.boottime) for phase in self.phases: dc = len(self.dmesg[phase]['list']) sysvals.vprint('%9s mode: %.3f - %.3f (%d initcalls)' % (phase, self.dmesg[phase]['start']*1000, self.dmesg[phase]['end']*1000, dc)) # ----------------- FUNCTIONS -------------------- # Function: parseKernelLog # Description: # parse a kernel log for boot data def parseKernelLog(): sysvals.vprint('Analyzing the dmesg data (%s)...' % \ os.path.basename(sysvals.dmesgfile)) phase = 'kernel' data = Data(0) data.dmesg['kernel']['start'] = data.start = ktime = 0.0 sysvals.stamp = { 'time': datetime.now().strftime('%B %d %Y, %I:%M:%S %p'), 'host': sysvals.hostname, 'mode': 'boot', 'kernel': ''} tp = aslib.TestProps() devtemp = dict() if(sysvals.dmesgfile): lf = open(sysvals.dmesgfile, 'rb') else: lf = Popen('dmesg', stdout=PIPE).stdout for line in lf: line = aslib.ascii(line).replace('\r\n', '') # grab the stamp and sysinfo if re.match(tp.stampfmt, line): tp.stamp = line continue elif re.match(tp.sysinfofmt, line): tp.sysinfo = line continue elif re.match(tp.cmdlinefmt, line): tp.cmdline = line continue elif re.match(tp.kparamsfmt, line): tp.kparams = line continue idx = line.find('[') if idx > 1: line = line[idx:] m = re.match(r'[ \t]*(\[ *)(?P[0-9\.]*)(\]) (?P.*)', line) if(not m): continue ktime = float(m.group('ktime')) if(ktime > 120): break msg = m.group('msg') data.dmesgtext.append(line) if(ktime == 0.0 and re.match(r'^Linux version .*', msg)): if(not sysvals.stamp['kernel']): sysvals.stamp['kernel'] = sysvals.kernelVersion(msg) continue m = re.match(r'.* setting system clock to (?P[0-9\-]*)[ A-Z](?P[0-9:]*) UTC.*', msg) if(m): bt = datetime.strptime(m.group('d')+' '+m.group('t'), '%Y-%m-%d %H:%M:%S') bt = bt - timedelta(seconds=int(ktime)) data.boottime = bt.strftime('%Y-%m-%d_%H:%M:%S') sysvals.stamp['time'] = bt.strftime('%B %d %Y, %I:%M:%S %p') continue m = re.match(r'^calling *(?P.*)\+.* @ (?P

[0-9]*)', msg) if(m): func = m.group('f') pid = int(m.group('p')) devtemp[func] = (ktime, pid) continue m = re.match(r'^initcall *(?P.*)\+.* returned (?P.*) after (?P.*) usecs', msg) if(m): data.valid = True data.end = ktime f, r, t = m.group('f', 'r', 't') if(f in devtemp): start, pid = devtemp[f] data.newAction(phase, f, pid, start, ktime, int(r), int(t)) del devtemp[f] continue if(re.match(r'^Freeing unused kernel .*', msg)): data.tUserMode = ktime data.dmesg['kernel']['end'] = ktime data.dmesg['user']['start'] = ktime phase = 'user' if tp.stamp: sysvals.stamp = 0 tp.parseStamp(data, sysvals) data.dmesg['user']['end'] = data.end lf.close() return data # Function: parseTraceLog # Description: # Check if trace is available and copy to a temp file def parseTraceLog(data): sysvals.vprint('Analyzing the ftrace data (%s)...' % \ os.path.basename(sysvals.ftracefile)) # if available, calculate cgfilter allowable ranges cgfilter = [] if len(sysvals.cgfilter) > 0: for p in data.phases: list = data.dmesg[p]['list'] for i in sysvals.cgfilter: if i in list: cgfilter.append([list[i]['start']-0.0001, list[i]['end']+0.0001]) # parse the trace log ftemp = dict() tp = aslib.TestProps() tp.setTracerType('function_graph') tf = open(sysvals.ftracefile, 'r') for line in tf: if line[0] == '#': continue m = re.match(tp.ftrace_line_fmt, line.strip()) if(not m): continue m_time, m_proc, m_pid, m_msg, m_dur = \ m.group('time', 'proc', 'pid', 'msg', 'dur') t = float(m_time) if len(cgfilter) > 0: allow = False for r in cgfilter: if t >= r[0] and t < r[1]: allow = True break if not allow: continue if t > data.end: break if(m_time and m_pid and m_msg): t = aslib.FTraceLine(m_time, m_msg, m_dur) pid = int(m_pid) else: continue if t.fevent or t.fkprobe: continue key = (m_proc, pid) if(key not in ftemp): ftemp[key] = [] ftemp[key].append(aslib.FTraceCallGraph(pid, sysvals)) cg = ftemp[key][-1] res = cg.addLine(t) if(res != 0): ftemp[key].append(aslib.FTraceCallGraph(pid, sysvals)) if(res == -1): ftemp[key][-1].addLine(t) tf.close() # add the callgraph data to the device hierarchy for key in ftemp: proc, pid = key for cg in ftemp[key]: if len(cg.list) < 1 or cg.invalid or (cg.end - cg.start == 0): continue if(not cg.postProcess()): pprint('Sanity check failed for %s-%d' % (proc, pid)) continue # match cg data to devices devname = data.deviceMatch(pid, cg) if not devname: kind = 'Orphan' if cg.partial: kind = 'Partial' sysvals.vprint('%s callgraph found for %s %s-%d [%f - %f]' %\ (kind, cg.name, proc, pid, cg.start, cg.end)) elif len(cg.list) > 1000000: pprint('WARNING: the callgraph found for %s is massive! (%d lines)' %\ (devname, len(cg.list))) # Function: retrieveLogs # Description: # Create copies of dmesg and/or ftrace for later processing def retrieveLogs(): # check ftrace is configured first if sysvals.useftrace: tracer = sysvals.fgetVal('current_tracer').strip() if tracer != 'function_graph': doError('ftrace not configured for a boot callgraph') # create the folder and get dmesg sysvals.systemInfo(aslib.dmidecode(sysvals.mempath)) sysvals.initTestOutput('boot') sysvals.writeDatafileHeader(sysvals.dmesgfile) call('dmesg >> '+sysvals.dmesgfile, shell=True) if not sysvals.useftrace: return # get ftrace sysvals.writeDatafileHeader(sysvals.ftracefile) call('cat '+sysvals.tpath+'trace >> '+sysvals.ftracefile, shell=True) # Function: colorForName # Description: # Generate a repeatable color from a list for a given name def colorForName(name): list = [ ('c1', '#ec9999'), ('c2', '#ffc1a6'), ('c3', '#fff0a6'), ('c4', '#adf199'), ('c5', '#9fadea'), ('c6', '#a699c1'), ('c7', '#ad99b4'), ('c8', '#eaffea'), ('c9', '#dcecfb'), ('c10', '#ffffea') ] i = 0 total = 0 count = len(list) while i < len(name): total += ord(name[i]) i += 1 return list[total % count] def cgOverview(cg, minlen): stats = dict() large = [] for l in cg.list: if l.fcall and l.depth == 1: if l.length >= minlen: large.append(l) if l.name not in stats: stats[l.name] = [0, 0.0] stats[l.name][0] += (l.length * 1000.0) stats[l.name][1] += 1 return (large, stats) # Function: createBootGraph # 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 createBootGraph(data): # html function templates html_srccall = '

{0}
\n' html_timetotal = '\n'\ ''\ ''\ '\n
Init process starts @ {0} msLast initcall ends @ {1} ms
\n' # device timeline devtl = aslib.Timeline(100, 20) # write the test title and general info header devtl.createHeader(sysvals, sysvals.stamp) # Generate the header for this timeline t0 = data.start tMax = data.end tTotal = tMax - t0 if(tTotal == 0): pprint('ERROR: No timeline data') return False user_mode = '%.0f'%(data.tUserMode*1000) last_init = '%.0f'%(tTotal*1000) devtl.html += html_timetotal.format(user_mode, last_init) # determine the maximum number of rows we need to draw devlist = [] for p in data.phases: list = data.dmesg[p]['list'] for devname in list: d = aslib.DevItem(0, p, list[devname]) devlist.append(d) devtl.getPhaseRows(devlist, 0, 'start') devtl.calcTotalRows() # draw the timeline background devtl.createZoomBox() devtl.html += devtl.html_tblock.format('boot', '0', '100', devtl.scaleH) for p in data.phases: phase = data.dmesg[p] length = phase['end']-phase['start'] left = '%.3f' % (((phase['start']-t0)*100.0)/tTotal) width = '%.3f' % ((length*100.0)/tTotal) devtl.html += devtl.html_phase.format(left, width, \ '%.3f'%devtl.scaleH, '%.3f'%devtl.bodyH, \ phase['color'], '') # draw the device timeline num = 0 devstats = dict() for phase in data.phases: list = data.dmesg[phase]['list'] for devname in sorted(list): cls, color = colorForName(devname) dev = list[devname] info = '@|%.3f|%.3f|%.3f|%d' % (dev['start']*1000.0, dev['end']*1000.0, dev['ulen']/1000.0, dev['ret']) devstats[dev['id']] = {'info':info} dev['color'] = color height = devtl.phaseRowHeight(0, phase, dev['row']) top = '%.6f' % ((dev['row']*height) + devtl.scaleH) left = '%.6f' % (((dev['start']-t0)*100)/tTotal) width = '%.6f' % (((dev['end']-dev['start'])*100)/tTotal) length = ' (%0.3f ms) ' % ((dev['end']-dev['start'])*1000) devtl.html += devtl.html_device.format(dev['id'], devname+length+phase+'_mode', left, top, '%.3f'%height, width, devname, ' '+cls, '') rowtop = devtl.phaseRowTop(0, phase, dev['row']) height = '%.6f' % (devtl.rowH / 2) top = '%.6f' % (rowtop + devtl.scaleH + (devtl.rowH / 2)) if data.do_one_initcall: if('ftrace' not in dev): continue cg = dev['ftrace'] large, stats = cgOverview(cg, 0.001) devstats[dev['id']]['fstat'] = stats for l in large: left = '%f' % (((l.time-t0)*100)/tTotal) width = '%f' % (l.length*100/tTotal) title = '%s (%0.3fms)' % (l.name, l.length * 1000.0) devtl.html += html_srccall.format(l.name, left, top, height, width, title, 'x%d'%num) num += 1 continue if('ftraces' not in dev): continue for cg in dev['ftraces']: left = '%f' % (((cg.start-t0)*100)/tTotal) width = '%f' % ((cg.end-cg.start)*100/tTotal) cglen = (cg.end - cg.start) * 1000.0 title = '%s (%0.3fms)' % (cg.name, cglen) cg.id = 'x%d' % num devtl.html += html_srccall.format(cg.name, left, top, height, width, title, dev['id']+cg.id) num += 1 # draw the time scale, try to make the number of labels readable devtl.createTimeScale(t0, tMax, tTotal, 'boot') devtl.html += '\n' # timeline is finished devtl.html += '\n\n' # draw a legend which describes the phases by color devtl.html += '
\n' pdelta = 20.0 pmargin = 36.0 for phase in data.phases: order = '%.2f' % ((data.dmesg[phase]['order'] * pdelta) + pmargin) devtl.html += devtl.html_legend.format(order, \ data.dmesg[phase]['color'], phase+'_mode', phase[0]) devtl.html += '
\n' hf = open(sysvals.htmlfile, 'w') # add the css extra = '\ .c1 {background:rgba(209,0,0,0.4);}\n\ .c2 {background:rgba(255,102,34,0.4);}\n\ .c3 {background:rgba(255,218,33,0.4);}\n\ .c4 {background:rgba(51,221,0,0.4);}\n\ .c5 {background:rgba(17,51,204,0.4);}\n\ .c6 {background:rgba(34,0,102,0.4);}\n\ .c7 {background:rgba(51,0,68,0.4);}\n\ .c8 {background:rgba(204,255,204,0.4);}\n\ .c9 {background:rgba(169,208,245,0.4);}\n\ .c10 {background:rgba(255,255,204,0.4);}\n\ .vt {transform:rotate(-60deg);transform-origin:0 0;}\n\ table.fstat {table-layout:fixed;padding:150px 15px 0 0;font-size:10px;column-width:30px;}\n\ .fstat th {width:55px;}\n\ .fstat td {text-align:left;width:35px;}\n\ .srccall {position:absolute;font-size:10px;z-index:7;overflow:hidden;color:black;text-align:center;white-space:nowrap;border-radius:5px;border:1px solid black;background:linear-gradient(to bottom right,#CCC,#969696);}\n\ .srccall:hover {color:white;font-weight:bold;border:1px solid white;}\n' aslib.addCSS(hf, sysvals, 1, False, extra) # write the device timeline hf.write(devtl.html) # add boot specific html statinfo = 'var devstats = {\n' for n in sorted(devstats): statinfo += '\t"%s": [\n\t\t"%s",\n' % (n, devstats[n]['info']) if 'fstat' in devstats[n]: funcs = devstats[n]['fstat'] for f in sorted(funcs, key=lambda k:(funcs[k], k), reverse=True): if funcs[f][0] < 0.01 and len(funcs) > 10: break statinfo += '\t\t"%f|%s|%d",\n' % (funcs[f][0], f, funcs[f][1]) statinfo += '\t],\n' statinfo += '};\n' html = \ '
\n'\ '\n'\ '\n' hf.write(html) # add the callgraph html if(sysvals.usecallgraph): aslib.addCallgraphs(sysvals, hf, data) # add the test log as a hidden div if sysvals.testlog and sysvals.logmsg: hf.write('\n') # add the dmesg log as a hidden div if sysvals.dmesglog: hf.write('\n') # write the footer and close aslib.addScriptCode(hf, [data]) hf.write('\n\n') hf.close() return True # Function: updateCron # Description: # (restore=False) Set the tool to run automatically on reboot # (restore=True) Restore the original crontab def updateCron(restore=False): if not restore: sysvals.rootUser(True) crondir = '/var/spool/cron/crontabs/' if not os.path.exists(crondir): crondir = '/var/spool/cron/' if not os.path.exists(crondir): doError('%s not found' % crondir) cronfile = crondir+'root' backfile = crondir+'root-analyze_boot-backup' cmd = sysvals.getExec('crontab') if not cmd: doError('crontab not found') # on restore: move the backup cron back into place if restore: if os.path.exists(backfile): shutil.move(backfile, cronfile) call([cmd, cronfile]) return # backup current cron and install new one with reboot if os.path.exists(cronfile): shutil.move(cronfile, backfile) else: fp = open(backfile, 'w') fp.close() res = -1 try: fp = open(backfile, 'r') op = open(cronfile, 'w') for line in fp: if not sysvals.myCronJob(line): op.write(line) continue fp.close() op.write('@reboot python %s\n' % sysvals.cronjobCmdString()) op.close() res = call([cmd, cronfile]) except Exception as e: pprint('Exception: %s' % str(e)) shutil.move(backfile, cronfile) res = -1 if res != 0: doError('crontab failed') # Function: updateGrub # Description: # update grub.cfg for all kernels with our parameters def updateGrub(restore=False): # call update-grub on restore if restore: try: call(sysvals.blexec, stderr=PIPE, stdout=PIPE, env={'PATH': '.:/sbin:/usr/sbin:/usr/bin:/sbin:/bin'}) except Exception as e: pprint('Exception: %s\n' % str(e)) return # extract the option and create a grub config without it sysvals.rootUser(True) tgtopt = 'GRUB_CMDLINE_LINUX_DEFAULT' cmdline = '' grubfile = '/etc/default/grub' tempfile = '/etc/default/grub.analyze_boot' shutil.move(grubfile, tempfile) res = -1 try: fp = open(tempfile, 'r') op = open(grubfile, 'w') cont = False for line in fp: line = line.strip() if len(line) == 0 or line[0] == '#': continue opt = line.split('=')[0].strip() if opt == tgtopt: cmdline = line.split('=', 1)[1].strip('\\') if line[-1] == '\\': cont = True elif cont: cmdline += line.strip('\\') if line[-1] != '\\': cont = False else: op.write('%s\n' % line) fp.close() # if the target option value is in quotes, strip them sp = '"' val = cmdline.strip() if val and (val[0] == '\'' or val[0] == '"'): sp = val[0] val = val.strip(sp) cmdline = val # append our cmd line options if len(cmdline) > 0: cmdline += ' ' cmdline += sysvals.kernelParams() # write out the updated target option op.write('\n%s=%s%s%s\n' % (tgtopt, sp, cmdline, sp)) op.close() res = call(sysvals.blexec) os.remove(grubfile) except Exception as e: pprint('Exception: %s' % str(e)) res = -1 # cleanup shutil.move(tempfile, grubfile) if res != 0: doError('update grub failed') # Function: updateKernelParams # Description: # update boot conf for all kernels with our parameters def updateKernelParams(restore=False): # find the boot loader sysvals.getBootLoader() if sysvals.bootloader == 'grub': updateGrub(restore) # 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=False): if help == True: printHelp() pprint('ERROR: %s\n' % msg) sysvals.outputResult({'error':msg}) sys.exit() # Function: printHelp # Description: # print out the help text def printHelp(): pprint('\n%s v%s\n'\ 'Usage: bootgraph \n'\ '\n'\ 'Description:\n'\ ' This tool reads in a dmesg log of linux kernel boot and\n'\ ' creates an html representation of the boot timeline up to\n'\ ' the start of the init process.\n'\ '\n'\ ' If no specific command is given the tool reads the current dmesg\n'\ ' and/or ftrace log and creates a timeline\n'\ '\n'\ ' Generates output files in subdirectory: boot-yymmdd-HHMMSS\n'\ ' HTML output: _boot.html\n'\ ' raw dmesg output: _boot_dmesg.txt\n'\ ' raw ftrace output: _boot_ftrace.txt\n'\ '\n'\ 'Options:\n'\ ' -h Print this help text\n'\ ' -v Print the current tool version\n'\ ' -verbose Print extra information during execution and analysis\n'\ ' -addlogs Add the dmesg log to the html output\n'\ ' -result fn Export a results table to a text file for parsing.\n'\ ' -o name Overrides the output subdirectory name when running a new test\n'\ ' default: boot-{date}-{time}\n'\ ' [advanced]\n'\ ' -fstat Use ftrace to add function detail and statistics (default: disabled)\n'\ ' -f/-callgraph Add callgraph detail, can be very large (default: disabled)\n'\ ' -maxdepth N limit the callgraph data to N call levels (default: 2)\n'\ ' -mincg ms Discard all callgraphs shorter than ms milliseconds (e.g. 0.001 for us)\n'\ ' -timeprec N Number of significant digits in timestamps (0:S, 3:ms, [6:us])\n'\ ' -expandcg pre-expand the callgraph data in the html output (default: disabled)\n'\ ' -func list Limit ftrace to comma-delimited list of functions (default: do_one_initcall)\n'\ ' -cgfilter S Filter the callgraph output in the timeline\n'\ ' -cgskip file Callgraph functions to skip, off to disable (default: cgskip.txt)\n'\ ' -bl name Use the following boot loader for kernel params (default: grub)\n'\ ' -reboot Reboot the machine automatically and generate a new timeline\n'\ ' -manual Show the steps to generate a new timeline manually (used with -reboot)\n'\ '\n'\ 'Other commands:\n'\ ' -flistall Print all functions capable of being captured in ftrace\n'\ ' -sysinfo Print out system info extracted from BIOS\n'\ ' -which exec Print an executable path, should function even without PATH\n'\ ' [redo]\n'\ ' -dmesg file Create HTML output using dmesg input (used with -ftrace)\n'\ ' -ftrace file Create HTML output using ftrace input (used with -dmesg)\n'\ '' % (sysvals.title, sysvals.version)) return True # ----------------- MAIN -------------------- # exec start (skipped if script is loaded as library) if __name__ == '__main__': # loop through the command line arguments cmd = '' testrun = True switchoff = ['disable', 'off', 'false', '0'] simplecmds = ['-sysinfo', '-kpupdate', '-flistall', '-checkbl'] cgskip = '' if '-f' in sys.argv: cgskip = sysvals.configFile('cgskip.txt') args = iter(sys.argv[1:]) mdset = False for arg in args: if(arg == '-h'): printHelp() sys.exit() elif(arg == '-v'): pprint("Version %s" % sysvals.version) sys.exit() elif(arg == '-verbose'): sysvals.verbose = True elif(arg in simplecmds): cmd = arg[1:] elif(arg == '-fstat'): sysvals.useftrace = True elif(arg == '-callgraph' or arg == '-f'): sysvals.useftrace = True sysvals.usecallgraph = True elif(arg == '-cgdump'): sysvals.cgdump = True elif(arg == '-mincg'): sysvals.mincglen = aslib.getArgFloat('-mincg', args, 0.0, 10000.0) elif(arg == '-cgfilter'): try: val = next(args) except: doError('No callgraph functions supplied', True) sysvals.setCallgraphFilter(val) elif(arg == '-cgskip'): try: val = next(args) except: doError('No file supplied', True) if val.lower() in switchoff: cgskip = '' else: cgskip = sysvals.configFile(val) if(not cgskip): doError('%s does not exist' % cgskip) elif(arg == '-bl'): try: val = next(args) except: doError('No boot loader name supplied', True) if val.lower() not in ['grub']: doError('Unknown boot loader: %s' % val, True) sysvals.bootloader = val.lower() elif(arg == '-timeprec'): sysvals.setPrecision(aslib.getArgInt('-timeprec', args, 0, 6)) elif(arg == '-maxdepth'): mdset = True sysvals.max_graph_depth = aslib.getArgInt('-maxdepth', args, 0, 1000) elif(arg == '-func'): try: val = next(args) except: doError('No filter functions supplied', True) sysvals.useftrace = True sysvals.usecallgraph = True sysvals.rootCheck(True) sysvals.setGraphFilter(val) elif(arg == '-ftrace'): try: val = next(args) except: doError('No ftrace file supplied', True) if(os.path.exists(val) == False): doError('%s does not exist' % val) testrun = False sysvals.ftracefile = val elif(arg == '-addlogs'): sysvals.dmesglog = True elif(arg == '-expandcg'): sysvals.cgexp = True elif(arg == '-dmesg'): try: val = next(args) except: doError('No dmesg file supplied', True) if(os.path.exists(val) == False): doError('%s does not exist' % val) testrun = False sysvals.dmesgfile = val elif(arg == '-o'): try: val = next(args) except: doError('No subdirectory name supplied', True) sysvals.testdir = sysvals.setOutputFolder(val) elif(arg == '-result'): try: val = next(args) except: doError('No result file supplied', True) sysvals.result = val elif(arg == '-reboot'): sysvals.reboot = True elif(arg == '-manual'): sysvals.reboot = True sysvals.manual = True # remaining options are only for cron job use elif(arg == '-cronjob'): sysvals.iscronjob = True elif(arg == '-which'): try: val = next(args) except: doError('No executable supplied', True) out = sysvals.getExec(val) if not out: print('%s not found' % val) sys.exit(1) print(out) sys.exit(0) else: doError('Invalid argument: '+arg, True) # compatibility errors and access checks if(sysvals.iscronjob and (sysvals.reboot or \ sysvals.dmesgfile or sysvals.ftracefile or cmd)): doError('-cronjob is meant for batch purposes only') if(sysvals.reboot and (sysvals.dmesgfile or sysvals.ftracefile)): doError('-reboot and -dmesg/-ftrace are incompatible') if cmd or sysvals.reboot or sysvals.iscronjob or testrun: sysvals.rootCheck(True) if (testrun and sysvals.useftrace) or cmd == 'flistall': if not sysvals.verifyFtrace(): doError('Ftrace is not properly enabled') # run utility commands sysvals.cpuInfo() if cmd != '': if cmd == 'kpupdate': updateKernelParams() elif cmd == 'flistall': for f in sysvals.getBootFtraceFilterFunctions(): print(f) elif cmd == 'checkbl': sysvals.getBootLoader() pprint('Boot Loader: %s\n%s' % (sysvals.bootloader, sysvals.blexec)) elif(cmd == 'sysinfo'): sysvals.printSystemInfo(True) sys.exit() # reboot: update grub, setup a cronjob, and reboot if sysvals.reboot: if (sysvals.useftrace or sysvals.usecallgraph) and \ not sysvals.checkFtraceKernelVersion(): doError('Ftrace functionality requires kernel v4.10 or newer') if not sysvals.manual: updateKernelParams() updateCron() call('reboot') else: sysvals.manualRebootRequired() sys.exit() if sysvals.usecallgraph and cgskip: sysvals.vprint('Using cgskip file: %s' % cgskip) sysvals.setCallgraphBlacklist(cgskip) # cronjob: remove the cronjob, grub changes, and disable ftrace if sysvals.iscronjob: updateCron(True) updateKernelParams(True) try: sysvals.fsetVal('0', 'tracing_on') except: pass # testrun: generate copies of the logs if testrun: retrieveLogs() else: sysvals.setOutputFile() # process the log data if sysvals.dmesgfile: if not mdset: sysvals.max_graph_depth = 0 data = parseKernelLog() if(not data.valid): doError('No initcall data found in %s' % sysvals.dmesgfile) if sysvals.useftrace and sysvals.ftracefile: parseTraceLog(data) if sysvals.cgdump: data.debugPrint() sys.exit() else: doError('dmesg file required') sysvals.vprint('Creating the html timeline (%s)...' % sysvals.htmlfile) sysvals.vprint('Command:\n %s' % sysvals.cmdline) sysvals.vprint('Kernel parameters:\n %s' % sysvals.kparams) data.printDetails() createBootGraph(data) # if running as root, change output dir owner to sudo_user if testrun and os.path.isdir(sysvals.testdir) and \ os.getuid() == 0 and 'SUDO_USER' in os.environ: cmd = 'chown -R {0}:{0} {1} > /dev/null 2>&1' call(cmd.format(os.environ['SUDO_USER'], sysvals.testdir), shell=True) sysvals.stamp['boot'] = (data.tUserMode - data.start) * 1000 sysvals.stamp['lastinit'] = data.end * 1000 sysvals.outputResult(sysvals.stamp)