Even if support for utsack is very limited, document the option needed.

OK mpi@

diff --git a/usr.sbin/btrace/btrace.8 b/usr.sbin/btrace/btrace.8
index 771e3ce..b233465 100644 (file)
--- a/usr.sbin/btrace/btrace.8
+++ b/usr.sbin/btrace/btrace.8
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: btrace.8,v 1.8 2022/12/22 19:53:24 kn Exp $
+.\"    $OpenBSD: btrace.8,v 1.9 2023/09/15 10:56:46 claudio Exp $
 .\"
 .\" Copyright (c) 2019 Martin Pieuchot <mpi@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: December 22 2022 $
+.Dd $Mdocdate: September 15 2023 $
 .Dt BTRACE 8
 .Os
 .Sh NAME
@@ -24,6 +24,7 @@
 .Nm btrace
 .Op Fl lnv
 .Op Fl e Ar program | Ar file
+.Op Fl p Ar file
 .Op Ar argument ...
 .Sh DESCRIPTION
 The
@@ -47,6 +48,12 @@ List all available probes.
 .It Fl n
 No action.
 Parse the program and then exit.
+.It Fl p Ar file
+Load symbols from
+.Ar file
+to convert
+.Va ustack
+addresses into function names.
 .It Fl v
 Verbose mode.
 Causes