X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=doc%2Fman%2Flttng-ust.3;h=2fb287ac5a62beb9cd02bf475c8e2cc9b44be452;hb=6d26218596597e1c4529b151464fd0ef8d0313cb;hp=7624e88f1d86ff4a31db0d85dc0ede48c9d35019;hpb=dfc45f18efc2a251ad7de817fc4422e6c51fa927;p=lttng-ust.git

diff --git a/doc/man/lttng-ust.3 b/doc/man/lttng-ust.3
index 7624e88f..2fb287ac 100644
--- a/doc/man/lttng-ust.3
+++ b/doc/man/lttng-ust.3
@@ -346,6 +346,13 @@ Virtual process ID: process ID as seen from the point of view of the
 process namespace.
 .PP
 
+.PP
+.IP "ip"
+Instruction pointer: Enables recording of the exact location where a tracepoint
+was emitted. Can be used to reverse-lookup the source location that caused the
+event to be emitted.
+.PP
+
 .PP
 .IP "procname"
 Thread name, as set by exec() or prctl(). It is recommended that
@@ -359,6 +366,29 @@ Pthread identifier. Can be used on architectures where pthread_t maps
 nicely to an unsigned long type.
 .PP
 
+.SH "BASE ADDRESS STATEDUMP"
+
+.PP
+If an application that uses liblttng-ust.so becomes part of a session,
+information about its currently loaded shared objects will be traced to the
+session at session-enable time. To record this information, the following event
+needs to be enabled:
+.PP
+.IP "ust_baddr_statedump:soinfo"
+This event is used to trace a currently loaded shared object. The base address
+(where the dynamic linker has placed the shared object) is recorded in the
+"baddr" field. The path to the shared object gets recorded in the
+"sopath" field (as string). The file size of the loaded object (in
+bytes) is recorded to the "size" field and its time of last modification
+(in seconds since Epoch) is recorded in the "mtime" field.
+.PP
+If the event above is enabled, a series of "ust_baddr_statedump:soinfo"
+events is recorded at session-enable time. It represents the state of
+currently loaded shared objects for the traced process. If this
+information gets combined with the lttng-ust-dl(3) instrumentation, all
+aspects of dynamic loading that are relevant for symbol and
+line number lookup are traced by LTTng.
+.PP
 .SH "ENVIRONMENT VARIABLES"
 
 .PP
@@ -375,12 +405,15 @@ specified in milliseconds. The value 0 means "don't wait". The value
 recommended for applications with time constraints on the process
 startup time.
 .PP
+.IP "LTTNG_UST_WITHOUT_BADDR_STATEDUMP"
+Prevent liblttng-ust to perform a base-address statedump on session-enable.
+.PP
 
 .SH "SEE ALSO"
 
 .PP
 lttng-gen-tp(1), lttng(1), babeltrace(1), lttng-ust-cyg-profile(3),
-lttng-sessiond(8)
+lttng-ust-dl(3), lttng-sessiond(8)
 .PP
 
 .SH "COMPATIBILITY"