Fix: tracepoint.h incorrect assumption about constructor order

[lttng-ust.git] / README

diff --git a/README b/README
index 55c72df72cf43b05b06605907a5e36941a2da2fa..30ccb34d1a57903c2822f3618442b23571ef2fda 100644 (file)
--- a/README
+++ b/README
@@ -1,12 +1,11 @@
 LTTNG USERSPACE TRACER (LTTng-UST)
 ----------------------------
 
-UST web site: http://lttng.org/lttng2.0
+UST web site: http://lttng.org
 
 Updated versions of this package may be found at:
 
-  * Website:  http://lttng.org/lttng2.0
-  * Releases: http://lttng.org/files/lttng-ust
+  * Releases: http://lttng.org/download
   * GitWeb:   http://git.lttng.org (project: lttng-ust)
   * Git:      git://git.lttng.org/lttng-ust.git
 
@@ -34,6 +33,8 @@ compile the git repository tree :
   (make sure your system wide "automake" points to a recent version!)
 - GNU Libtool >=2.2
   (for more information, go to http://www.gnu.org/software/autoconf/)
+- Perl (optional)
+  Needed for make check and tests.
 
 If you get the tree from the repository, you will need to use the "bootstrap"
 script in the root of the tree. It calls all the GNU tools needed to prepare the
@@ -75,7 +76,7 @@ USAGE:
     - Include the tracepoint provider header into all C files using
       the provider.
     - Example:
-        tests/hello/  hello.c tp.c ust_tests_hello.h Makefile.example.*
+      - tests/hello/  hello.c tp.c ust_tests_hello.h Makefile.example.*
 
   2) Compile the Tracepoint Provider separately from the application,
      using dynamic linking:
@@ -97,6 +98,10 @@ USAGE:
 
   - Enable instrumentation and control tracing with the "lttng" command
     from lttng-tools. See lttng-tools doc/quickstart.txt.
+  - Note about dlclose() usage: it is not safe to use dlclose on a
+    provider shared object that is being actively used for tracing due
+    to a lack of reference counting from lttng-ust to the used shared
+    object.
 
 ENVIRONMENT VARIABLES:
 
@@ -120,7 +125,7 @@ ENVIRONMENT VARIABLES:
 
 TRACE VIEWER:
 
-  Use babeltrace for viewing traces generated by LTTng UST 2.0.
+  Use babeltrace for viewing traces generated by LTTng UST 2.x.
   See http://lttng.org for download.