patch cstyle-atomic

@@ -21,13 +21,10 @@
 #
 #
 # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
-# @(#)cstyle 1.58 98/09/09 (from shannon)
-#ident  "%Z%%M% %I%     %E% SMI"
-#
 # cstyle - check for some common stylistic errors.
 #
 #       cstyle is a sort of "lint" for C coding style.
 #       It attempts to check for the style used in the
 #       kernel, sometimes known as "Bill Joy Normal Form".

@@ -630,10 +627,16 @@
                 err("blank after preprocessor #");
         }
         if (/!\s*(strcmp|strncmp|bcmp)\s*\(/) {
                 err("don't use boolean ! with comparison functions");
         }
+        if (/\batomic_add_(8|16|32|64|char|short|int|long)\([^,]*,\s*1\)/) {
+                err("use atomic_inc_*(...) instead of atomic_add_*(..., 1)");
+        }
+        if (/\batomic_add_(8|16|32|64|char|short|int|long)\([^,]*,\s*-1\)/) {
+                err("use atomic_dec_*(...) instead of atomic_add_*(..., -1)");
+        }
 
         #
         # We completely ignore, for purposes of indentation:
         #  * lines outside of functions
         #  * preprocessor lines