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

1 files changed, 8 insertions, 15 deletions

diff --git a/module/splat/splat-mutex.c b/module/splat/splat-mutex.c
index 640f8f407..c64f27aaf 100644
--- a/module/splat/splat-mutex.c
+++ b/module/splat/splat-mutex.c
@@ -59,28 +59,26 @@ typedef struct mutex_priv {
 	int mp_rc;
 } mutex_priv_t;
 
-#ifdef HAVE_3ARGS_INIT_WORK
 static void
 splat_mutex_test1_work(void *priv)
 {
-	mutex_priv_t *mp = (mutex_priv_t *)priv;
+	mutex_priv_t *mp;
 
+        mp = spl_get_work_data(priv, mutex_priv_t, mp_work.work);
 	ASSERT(mp->mp_magic == SPLAT_MUTEX_TEST_MAGIC);
 	mp->mp_rc = 0;
 
 	if (!mutex_tryenter(&mp->mp_mtx))
 		mp->mp_rc = -EBUSY;
 }
-#endif
 
 static int
 splat_mutex_test1(struct file *file, void *arg)
 {
-	int rc = 0;
-#ifdef HAVE_3ARGS_INIT_WORK
 	struct workqueue_struct *wq;
 	struct work_struct work;
 	mutex_priv_t *mp;
+	int rc = 0;
 
 	mp = (mutex_priv_t *)kmalloc(sizeof(*mp), GFP_KERNEL);
 	if (mp == NULL)
@@ -97,7 +95,7 @@ splat_mutex_test1(struct file *file, void *arg)
 
 	mp->mp_magic = SPLAT_MUTEX_TEST_MAGIC;
 	mp->mp_file = file;
-	INIT_WORK(&work, splat_mutex_test1_work, mp);
+	spl_init_work(&work, splat_mutex_test1_work, mp);
 
 	/* Schedule a work item which will try and aquire the mutex via
 	  * mutex_tryenter() while its held.  This should fail and the work
@@ -143,17 +141,16 @@ out:
 	destroy_workqueue(wq);
 out2:
 	kfree(mp);
-#endif
 	return rc;
 }
 
-#ifdef HAVE_3ARGS_INIT_WORK
 static void
 splat_mutex_test2_work(void *priv)
 {
-	mutex_priv_t *mp = (mutex_priv_t *)priv;
+	mutex_priv_t *mp;
 	int rc;
 
+	mp = spl_get_work_data(priv, mutex_priv_t, mp_work.work);
 	ASSERT(mp->mp_magic == SPLAT_MUTEX_TEST_MAGIC);
 
 	/* Read the value before sleeping and write it after we wake up to
@@ -165,16 +162,13 @@ splat_mutex_test2_work(void *priv)
 	mp->mp_rc = rc + 1;
 	mutex_exit(&mp->mp_mtx);
 }
-#endif
 
 static int
 splat_mutex_test2(struct file *file, void *arg)
 {
-	int rc = 0;
-#ifdef HAVE_3ARGS_INIT_WORK
 	struct workqueue_struct *wq;
 	mutex_priv_t *mp;
-	int i;
+	int i, rc = 0;
 
 	mp = (mutex_priv_t *)kmalloc(sizeof(*mp), GFP_KERNEL);
 	if (mp == NULL)
@@ -200,7 +194,7 @@ splat_mutex_test2(struct file *file, void *arg)
 	 * critical region at the same time the system will panic.  If the
 	 * mutex is implemented right this will never happy, that's a pass. */
 	for (i = 0; i < SPLAT_MUTEX_TEST_COUNT; i++) {
-		INIT_WORK(&(mp->mp_work[i]), splat_mutex_test2_work, mp);
+		spl_init_work(&(mp->mp_work[i]), splat_mutex_test2_work, mp);
 
 		if (!queue_work(wq, &(mp->mp_work[i]))) {
 		        splat_vprint(file, SPLAT_MUTEX_TEST2_NAME,
@@ -226,7 +220,6 @@ splat_mutex_test2(struct file *file, void *arg)
 	destroy_workqueue(wq);
 out:
 	kfree(mp);
-#endif
 	return rc;
 }