Intel Pentium (UP/SMP) with TSC
PowerPC 32 and 64 bits
ARM
+x86_64
C2 Microsystems (variant of MIPS)
LTTV :
su -
cd /usr/src
-wget http://kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.X.tar.bz2
+wget http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.X.tar.bz2
bzip2 -cd linux-2.6.X.tar.bz2 | tar xvof -
cd linux-2.6.X
cat /usr/src/lttng/patch-2.6.X-lttng-0.x.xx* | patch -p1
-- on X86, X86_64
make install
reboot
-Select the Linux 2.6.16-lttng-0.x.xx kernel in your boot loader.
+Select the Linux 2.6.17-lttng-0.x.xx kernel in your boot loader.
-- on PowerPC
-cp vmlinux /boot/vmlinux-2.6.X-lttng-0.x.xx
+cp vmlinux.strip /boot/vmlinux-2.6.X-lttng-0.x.xx
cp System.map /boot/System.map-2.6.X-lttng-0.x.xx
cp .config /boot/config-2.6.X-lttng-0.x.xx
depmod -ae -F /boot/System.map-2.6.X-lttng-0.x.xx 2.6.X-lttng-0.x.xx
ybin
select the right entry at the yaboot prompt (see choices : tab, select : type
the kernel name followed by enter)
-Select the Linux 2.6.16-lttng-0.x.xx kernel in your boot loader.
+Select the Linux 2.6.17-lttng-0.x.xx kernel in your boot loader.
--
* Editing the system wide configuration
-You must activate relayfs and specify a mount point. This is typically done in
+You must activate debugfs 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 :
+If you have never used DebugFS before, these operation would do this for you :
-mkdir /mnt/relayfs
+mkdir /mnt/debugfs
cp /etc/fstab /etc/fstab.lttng.bkp
-echo "relayfs /mnt/relayfs relayfs rw 0 0" >> /etc/fstab
+echo "debugfs /mnt/debugfs debugfs rw 0 0" >> /etc/fstab
-then, rebooting or issuing the following command will activate relayfs :
+then, rebooting or issuing the following command will activate debugfs :
-mount /mnt/relayfs
+mount /mnt/debugfs
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
+modprobe ltt-core
+modprobe ltt-relay
If you want to have complete information about the kernel state (including all
the process names), you need to load the ltt-statedump module. This is done by
You can automate at boot time loading the ltt-control module by :
echo ltt-control >> /etc/modules
+echo ltt-core >> /etc/modules
+echo ltt-relay >> /etc/modules
echo ltt-statedump >> /etc/modules
Start tracing :
-lttctl -n trace -d -l /mnt/relayfs/ltt -t /tmp/trace
+lttctl -n trace -d -l /mnt/debugfs/ltt -t /tmp/trace
Stop tracing and destroy trace channels :
cd /tmp
/usr/local/bin/genevent /usr/local/share/LinuxTraceToolkitViewer/facilities/yourfacility.xml
cp ltt-facility-yourfacility.h ltt-facility-id-yourfacility.h \
- /usr/src/linux-2.6.16-lttng-0.x.xx8/include/linux/ltt
+ /usr/src/linux-2.6.17-lttng-0.x.xx8/include/linux/ltt
cp ltt-facility-loader-yourfacility.c ltt-facility-loader-yourfacility.h \
- /usr/src/linux-2.6.16-lttng-0.x.xx/ltt
+ /usr/src/linux-2.6.17-lttng-0.x.xx/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-2.6.16-lttng-0.x.xx/include/linux/ltt/ltt-facility-yourfacility.h
+ /usr/src/linux-2.6.17-lttng-0.x.xx/include/linux/ltt/ltt-facility-yourfacility.h
* Add new events to userspace programs with genevent
See http://ltt.polymtl.ca/ > USERSPACE TRACING QUICKSTART
projects / lttv.git / blobdiff