kernel-doc: add support for ____cacheline_aligned_in_smp attribute

Subroutine dump_struct uses type attributes to check if the struct
syntax is valid. Then, it removes all attributes before using it for
output. `____cacheline_aligned_in_smp` is an attribute that is
not included in both steps. Add it, since it is used by kernel structs.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index baa2be7..a529375 100755 (executable)
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1062,7 +1062,7 @@ sub dump_struct($$) {
     my $x = shift;
     my $file = shift;
 
-    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
+    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
        my $decl_type = $1;
        $declaration_name = $2;
        my $members = $3;
@@ -1077,6 +1077,7 @@ sub dump_struct($$) {
        $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
        $members =~ s/\s*__packed\s*/ /gos;
        $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
+       $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
        # replace DECLARE_BITMAP
        $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
        # replace DECLARE_HASHTABLE