LTTngManual.html

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   4   <title>Linux Trace Toolkit Next Generation Manual</title>
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   7
   8 <h1>Linux Trace Toolkit Next Generation Manual</h1>
   9
  10 Author : Mathieu Desnoyers, September 2005<br>
  11 Last update : September 3, 2010<br>
  12 (originally known as the LTTng QUICKSTART guide)
  13
  14 <h2>Table of Contents</h2>
  15
  16 <ul>
  17 <li><a href="#intro" name="TOCintro">Introduction</a></li>
  18 <ul>
  19 <li><a href="#licenses" name="TOClicenses">Licenses</a></li>
  20 <ul>
  21 <li><a href="#arch" name="TOCarch">Supported architectures</a></li>
  22 </ul>
  23
  24 <li><a href="#section1" name="TOCsection1">Installing LTTng and LTTV from
  25 sources</a></li>
  26 <ul>
  27 <li><a href="#prerequisites" name="TOCprerequisites">Prerequisistes</li>
  28 <li><a href="#getlttng" name="TOCgetlttng">Getting the LTTng packages</li>
  29 <li><a href="#getlttngsrc" name="TOCgetlttngsrc">Getting the LTTng kernel sources</li>
  30 <li><a href="#installlttng" name="TOCinstalllttng">Installing a LTTng kernel</li>
  31 <li><a href="#editconfig" name="TOCeditconfig">Editing the system wide
  32 configuration</a>
  33 <li><a href="#getlttctl" name="TOCgetlttctl">Getting and installing the
  34 ltt-control package</li>
  35 <li><a href="#userspacetracing" name="TOCuserspacetracing">Userspace Tracing</li>
  36 <li><a href="#getlttv" name="TOCgetlttv">Getting and installing the LTTV package</ul>
  37
  38 <li><a href="#section2" name="TOCsection2">Using LTTng and LTTV</a></li>
  39 <ul>
  40 <li><a href="#uselttvgui" name="TOCuselttvgui">Use graphical LTTV to control
  41 tracing and analyse traces</a></li>
  42 <li><a href="#uselttngtext" name="TOCuselttngtext">Use text mode LTTng to
  43 control tracing</a></li>
  44 <li><a href="#uselttvtext" name="TOCuselttvtext">Use text mode LTTV</a></li>
  45 <li><a href="#hybrid" name="TOChybrid">Tracing in "Hybrid" mode</a></li>
  46 <li><a href="#flight" name="TOCflight">Tracing in flight recorder mode</a></li>
  47 </ul>
  48
  49 <li><a href="#section3" name="TOCsection3">Adding kernel and user-space
  50 instrumentation</a>
  51 <ul>
  52 <li><a href="#kerneltp" name="TOCkerneltp">Adding kernel instrumentation</a></li>
  53 <li><a href="#usertp" name="TOCusertp">Adding userspace instrumentation</a></li>
  54 </ul>
  55
  56 <li><a href="#section4" name="TOCsection4">Creating Debian and RPM packages
  57 from LTTV</a></li>
  58 <ul>
  59 <li><a href="#pkgdebian" name="TOCpkgdebian">Create custom LTTV Debian
  60 <li><a href="#pkglttng" name="TOCpkglttng">Create custom LTTng packages</a></li>
  61 </ul>
  62
  63 </ul>
  64
  65 <hr />
  66
  67 <h2><a href="#TOCintro" name="intro">Introduction</a></h2>
  68 <p>
  69 This document is made of five parts : the first one explains how
  70 to install LTTng and LTTV from sources, the second one describes the steps
  71 to follow to trace a system and view it. The third part explains
  72 briefly how to add a new trace point to the kernel and to user space
  73 applications. The fourth and last part explains how to create Debian or RPM
  74 packages from the LTTng and LTTV sources.
  75 <p>
  76 These operations are made for installing the LTTng 0.86 tracer on a linux 2.6.X
  77 kernel. You will also find instructions for installation of LTTV 0.12.x : the
  78 Linux Trace Toolkit Viewer.
  79 To see the list of compatibilities between the LTTng kernel patchset, LTTng
  80 modules, ltt-control, LTTV, please refer to :
  81 <a
  82 href="http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=doc/developer/lttng-lttv-compatibility.html;hb=HEAD">LTTng+LTTV versions compatibility</a>
  83
  84 The ongoing work had the Linux Kernel Markers integrated in the mainline Linux
  85 kernel since Linux 2.6.24 and the Tracepoints since 2.6.28. In its current
  86 state, the lttng patchset is necessary to have the trace clocksource, the
  87 instrumentation and the LTTng high-speed data extraction mechanism added to the
  88 kernel.
  89
  90 <br>
  91 <br>
  92 <h3><a href="#TOClicenses" name="licenses">Licenses</a></h3>
  93 <p>
  94 LTTng, UST and LTTV are developed by an open community. LTTng is released under
  95 a dual Gnu LGPLv2.1/GPLv2 license, except for very few kernel-specific files
  96 which are derived work from the Linux kernel.
  97 <p>
  98 LTTV is available under the Gnu GPLv2. The low-level LTTV trace reading library
  99 is released under Gnu LGPLv2.1.
 100 <p>
 101 The Eclipse LTTng trace analysis tool is released under the EPL and uses the
 102 LTTV trace reading library (LGPLv2.1).
 103 <p>
 104 The UST (Userspace Tracing) and the Userspace RCU libraries are released under
 105 the LGPLv2.1 license, which allows linking with non-GPL (BSD, proprietary...)
 106 applications. The associated headers are released under MIT-style/BSD-style
 107 licenses.
 108 <p>
 109 Please refer to each particular file licensing for details.
 110
 111 <h3><a href="#TOCarch" name="arch">Supported architectures</a></h3>
 112 LTTng :<br>
 113 <br>
 114 <li> x86 32/64 bits
 115 <li> PowerPC 32 and 64 bits
 116 <li> ARMv7 OMAP3
 117 <li> Other ARM (with limited timestamping precision, e.g. 1HZ. Need
 118 architecture-specific support for better precision)
 119 <li> MIPS
 120 <li> sh (partial architecture-specific instrumentation)
 121 <li> sparc64 (partial architecture-specific instrumentation)
 122 <li> s390 (partial architecture-specific instrumentation)
 123 <li> Other architectures supported without architecture-specific instrumentation
 124 and with low-resolution timestamps.<br>
 125 <br>
 126 <br>
 127 LTTV :<br>
 128 <br>
 129 <li> Intel 32/64 bits
 130 <li> PowerPC 32 and 64 bits
 131 <li> Possibly others. Takes care of endianness and type size difference between
 132 the LTTng traces and the LTTV analysis tool.
 133
 134 <hr />
 135
 136
 137 <h2><a href="#TOCsection1" name="section1">Installation from sources</a></h2>
 138 <p>
 139
 140 <h3><a href="#TOCprerequisites" name="prerequisites">Prerequisites</a></h3>
 141 <ul>
 142 <p>
 143 Tools needed to follow the package download steps :
 144
 145 <li>wget
 146 <li>bzip2
 147 <li>gzip
 148 <li>tar
 149
 150 <p>
 151 You have to install the standard development libraries and programs necessary
 152 to compile a kernel :
 153
 154 <PRE>
 155 (from Documentation/Changes in the Linux kernel tree)
 156 Gnu C                2.95.3                # gcc --version
 157 Gnu make             3.79.1                # make --version
 158 binutils             2.12                  # ld -v
 159 util-linux           2.10o                 # fdformat --version
 160 module-init-tools    0.9.10                # depmod -V
 161 </PRE>
 162
 163 <p>
 164 You might also want to have libncurses5 to have the text mode kernel
 165 configuration menu, but there are alternatives.
 166
 167 <p>
 168 Prerequisites for LTTV 0.x.x installation are :
 169
 170 <PRE>
 171 gcc 3.2 or better
 172 gtk 2.4 or better development libraries
 173   (Debian : libgtk2.0, libgtk2.0-dev)
 174   (Fedora : gtk2, gtk2-devel)
 175   note : For Fedora users : this might require at least core 3 from Fedora,
 176   or you might have to compile your own GTK2 library.
 177 glib 2.16 or better development libraries
 178   (Debian : libglib2.0-0, libglib2.0-dev)
 179   (Fedora : glib2, glib2-devel)
 180 libpopt development libraries
 181   (Debian : libpopt0, libpopt-dev)
 182   (Fedora : popt)
 183 libpango development libraries
 184   (Debian : libpango1.0, libpango1.0-dev)
 185   (Fedora : pango, pango-devel)
 186 libc6 development librairies
 187   (Debian : libc6, libc6-dev)
 188   (Fedora : glibc, glibc)
 189 </PRE>
 190 </ul>
 191
 192 <li>Reminder</li>
 193
 194 <p>
 195 See the list of compatibilities between LTTng, ltt-control and LTTV at :
 196 <a
 197 href="http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=doc/developer/lttng-lttv-compatibility.html;hb=HEAD">LTTng+LTTV versions compatibility</a>.
 198
 199
 200 <h3><a href="#TOCgetlttng" name="getlttng">Getting the LTTng packages</a></h3>
 201
 202 <PRE>
 203 su -
 204 mkdir /usr/src/lttng
 205 cd /usr/src/lttng
 206 (see http://lttng.org/files/lttng for package listing)
 207 wget http://lttng.org/files/lttng/patch-2.6.X-lttng-0.x.xx.tar.bz2
 208 wget http://lttng.org/files/lttng/lttng-modules-0.x.tar.bz2
 209 bzip2 -cd patch-2.6.X-lttng-0.x.xx.tar.bz2 | tar xvof -
 210 bzip2 -cd lttng-modules-0.x.tar.bz2 | tar xvof -
 211 </PRE>
 212
 213
 214 <h3><a href="#TOCgetlttngsrc" name="getlttngsrc">Getting LTTng kernel sources</a></h3>
 215
 216 <PRE>
 217 su -
 218 cd /usr/src
 219 wget http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.X.tar.bz2
 220 bzip2 -cd linux-2.6.X.tar.bz2 | tar xvof -
 221 cd linux-2.6.X
 222 - For LTTng 0.9.4- cat /usr/src/lttng/patch*-2.6.X-lttng-0.x.xx* | patch -p1
 223 - For LTTng 0.9.5+ apply the patches in the order specified in the series file,
 224   or use quilt
 225 cd ..
 226 mv linux-2.6.X linux-2.6.X-lttng-0.x.xx
 227 </PRE>
 228
 229
 230 <h3><a href="#TOCinstalllttng" name="installlttng">Installing a LTTng kernel</a></h3>
 231
 232 <PRE>
 233 su -
 234 cd /usr/src/linux-2.6.X-lttng-0.x.xx
 235 make menuconfig (or make xconfig or make config)
 236     Select the &lt; Help &gt; button if you are not familiar with kernel
 237     configuration.
 238     Items preceded by [*] means they has to be built into the kernel.
 239     Items preceded by [M] means they has to be built as modules.
 240     Items preceded by [ ] means they should be removed.
 241   go to the "General setup" section
 242     Select the following options :
 243     [*] Prompt for development and/or incomplete code/drivers
 244     [*] Activate markers
 245     [*] Immediate value optimization (optional)
 246   Select &lt;Exit&gt;
 247   Select &lt;Exit&gt;
 248   Select &lt;Yes&gt;
 249 make
 250 make modules_install
 251 (if necessary, create a initrd with mkinitrd or your preferate alternative)
 252 (mkinitrd -o /boot/initrd.img-2.6.X-lttng-0.x.xx 2.6.X-lttng-0.x.xx)
 253
 254 -- on X86, X86_64
 255 make install
 256 reboot
 257 Select the Linux 2.6.X-lttng-0.x.xx kernel in your boot loader.
 258
 259 -- on PowerPC
 260 cp vmlinux.strip /boot/vmlinux-2.6.X-lttng-0.x.xx
 261 cp System.map /boot/System.map-2.6.X-lttng-0.x.xx
 262 cp .config /boot/config-2.6.X-lttng-0.x.xx
 263 depmod -ae -F /boot/System.map-2.6.X-lttng-0.x.xx 2.6.X-lttng-0.x.xx
 264 mkinitrd /boot/initrd.img-2.6.X-lttng-0.x.xx 2.6.X-lttng-0.x.xx
 265 (edit /etc/yaboot.conf to add a new entry pointing to your kernel : the entry
 266 that comes first is the default kernel)
 267 ybin
 268 select the right entry at the yaboot prompt (see choices : tab, select : type
 269 the kernel name followed by enter)
 270 Select the Linux 2.6.X-lttng-0.x.xx kernel in your boot loader.
 271 --
 272 </PRE>
 273
 274
 275 <h3><a href="#TOCinstalllttng" name="installlttng">Installing the LTTng modules</a></h3>
 276
 277 <PRE>
 278 su -
 279 cd /usr/src/lttng/lttng-modules-0.x
 280 KERNELDIR=/usr/src/linux-2.6.X-lttng-0.x.xx make
 281 KERNELDIR=/usr/src/linux-2.6.X-lttng-0.x.xx make modules_install
 282 </PRE>
 283
 284 <h3><a href="#TOCeditconfig" name="editconfig">Editing the system wide
 285 configuration</a></h3>
 286
 287 <p>
 288 You must activate debugfs and specify a mount point. This is typically done in
 289 fstab such that it happens at boot time.  If you have never used DebugFS before,
 290 these operation would do this for you :
 291
 292 <PRE>
 293 mkdir /mnt/debugfs
 294 cp /etc/fstab /etc/fstab.lttng.bkp
 295 echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
 296 </PRE>
 297
 298 <p>
 299 then, rebooting or issuing the following command will activate debugfs :
 300 <PRE>
 301 mount /mnt/debugfs
 302 </PRE>
 303
 304 <p>
 305 You need to load the LTT modules to be able to control tracing from user
 306 space. This is done by issuing the following commands. Note however
 307 these commands load all LTT modules. Depending on what options you chose to
 308 compile statically, you may not need to issue all these commands.
 309
 310 <PRE>
 311 modprobe ltt-trace-control
 312 modprobe ltt-marker-control
 313 modprobe ltt-tracer
 314 modprobe ltt-relay
 315 modprobe ipc-trace
 316 modprobe kernel-trace
 317 modprobe mm-trace
 318 modprobe net-trace
 319 modprobe fs-trace
 320 modprobe jbd2-trace
 321 modprobe ext4-trace
 322 modprobe syscall-trace
 323 modprobe trap-trace
 324 modprobe block-trace
 325 #if locking tracing is wanted, uncomment the following
 326 #modprobe lockdep-trace
 327 </PRE>
 328
 329 <p>
 330 If you want to have complete information about the kernel state (including all
 331 the process names), you need to load the ltt-statedump module. This is done by
 332 issuing the command :
 333
 334 <PRE>
 335 modprobe ltt-statedump
 336 </PRE>
 337 <p>
 338 You can automate at boot time loading the ltt-control module by :
 339
 340 <PRE>
 341 cp /etc/modules /etc/modules.bkp
 342 echo ltt-trace-control >> /etc/modules
 343 echo ltt-marker-control >> /etc/modules
 344 echo ltt-tracer >> /etc/modules
 345 echo ltt-relay >> /etc/modules
 346 echo ipc-trace >> /etc/modules
 347 echo kernel-trace >> /etc/modules
 348 echo mm-trace >> /etc/modules
 349 echo net-trace >> /etc/modules
 350 echo fs-trace >> /etc/modules
 351 echo jbd2-trace >> /etc/modules
 352 echo ext4-trace >> /etc/modules
 353 echo syscall-trace >> /etc/modules
 354 echo trap-trace >> /etc/modules
 355 #if locking tracing is wanted, uncomment the following
 356 #echo lockdep-trace >> /etc/modules
 357 </PRE>
 358
 359
 360 <h3><a href="#TOCgetlttctl" name="getlttctl">Getting and installing the
 361 ltt-control package (on the traced machine)</a></h3>
 362 <p>
 363 (note : the ltt-control package contains lttd and lttctl. Although it has the
 364 same name as the ltt-control kernel module, they are *not* the same thing.)
 365
 366 <PRE>
 367 su -
 368 cd /usr/src
 369 wget http://lttng.org/files/lttng/ltt-control-0.x-xxxx2006.tar.gz
 370 gzip -cd ltt-control-0.x-xxxx2008.tar.gz | tar xvof -
 371 cd ltt-control-0.x-xxxx2006
 372 (refer to README to see the development libraries that must be installed on you
 373 system)
 374 ./configure
 375 make
 376 make install
 377 # (run ldconfig to ensure new shared objects are taken into account)
 378 ldconfig
 379 </PRE>
 380
 381 <h3><a href="#TOCuserspacetracing" name="userspacetracing">Userspace tracing</a></h3>
 382
 383 <PRE>
 384 Make sure you selected the kernel menuconfig option :
 385     &lt;M&gt; or &lt;*&gt; Support logging events from userspace
 386 And that the ltt-userspace-event kernel module is loaded if selected as a
 387 module.
 388
 389 Simple userspace tracing is available through
 390 echo "some text to record" &gt; /mnt/debugfs/ltt/write_event
 391
 392 It will appear in the trace under event :
 393 channel : userspace
 394 event name : event
 395 </PRE>
 396
 397 <h3><a href="#TOCgetlttv" name="getlttv">Getting and installing the LTTV package
 398 (on the visualisation machine, same
 399 or different from the visualisation machine)</a></h3>
 400
 401 <PRE>
 402 su -
 403 cd /usr/src
 404 wget http://lttng.org/files/packages/lttv-0.x.xx-xxxx2008.tar.gz
 405 gzip -cd lttv-0.x.xx-xxxx2008.tar.gz | tar xvof -
 406 cd lttv-0.x.xx-xxxx2008
 407 (refer to README to see the development libraries that must be installed on your
 408 system)
 409 ./configure
 410 make
 411 make install
 412 # (run ldconfig to ensure new shared objects are taken into account)
 413 ldconfig
 414 </PRE>
 415
 416 <hr />
 417
 418
 419 <h2><a href="#TOCsection2" name="section2">Using LTTng and LTTV</a></h2>
 420
 421 <li><b>IMPORTANT : Arm Linux Kernel Markers after each boot before tracing</b></li>
 422 <PRE>
 423 ltt-armall
 424 </PRE>
 425
 426 <h3><a href="#TOCuselttvgui" name="uselttvgui">Use graphical LTTV to control
 427 tracing and analyse traces</a></h3>
 428 <PRE>
 429 lttv-gui (or /usr/local/bin/lttv-gui)
 430   - Spot the "Tracing Control" icon : click on it
 431       (it's a traffic light icon)
 432     - enter the root password
 433     - click "start"
 434     - click "stop"
 435     - Yes
 436       * You should now see a trace
 437 </PRE>
 438
 439 <h3><a href="#TOCuselttngtext" name="uselttngtext">Use text mode LTTng to control tracing</a></h3>
 440 <PRE>
 441 The tracing can be controlled from a terminal by using the lttctl command (as
 442 root).
 443
 444 Start tracing :
 445
 446 lttctl -C -w /tmp/trace1 trace1
 447
 448 Stop tracing and destroy trace channels :
 449
 450 lttctl -D trace1
 451
 452 see lttctl --help for details.
 453 </PRE>
 454 <p>
 455 (note : to see if the buffers has been filled, look at the dmesg output after
 456 lttctl -D or after stopping tracing from the GUI, it will show an event lost
 457 count. If it is the case, try using larger buffers. See lttctl --help to learn
 458 how. lttv now also shows event lost messages in the console when loading a trace
 459 with missing events or lost subbuffers.)
 460
 461 <h3><a href="#TOCuselttvtext" name="uselttvtext">Use text mode LTTV</a></h3>
 462 <p>
 463 Feel free to look in /usr/local/lib/lttv/plugins to see all the text and
 464 graphical plugins available.
 465 <p>
 466 For example, a simple trace dump in text format is available with :
 467 <PRE>
 468 lttv -m textDump -t /tmp/trace
 469 </PRE>
 470 <p>
 471 See lttv -m textDump --help for detailed command line options of textDump.
 472 <p>
 473 It is, in the current state of the project, very useful to use "grep" on the
 474 text output to filter by specific event fields. You can later copy the timestamp
 475 of the events to the clipboard and paste them in the GUI by clicking on the
 476 bottom right label "Current time". Support for this type of filtering should
 477 be added to the filter module soon.
 478
 479 <h3><a href="#TOChybrid" name="hybrid">Tracing in "Hybrid" mode</a></h3>
 480 <p>
 481 Starting from LTTng 0.5.105 and ltt-control 0.20, a new mode can be used :
 482 hybrid. It can be especially useful when studying big workloads on a long period
 483 of time.
 484 <p>
 485 When using this mode, the most important, low rate control information will be
 486 recorded during all the trace by lttd (i.e. process creation/exit). The high
 487 rate information (i.e. interrupt/traps/syscall entry/exit) will be kept in a
 488 flight recorder buffer (now named flight-channelname_X).
 489 <p>
 490 The following lttctl commands take an hybrid trace :
 491 <p>
 492 Create trace channel, start lttd on normal channels, start tracing:
 493 <PRE>
 494 lttctl -C -w /tmp/trace2 -o channel.kernel.overwrite=1 trace2
 495 </PRE>
 496 <p>
 497 Stop tracing, start lttd on flight recorder channels, destroy trace channels :
 498 <PRE>
 499 lttctl -D -w /tmp/trace2 trace2
 500 </PRE>
 501 <p>
 502 Each "overwrite" channel is flight recorder channel.
 503
 504
 505 <h3><a href="#TOCflight" name="flight">Tracing in flight recorder mode</a></h3>
 506 <li>Flight recorder mode</li>
 507 <p>
 508 The flight recorder mode writes data into overwritten buffers for all channels,
 509 including control channels, except for the facilities tracefiles. It consists of
 510 setting all channels to "overwrite".
 511 <p>
 512 The following lttctl commands take a flight recorder trace :
 513 <PRE>
 514 lttctl -C -w /tmp/trace3 -o channel.all.overwrite=1 trace3
 515 ...
 516 lttctl -D -w /tmp/trace3 trace3
 517 </PRE>
 518
 519 <hr />
 520
 521
 522 <h2><a href="#TOCsection3" name="section3">Adding new instrumentations with the
 523 markers</a></h2>
 524 <p>
 525
 526 <h3><a href="#TOCkerneltp" name="kerneltp">Adding kernel
 527 instrumentation</a></h3>
 528
 529 <p>
 530 See <a
 531 href="http://git.kernel.org/?p=linux/kernel/git/compudj/linux-2.6-lttng.git;a=blob;f=Documentation/markers.txt">Documentation/markers.txt</a>
 532 and <a
 533 href="http://git.kernel.org/?p=linux/kernel/git/compudj/linux-2.6-lttng.git;a=blob;f=Documentation/trace/tracepoints.txt">Documentation/trace/tracepoints.txt</a> in your kernel
 534 tree.
 535 <p>
 536 Also see <a
 537 href="http://git.kernel.org/?p=linux/kernel/git/compudj/linux-2.6-lttng.git;a=tree;f=ltt/probes">ltt/probes/</a>
 538 for LTTng probe examples.
 539
 540 <h3><a href="#TOCusertp" name="usertp">Adding userspace instrumentation</a></h3>
 541
 542 Add new events to userspace programs with
 543 <a href="http://lttng.org/files/packages/">userspace markers packages</a>.
 544 Get the latest markers-userspace-*.tar.bz2 and see the Makefile and examples. It
 545 allows inserting markers in executables and libraries, currently only on x86_32
 546 and x86_64.
 547 See <a
 548 href="http://lttng.org/files/packages/markers-userspace-0.5.tar.bz2">markers-userspace-0.5.tar.bz2</a> or more recent.
 549
 550 <p>
 551 Note that tracepoint/marker-based userspace tracing is available at <a
 552 href="http://lttng.org/ust/">LTTng User-space Tracer (UST)</a>.
 553
 554 <p>
 555 The easy quick-and-dirty way to perform userspace tracing is currently to write
 556 an string to /mnt/debugfs/ltt/write_event. See <a
 557 href="#userspacetracing">Userspace tracing</a> in the
 558 installation for sources section of this document.
 559
 560 <hr />
 561
 562 <h2><a href="#TOCsection4" name="section4">Creating Debian or RPM packages</a></h2>
 563 <p>
 564
 565 <h3><a href="#TOCpkgdebian" name="pkgdebian">Create custom LTTV Debian packages</a></h3>
 566
 567 <PRE>
 568 Use : dpkg-buildpackage -rfakeroot
 569 </PRE>
 570 <p>
 571 You should then have your LTTV .deb files created for your architecture.
 572
 573 <h3><a href="#TOCpkglttng" name="pkglttng">Create custom LTTng packages</a></h3>
 574 <p>
 575 For building LTTng Debian packages :
 576 get the build tree with patches applies as explained in section 2.
 577
 578 <PRE>
 579 make menuconfig (or xconfig or config) (customize your configuration)
 580 make-kpkg kernel_image
 581 </PRE>
 582 <p>
 583 You will then see your freshly created .deb in /usr/src. Install it with
 584 <PRE>
 585 dpkg -i /usr/src/(image-name).deb
 586 </PRE>
 587 <p>
 588 Then, follow the section "Editing the system wide configuration" in section 2.
 589
 590 <hr />
 591
 592   </body>
 593 </html>