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-rw-r--r--include/linux/plist.h43
1 files changed, 37 insertions, 6 deletions
diff --git a/include/linux/plist.h b/include/linux/plist.h
index 45926d77d6ac..8227f717c70f 100644
--- a/include/linux/plist.h
+++ b/include/linux/plist.h
@@ -81,7 +81,8 @@ struct plist_head {
struct list_head prio_list;
struct list_head node_list;
#ifdef CONFIG_DEBUG_PI_LIST
- spinlock_t *lock;
+ raw_spinlock_t *rawlock;
+ spinlock_t *spinlock;
#endif
};
@@ -91,9 +92,11 @@ struct plist_node {
};
#ifdef CONFIG_DEBUG_PI_LIST
-# define PLIST_HEAD_LOCK_INIT(_lock) .lock = _lock
+# define PLIST_HEAD_LOCK_INIT(_lock) .spinlock = _lock
+# define PLIST_HEAD_LOCK_INIT_RAW(_lock) .rawlock = _lock
#else
# define PLIST_HEAD_LOCK_INIT(_lock)
+# define PLIST_HEAD_LOCK_INIT_RAW(_lock)
#endif
#define _PLIST_HEAD_INIT(head) \
@@ -107,11 +110,22 @@ struct plist_node {
*/
#define PLIST_HEAD_INIT(head, _lock) \
{ \
- _PLIST_HEAD_INIT(head), \
+ _PLIST_HEAD_INIT(head), \
PLIST_HEAD_LOCK_INIT(&(_lock)) \
}
/**
+ * PLIST_HEAD_INIT_RAW - static struct plist_head initializer
+ * @head: struct plist_head variable name
+ * @_lock: lock to initialize for this list
+ */
+#define PLIST_HEAD_INIT_RAW(head, _lock) \
+{ \
+ _PLIST_HEAD_INIT(head), \
+ PLIST_HEAD_LOCK_INIT_RAW(&(_lock)) \
+}
+
+/**
* PLIST_NODE_INIT - static struct plist_node initializer
* @node: struct plist_node variable name
* @__prio: initial node priority
@@ -119,13 +133,13 @@ struct plist_node {
#define PLIST_NODE_INIT(node, __prio) \
{ \
.prio = (__prio), \
- .plist = { _PLIST_HEAD_INIT((node).plist) }, \
+ .plist = { _PLIST_HEAD_INIT((node).plist) }, \
}
/**
* plist_head_init - dynamic struct plist_head initializer
* @head: &struct plist_head pointer
- * @lock: list spinlock, remembered for debugging
+ * @lock: spinlock protecting the list (debugging)
*/
static inline void
plist_head_init(struct plist_head *head, spinlock_t *lock)
@@ -133,7 +147,24 @@ plist_head_init(struct plist_head *head, spinlock_t *lock)
INIT_LIST_HEAD(&head->prio_list);
INIT_LIST_HEAD(&head->node_list);
#ifdef CONFIG_DEBUG_PI_LIST
- head->lock = lock;
+ head->spinlock = lock;
+ head->rawlock = NULL;
+#endif
+}
+
+/**
+ * plist_head_init_raw - dynamic struct plist_head initializer
+ * @head: &struct plist_head pointer
+ * @lock: raw_spinlock protecting the list (debugging)
+ */
+static inline void
+plist_head_init_raw(struct plist_head *head, raw_spinlock_t *lock)
+{
+ INIT_LIST_HEAD(&head->prio_list);
+ INIT_LIST_HEAD(&head->node_list);
+#ifdef CONFIG_DEBUG_PI_LIST
+ head->rawlock = lock;
+ head->spinlock = NULL;
#endif
}