checkpatch: add __alloc_size() to known $Attribute

Make sure checkpatch.pl doesn't get confused about finding the
__alloc_size attribute on functions.

Link: https://lkml.kernel.org/r/20210818214021.2476230-3-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Suggested-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c27d2312cfc307f4469ce7322b06e5025e2fb017..88cb294dc4472e24fdd896905d61ba58d5ad834e 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -489,7 +489,8 @@ our $Attribute      = qr{
                        ____cacheline_aligned|
                        ____cacheline_aligned_in_smp|
                        ____cacheline_internodealigned_in_smp|
-                       __weak
+                       __weak|
+                       __alloc_size\s*\(\s*\d+\s*(?:,\s*\d+\s*)?\)
                  }x;
 our $Modifier;
 our $Inline    = qr{inline|__always_inline|noinline|__inline|__inline__};