ktrace(1) on OpenBSD
The text c586b9d4e711, as OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4 shipped it.
enable kernel process tracing
Flags it lists
-
-C -
-a -
-c -
-d -
-f -
-g -
-i -
-p -
-t