Add documentation for staprun -d option.

1 files changed, 3 insertions, 0 deletions

diff --git a/runtime/staprun/common.c b/runtime/staprun/common.c
index f228caff..d07f85b1 100644
--- a/runtime/staprun/common.c
+++ b/runtime/staprun/common.c
@@ -135,6 +135,9 @@ void usage(char *prog)
 	err("                That value will be per-cpu in bulk mode.\n");
 	err("-L              Load module and start probes, then detach.\n");
 	err("-A              Attach to loaded systemtap module.\n");
+	err("-d modulename   Delete a module.  Only detached or unused modules\n");
+	err("                the user has permission to access will be deleted. Use \"*\"\n");
+	err("                (quoted) to delete all unused modules.\n");
 	err("MODULE can be either a module name or a module path.  If a\n");
 	err("module name is used, it is looked for in the following\n");
 	err("directory: /lib/modules/`uname -r`/systemtap\n");