From: Marco Elver <elver@google.com>
Date: Fri, 19 Dec 2025 15:39:54 +0000 (+0100)
Subject: checkpatch: Warn about context_unsafe() without comment
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25d3b21e1d41f7b58aeb62b97b05d86d43c91801;p=thirdparty%2Fkernel%2Flinux.git

checkpatch: Warn about context_unsafe() without comment

Warn about applications of context_unsafe() without a comment, to
encourage documenting the reasoning behind why it was deemed safe.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251219154418.3592607-6-elver@google.com
---

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c0250244cf7a3..c4fd8bdff528b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6733,6 +6733,13 @@ sub process {
 			}
 		}
 
+# check for context_unsafe without a comment.
+		if ($line =~ /\bcontext_unsafe\b/ &&
+		    !ctx_has_comment($first_line, $linenr)) {
+			WARN("CONTEXT_UNSAFE",
+			     "context_unsafe without comment\n" . $herecurr);
+		}
+
 # check of hardware specific defines
 		if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
 			CHK("ARCH_DEFINES",