The idea of userland using <asm/atomic.h> has our kernel hackers all bent
out of shape, so don't do it.  Suppressing this has another benefit too,
which is we avoid the 4-vs-8-byte problem in BDB that formerly required
mysql-threads.patch.


--- mysql-5.0.21/configure.in~	2006-05-10 14:07:51 +0400
+++ mysql-5.0.21/configure.in	2006-05-10 14:13:42 +0400
@@ -811,47 +811,6 @@ struct request_info *req;
 AC_SUBST(WRAPLIBS)
 
 if test "$TARGET_LINUX" = "true"; then
-  AC_MSG_CHECKING([for atomic operations])
-
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
-
-  atom_ops=
-  AC_TRY_RUN([
-#include <asm/atomic.h>
-int main()
-{
-  atomic_t v;
-
-  atomic_set(&v, 23);
-  atomic_add(5, &v);
-  return atomic_read(&v) == 28 ? 0 : -1;
-}
-  ],
-  [AC_DEFINE([HAVE_ATOMIC_ADD], [1],
-             [atomic_add() from <asm/atomic.h> (Linux only)])
-   atom_ops="${atom_ops}atomic_add "],
-  )
-  AC_TRY_RUN([
-#include <asm/atomic.h>
-int main()
-{
-  atomic_t v;
-
-  atomic_set(&v, 23);
-  atomic_sub(5, &v);
-  return atomic_read(&v) == 18 ? 0 : -1;
-}
-  ],
-  [AC_DEFINE([HAVE_ATOMIC_SUB], [1],
-             [atomic_sub() from <asm/atomic.h> (Linux only)])
-   atom_ops="${atom_ops}atomic_sub "],
-  )
-
-  if test -z "$atom_ops"; then atom_ops="no"; fi
-  AC_MSG_RESULT($atom_ops)
-
-  AC_LANG_RESTORE
 
   AC_ARG_WITH(pstack,
     [  --with-pstack           Use the pstack backtrace library],