binary packages and use it. If there are no packages ready for your system, you
will have to install from sources (section 2) instead.
-These operations are made for installing LTTng 0.3 on a linux 2.6.12-rc2-mm2
-kernel. Change the versions to fit your needs.
+These operations are made for installing the LTTng 0.4 tracer on a
+linux 2.6.12-rc4-mm2 kernel. You will also find instructions for installtion of
+LTTV 0.6.x : the Linux Trace Toolkit Viewer.
+
+At this point, the -mm tree of the kernel is used because it has RelayFS support
+in it. In a nearby future, a vanilla kernel 2.6.14 will be used, as RelayFS has
+been integrated in the linux 2.6.14-rc series.
+
+The following lttng patch is necessary to have the tracing hooks in the kernel.
+The following ltt-control module controls the tracing.
+
+Required programs and librairies are assumed to be automatically installed in an
+installation with Debian or RPM packages. In the case of an installation from
+sources, the dependencies are listed.
+
Author : Mathieu Desnoyers, September 2005
** Section 2 * Installation from sources **
***********************************************************
+* Prerequisites
+
+Tools needed to follow the package download steps :
+
+o wget
+o bzip2
+o gzip
+o tar
+
+You have to install the standard development librairies and programs necessary
+to compile a kernel :
+
+(from Documentation/Changes in the Linux kernel tree)
+o Gnu C 2.95.3 # gcc --version
+o Gnu make 3.79.1 # make --version
+o binutils 2.12 # ld -v
+o util-linux 2.10o # fdformat --version
+o module-init-tools 0.9.10 # depmod -V
+
+You might also want to have libncurses5 to have the text mode kernel
+configuration menu, but there are alternatives.
+
+Prerequisites for LTTV 0.6.x installation are :
+
+gtk 2.4 or better development libraries (libgtk2.0, libgtk2.0-dev)
+glib 2.4 or better development libraries (libglib2.0-0, libglib2.0-dev)
+libpopt development libraries (libpopt0, libpopt-dev)
+libpango development libraries (libpango1.0, libpango1.0-dev)
+libc6 development librairies (libc6, libc6-dev)
+
+
* Getting the LTTng packages
su -
cd /usr/src/lttng
(see http://ltt.polymtl.ca/lttng for package listing)
wget http://ltt.polymtl.ca/lttng/lttng-modules-0.2.tar.bz2
-wget http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.3.bz2
+wget http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.4.bz2
bzip2 -cd lttng-modules-0.2.tar.bz2 | tar xvof -
bzip2 -cd linux-2.6.12-rc4.tar.bz2 | tar xvof -
cd linux-2.6.12-rc4
bzip2 -cd ../2.6.12-rc4-mm2.bz2 | patch -p1
-bzip2 -cd /usr/src/lttng/patch-2.6.12-rc4-mm2-lttng-0.3.bz2 | patch -p1
+bzip2 -cd /usr/src/lttng/patch-2.6.12-rc4-mm2-lttng-0.4.bz2 | patch -p1
cd ..
-mv linux-2.6.12-rc4 linux-2.6.12-rc4-mm2-lttng-0.3
+mv linux-2.6.12-rc4 linux-2.6.12-rc4-mm2-lttng-0.4
* Installing a LTTng kernel
su -
-cd /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3
-make menuconfig
- General setup
- * Linux Trace Toolkit Instrumentation Support
- M or * Linux Trace Toolkit Tracer
+cd /usr/src/linux-2.6.12-rc4-mm2-lttng-0.4
+make menuconfig (or make xconfig or make config)
+ Select the < Help > button if you are not familiar with kernel
+ configuration.
+ Items preceded by [*] means they has to be built into the kernel.
+ Items preceded by [M] means they has to be built as modules.
+ Items preceded by [ ] means they should be removed.
+ go to the "General setup" section
+ Select the following options :
+ [*] Linux Trace Toolkit Instrumentation Support
+ [M] or [*] Linux Trace Toolkit Tracer
do NOT activate (not ready yet) :
- Align Linux Trace Toolkit Traces
- Activate Linux Trace Toolkit Heartbeat Timer
+ [ ] Align Linux Trace Toolkit Traces
+ [ ] Activate Linux Trace Toolkit Heartbeat Timer
IMPORTANT : This is enabled by default : you must disable it!
+ Select <Exit>
+ Select <Exit>
+ Select <Yes>
make
make install
make modules_install
-The first time you use relayfs, you have to specify a mount point in you system:
+You must activate relayfs and specify a mount point. This is typically done in
+fstab such that it happens at boot time.
+
+If you have never used RelayFS before, these operation would do this for you :
mkdir /mnt/relayfs
echo "relayfs /mnt/relayfs relayfs rw 0 0" \
>> /etc/fstab
-Depending on your boot loader, you may want to execute :
-update-grub or lilo
-
reboot
+ Select the Linux 2.6.12-rc4-mm2-lttng-0.4 kernel in your boot loader.
+
* Install the ltt-modules
su -
cd /usr/src/lttng/lttng-modules-0.2
-KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.3 make
-KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.3 make modules_install
+KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.4 make
+KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.4 make modules_install
-note : at this stage, you might want to execute
+You need to load the ltt-control module to be able to control tracing from user
+space. This is done by issuing the command :
modprobe ltt-control
-and you might also want to do this :
+You can automate at boot time loading the ltt-control module by :
echo ltt-control >> /etc/modules
su -
cd /usr/src
-wget http://ltt.polymtl.ca/packages/LinuxTraceToolkitViewer-0.6.2-20092005.tar.gz
-gzip -cd LinuxTraceToolkitViewer-0.6.2-20092005.tar.gz | tar xvof -
-cd LinuxTraceToolkitViewer-0.6.2-20092005
+wget http://ltt.polymtl.ca/packages/LinuxTraceToolkitViewer-0.6.5-21092005.tar.gz
+gzip -cd LinuxTraceToolkitViewer-0.6.5-21092005.tar.gz | tar xvof -
+cd LinuxTraceToolkitViewer-0.6.5-21092005
(refer to README to see the development libraries that must be installed on you
system)
./configure
Start tracing :
-lttctl -n trace -d -l /mnt/relayfs/ltt -t /tmp/trace1
+lttctl -n trace -d -l /mnt/relayfs/ltt -t /tmp/trace
Stop tracing and destroy trace channels :
cd /tmp
/usr/local/bin/genevent /usr/local/share/LinuxTraceToolkitViewer/yourfacility.xml
cp ltt-facility-yourfacility.h ltt-facility-id-yourfacility.h \
- /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/include/linux/ltt
+ /usr/src/linux-2.6.12-rc4-mm2-lttng-0.4/include/linux/ltt
cp ltt-facility-loader-yourfacility.c ltt-facility-loader-yourfacility.h \
- /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/ltt
+ /usr/src/linux-2.6.12-rc4-mm2-lttng-0.4/ltt
* edit the kernel file you want to instrument
- Add #include <linux/ltt/ltt-facility-yourfacility.h> at the beginning
of the file.
- Add a call to the tracing functions. See their names and parameters in
- /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/include/linux/ltt/ltt-facility-yourfacility.h
+ /usr/src/linux-2.6.12-rc4-mm2-lttng-0.4/include/linux/ltt/ltt-facility-yourfacility.h