X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fworkqueue.h;h=542526c6e8ef118a057a2441429f79701f2b320d;hb=f291e17227cf30432ca7c402220f62e6924dd97d;hp=d555f31c0746a31a50f376ca41ed2cbcf48742fe;hpb=f697b677620d04d8c77841745727de85f7e948b1;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index d555f31c074..542526c6e8e 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -8,6 +8,7 @@
 #include <linux/timer.h>
 #include <linux/linkage.h>
 #include <linux/bitops.h>
+#include <linux/lockdep.h>
 #include <asm/atomic.h>
 
 struct workqueue_struct;
@@ -28,6 +29,9 @@ struct work_struct {
 #define WORK_STRUCT_WQ_DATA_MASK (~WORK_STRUCT_FLAG_MASK)
 	struct list_head entry;
 	work_func_t func;
+#ifdef CONFIG_LOCKDEP
+	struct lockdep_map lockdep_map;
+#endif
 };
 
 #define WORK_DATA_INIT()	ATOMIC_LONG_INIT(0)
@@ -41,10 +45,23 @@ struct execute_work {
 	struct work_struct work;
 };
 
+#ifdef CONFIG_LOCKDEP
+/*
+ * NB: because we have to copy the lockdep_map, setting _key
+ * here is required, otherwise it could get initialised to the
+ * copy of the lockdep_map!
+ */
+#define __WORK_INIT_LOCKDEP_MAP(n, k) \
+	.lockdep_map = STATIC_LOCKDEP_MAP_INIT(n, k),
+#else
+#define __WORK_INIT_LOCKDEP_MAP(n, k)
+#endif
+
 #define __WORK_INITIALIZER(n, f) {				\
 	.data = WORK_DATA_INIT(),				\
 	.entry	= { &(n).entry, &(n).entry },			\
 	.func = (f),						\
+	__WORK_INIT_LOCKDEP_MAP(#n, &(n))			\
 	}
 
 #define __DELAYED_WORK_INITIALIZER(n, f) {			\
@@ -76,12 +93,24 @@ struct execute_work {
  * assignment of the work data initializer allows the compiler
  * to generate better code.
  */
+#ifdef CONFIG_LOCKDEP
 #define INIT_WORK(_work, _func)						\
 	do {								\
+		static struct lock_class_key __key;			\
+									\
 		(_work)->data = (atomic_long_t) WORK_DATA_INIT();	\
+		lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0);\
 		INIT_LIST_HEAD(&(_work)->entry);			\
 		PREPARE_WORK((_work), (_func));				\
 	} while (0)
+#else
+#define INIT_WORK(_work, _func)						\
+	do {								\
+		(_work)->data = (atomic_long_t) WORK_DATA_INIT();	\
+		INIT_LIST_HEAD(&(_work)->entry);			\
+		PREPARE_WORK((_work), (_func));				\
+	} while (0)
+#endif
 
 #define INIT_DELAYED_WORK(_work, _func)				\
 	do {							\
@@ -118,27 +147,48 @@ struct execute_work {
 	clear_bit(WORK_STRUCT_PENDING, work_data_bits(work))
 
 
-extern struct workqueue_struct *__create_workqueue(const char *name,
-						    int singlethread,
-						    int freezeable);
+extern struct workqueue_struct *
+__create_workqueue_key(const char *name, int singlethread,
+		       int freezeable, struct lock_class_key *key,
+		       const char *lock_name);
+
+#ifdef CONFIG_LOCKDEP
+#define __create_workqueue(name, singlethread, freezeable)	\
+({								\
+	static struct lock_class_key __key;			\
+	const char *__lock_name;				\
+								\
+	if (__builtin_constant_p(name))				\
+		__lock_name = (name);				\
+	else							\
+		__lock_name = #name;				\
+								\
+	__create_workqueue_key((name), (singlethread),		\
+			       (freezeable), &__key,		\
+			       __lock_name);			\
+})
+#else
+#define __create_workqueue(name, singlethread, freezeable)	\
+	__create_workqueue_key((name), (singlethread), (freezeable), NULL, NULL)
+#endif
+
 #define create_workqueue(name) __create_workqueue((name), 0, 0)
-#define create_freezeable_workqueue(name) __create_workqueue((name), 0, 1)
+#define create_freezeable_workqueue(name) __create_workqueue((name), 1, 1)
 #define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0)
 
 extern void destroy_workqueue(struct workqueue_struct *wq);
 
-extern int FASTCALL(queue_work(struct workqueue_struct *wq, struct work_struct *work));
-extern int FASTCALL(queue_delayed_work(struct workqueue_struct *wq,
-			struct delayed_work *work, unsigned long delay));
+extern int queue_work(struct workqueue_struct *wq, struct work_struct *work);
+extern int queue_delayed_work(struct workqueue_struct *wq,
+			struct delayed_work *work, unsigned long delay);
 extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
 			struct delayed_work *work, unsigned long delay);
 
-extern void FASTCALL(flush_workqueue(struct workqueue_struct *wq));
+extern void flush_workqueue(struct workqueue_struct *wq);
 extern void flush_scheduled_work(void);
 
-extern int FASTCALL(schedule_work(struct work_struct *work));
-extern int FASTCALL(schedule_delayed_work(struct delayed_work *work,
-					unsigned long delay));
+extern int schedule_work(struct work_struct *work);
+extern int schedule_delayed_work(struct delayed_work *work, unsigned long delay);
 extern int schedule_delayed_work_on(int cpu, struct delayed_work *work,
 					unsigned long delay);
 extern int schedule_on_each_cpu(work_func_t func);
@@ -148,7 +198,7 @@ extern int keventd_up(void);
 extern void init_workqueues(void);
 int execute_in_process_context(work_func_t fn, struct execute_work *);
 
-extern void cancel_work_sync(struct work_struct *work);
+extern int cancel_work_sync(struct work_struct *work);
 
 /*
  * Kill off a pending schedule_delayed_work().  Note that the work callback
@@ -160,20 +210,27 @@ static inline int cancel_delayed_work(struct delayed_work *work)
 {
 	int ret;
 
-	ret = del_timer(&work->timer);
+	ret = del_timer_sync(&work->timer);
 	if (ret)
 		work_clear_pending(&work->work);
 	return ret;
 }
 
-extern void cancel_rearming_delayed_work(struct delayed_work *work);
+extern int cancel_delayed_work_sync(struct delayed_work *work);
 
-/* Obsolete. use cancel_rearming_delayed_work() */
+/* Obsolete. use cancel_delayed_work_sync() */
 static inline
 void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
 					struct delayed_work *work)
 {
-	cancel_rearming_delayed_work(work);
+	cancel_delayed_work_sync(work);
+}
+
+/* Obsolete. use cancel_delayed_work_sync() */
+static inline
+void cancel_rearming_delayed_work(struct delayed_work *work)
+{
+	cancel_delayed_work_sync(work);
 }
 
 #endif