+- Licenses
+
@@ -87,8 +89,7 @@ kernel.
-
-
+
LTTng, UST and LTTV are developed by an open community. LTTng is released under
a dual Gnu LGPLv2.1/GPLv2 license, except for very few kernel-specific files
@@ -97,6 +98,9 @@ which are derived work from the Linux kernel.
LTTV is available under the Gnu GPLv2. The low-level LTTV trace reading library
is released under Gnu LGPLv2.1.
+The Eclipse LTTng trace analysis tool is released under the EPL and uses the
+LTTV trace reading library (LGPLv2.1).
+
The UST (Userspace Tracing) and the Userspace RCU libraries are released under
the LGPLv2.1 license, which allows linking with non-GPL (BSD, proprietary...)
applications. The associated headers are released under MIT-style/BSD-style
@@ -104,10 +108,7 @@ licenses.
Please refer to each particular file licensing for details.
-
-
-
LTTng :
- x86 32/64 bits
@@ -173,7 +174,7 @@ gtk 2.4 or better development libraries
(Fedora : gtk2, gtk2-devel)
note : For Fedora users : this might require at least core 3 from Fedora,
or you might have to compile your own GTK2 library.
-glib 2.4 or better development libraries
+glib 2.16 or better development libraries
(Debian : libglib2.0-0, libglib2.0-dev)
(Fedora : glib2, glib2-devel)
libpopt development libraries
@@ -231,7 +232,7 @@ mv linux-2.6.X linux-2.6.X-lttng-0.x.xx
su -
cd /usr/src/linux-2.6.X-lttng-0.x.xx
make menuconfig (or make xconfig or make config)
- Select the < Help > button if you are not familiar with kernel
+ 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.
@@ -242,21 +243,21 @@ make menuconfig (or make xconfig or make config)
[*] Activate markers
[*] Activate userspace markers ABI (experimental, optional)
[*] Immediate value optimization (optional)
- [*] Linux Trace Toolkit Next Generation (LTTng) --->
- or <*> Compile lttng tracing probes
- or <*> Linux Trace Toolkit High-speed Lockless Data Relay
- or <*> Linux Trace Toolkit Lock-Protected Data Relay
- or <*> Linux Trace Toolkit Serializer
- or <*> Linux Trace Toolkit Marker Control
- or <*> Linux Trace Toolkit Tracer
+ [*] Linux Trace Toolkit Next Generation (LTTng) --->
+ <M> or <*> Compile lttng tracing probes
+ <M> or <*> Linux Trace Toolkit High-speed Lockless Data Relay
+ <M> or <*> Linux Trace Toolkit Lock-Protected Data Relay
+ <M> or <*> Linux Trace Toolkit Serializer
+ <M> or <*> Linux Trace Toolkit Marker Control
+ <M> or <*> Linux Trace Toolkit Tracer
[*] Align Linux Trace Toolkit Traces
- or <*> Support logging events from userspace
+ <M> or <*> Support logging events from userspace
[*] Support trace extraction from crash dump
- or <*> Linux Trace Toolkit Trace Controller
- or <*> Linux Trace Toolkit State Dump
- Select
- Select
- Select
+ <M> or <*> Linux Trace Toolkit Trace Controller
+ <M> or <*> Linux Trace Toolkit State Dump
+ Select <Exit>
+ Select <Exit>
+ Select <Yes>
make
make modules_install
(if necessary, create a initrd with mkinitrd or your preferate alternative)
@@ -384,12 +385,12 @@ ldconfig
Make sure you selected the kernel menuconfig option :
- or <*> Support logging events from userspace
+ <M> or <*> Support logging events from userspace
And that the ltt-userspace-event kernel module is loaded if selected as a
module.
Simple userspace tracing is available through
-echo "some text to record" > /mnt/debugfs/ltt/write_event
+echo "some text to record" > /mnt/debugfs/ltt/write_event
It will appear in the trace under event :
channel : userspace