X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=trunk%2Flttv%2Fdoc%2Fdeveloper%2Fust.txt;h=03799389f6ea8fc83e0959e7bbdfe091b8093917;hb=9a192a692a1dc4b97d9cf99802e12df248816eef;hp=8812dee4d68a3d09cb66c6598bb44223f10cda1c;hpb=f976021fd18cfd58f189dda634f0826f4eb98abd;p=lttv.git

diff --git a/trunk/lttv/doc/developer/ust.txt b/trunk/lttv/doc/developer/ust.txt
index 8812dee4..03799389 100644
--- a/trunk/lttv/doc/developer/ust.txt
+++ b/trunk/lttv/doc/developer/ust.txt
@@ -9,9 +9,10 @@ call LTTng user-space event writing functions.
 
 When the instrumented application starts, a pipe is opened to allow external
 tracing control, asynchronous notification is requested when commands arrive in
-the pipe, and a signal handler is installed for SIGIO. Every time a SIGIO signal
-is received, the runtime library checks for commands received on the external
-tracing control pipe. The recognized commands are:
+the pipe, and a signal handler is installed for SIGIO (or a carefully chosen
+chainable signal number). Every time such signal is received, the runtime
+library checks for commands received on the external tracing control pipe. The
+recognized commands are:
 
 - list the available Markers and Tracepoints;
 - dynamically load a library (presumably containing probes to connect);