Add the newly introduced --json command line to the man page.

Signed-off-by: Daniel Wagner <redacted>
---
 src/svsematest/svsematest.8 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/svsematest/svsematest.8 b/src/svsematest/svsematest.8
index 828f9154e974..93abf55f3d4d 100644
--- a/src/svsematest/svsematest.8
+++ b/src/svsematest/svsematest.8

@@ -4,7 +4,7 @@
 \fBsvsematest\fR \- Start two threads or fork two processes and measure the latency of SYSV semaphores
 .SH "SYNTAX"
 .LP
-svsematest [-a|--affinity NUM] [-b|--breaktrace USEC] [-d|--distance DIST] [-D|--duration TIME] [-f|--fork [OPT]] [-i|--interval INTV] [-l|--loops LOOPS] [-p|--prio PRIO] [-q|--quiet] [-S|--smp] [-t|--threads [NUM]]
+svsematest [-a|--affinity NUM] [-b|--breaktrace USEC] [-d|--distance DIST] [-D|--duration TIME] [-f|--fork [OPT]] [-i|--interval INTV] [--json FILENAME] [-l|--loops LOOPS] [-p|--prio PRIO] [-q|--quiet] [-S|--smp] [-t|--threads [NUM]]
 .br
 .SH "DESCRIPTION"
 .LP

@@ -32,6 +32,9 @@ Instead of creating threads (which is the default), fork new processes
 .B \-i, \-\-interval=INTV
 Set the base interval of the thread(s) in microseconds (default is 1000 us). This sets the interval of the first thread. See also -d.
 .TP
+.B \-\-json=FILENAME
+Write final results into FILENAME, JSON formatted.
+.TP
 .B \-l, \-\-loops=LOOPS
 Set the number of loops. The default is 0 (endless). This option is useful for automated tests with a given number of test cycles. svsematest is stopped once the number of timer intervals has been reached.
 .TP

-- 
2.31.1