2.6.27+ portability changes

- Added SPL_AC_3ARGS_ON_EACH_CPU configure check to determine
  if the older 4 argument version of on_each_cpu() should be
  used or the new 3 argument version.  The retry argument was
  dropped in the new API which was never used anyway.
- Updated work queue compatibility wrappers.  The old way this
  worked was to pass a data point when initialized the workqueue.
  The new API assumed the work item is embedding in a structure
  and we us container_of() to find that data pointer.
- Updated skc->skc_flags to be an unsigned long which is now
  type checked in the bit operations.  This silences the warnings.
- Updated autogen products and splat tests accordingly

include/sys/kmem.h

@@ -45,7 +45,6 @@ extern "C" {
 #include <asm/atomic_compat.h>
 #include <sys/types.h>
 #include <sys/debug.h>
-#include <sys/workqueue.h>
 
 /*
  * Memory allocation interfaces
@@ -286,7 +285,7 @@ typedef struct spl_kmem_cache {
 	spl_kmem_reclaim_t	skc_reclaim;	/* Reclaimator */
 	void			*skc_private;	/* Private data */
 	void			*skc_vmp;	/* Unused */
-	uint32_t		skc_flags;	/* Flags */
+	unsigned long		skc_flags;	/* Flags */
 	uint32_t		skc_obj_size;	/* Object size */
 	uint32_t		skc_obj_align;	/* Object alignment */
 	uint32_t		skc_slab_objs;	/* Objects per slab */

include/sys/types.h

@@ -14,6 +14,8 @@ extern "C" {
 #include <linux/list_compat.h>
 #include <linux/time_compat.h>
 #include <linux/bitops_compat.h>
+#include <linux/smp_compat.h>
+#include <linux/workqueue_compat.h>
 
 #ifndef HAVE_UINTPTR_T
 typedef unsigned long			uintptr_t;

include/sys/workqueue.h

@@ -1,55 +0,0 @@
-/*
- *  This file is part of the SPL: Solaris Porting Layer.
- *
- *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
- *  Produced at Lawrence Livermore National Laboratory
- *  Written by:
- *          Brian Behlendorf <behlendorf1@llnl.gov>,
- *          Herb Wartens <wartens2@llnl.gov>,
- *          Jim Garlick <garlick@llnl.gov>
- *  UCRL-CODE-235197
- *
- *  This is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This is distributed in the hope that it will be useful, but WITHOUT
- *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- *  for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
- */
-
-#ifndef _SPL_WORKQUEUE_H
-#define _SPL_WORKQUEUE_H
-
-#ifdef  __cplusplus
-extern "C" {
-#endif
-
-#include <linux/workqueue.h>
-#include <sys/types.h>
-
-#ifdef HAVE_3ARGS_INIT_WORK
-
-#define delayed_work			work_struct
-
-#define spl_init_work(wq, cb, d)	INIT_WORK((wq), (void *)(cb), \
-						  (void *)(d))
-#define spl_init_delayed_work(wq,cb,d)	INIT_WORK((wq), (void *)(cb), \
-						  (void *)(d))
-#define spl_get_work_data(d, t, f)	(t *)(d)
-
-#else
-
-#define spl_init_work(wq, cb, d)	INIT_WORK((wq), (void *)(cb));
-#define spl_init_delayed_work(wq,cb,d)	INIT_DELAYED_WORK((wq), (void *)(cb));
-#define spl_get_work_data(d, t, f)	(t *)container_of(d, t, f)
-
-#endif /* HAVE_3ARGS_INIT_WORK */
-
-#endif  /* _SPL_WORKQUEUE_H */