[PATCH v5 1/5] checkpatch: Add more userspace directories to is_userspace()

[Petr Vorel <pvorel@suse.cz>]

arch/ directory contains subdirectories with userspace tools (at least
arch/*/tools/ and arch/*/boot/tools/). Add check to consider any
arch/.*/tools/ subdirectory as userspace tools directory.

This helps not only to strscpy() checks but also to CamelCase checks in
the next commit to be more precise.

Follow-up: 99b70ece33d8 ("checkpatch: suppress strscpy warnings for userspace tools")
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
Changes v4->v5 (all by sashiko):
* Explicitly match the directory separator in new entries for
  is_userspace()

 scripts/checkpatch.pl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f424dafce5bc..b8702f6bc9b5 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2667,7 +2667,9 @@ sub exclude_global_initialisers {
 
 sub is_userspace {
     my ($realfile) = @_;
-    return ($realfile =~ m@^tools/@ || $realfile =~ m@^scripts/@);
+    return ($realfile =~ m@^tools/@ ||
+		$realfile =~ m@^scripts/@ ||
+		$realfile =~ m@^arch/.*/tools/@);
 }
 
 sub process {
-- 
2.55.0