From 5d956e11ed3713ff769d51b71f7b4ee6ce0085fe Mon Sep 17 00:00:00 2001
From: Mitchell Horne <mhorne@FreeBSD.org>
Date: Thu, 21 Mar 2024 12:21:04 -0300
Subject: [PATCH] KASSERT(9): describe history of MPASS

The macro originates from BSD/OS, with a different etymology than what
is presented. Add a brief HISTORY section to capture this.

Reviewed by:	emaste
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D44439
---
 share/man/man9/KASSERT.9 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/share/man/man9/KASSERT.9 b/share/man/man9/KASSERT.9
index 8d9dd98014a8..bab8efe5cfac 100644
--- a/share/man/man9/KASSERT.9
+++ b/share/man/man9/KASSERT.9
@@ -183,6 +183,15 @@ MPASS(td == curthread);
 KASSERT(sz >= SIZE_MIN && sz <= SIZE_MAX,
     ("invalid size argument: %u", sz));
 .Ed
+.Sh HISTORY
+The
+.Nm MPASS
+macro first appeared in
+.Bsx
+and was imported into
+.Fx 5.0 .
+The name originates as an acronym of "multi-processor assert", but has evolved
+to mean "must pass", or "must-pass assert".
 .Sh SEE ALSO
 .Xr panic 9
 .Sh AUTHORS