#include <linux/timer.h>
#include <linux/linkage.h>
#include <linux/bitops.h>
+#include <linux/lockdep.h>
#include <asm/atomic.h>
struct workqueue_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)
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) { \
* 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 { \
init_timer_deferrable(&(_work)->timer); \
} while (0)
+#define INIT_DELAYED_WORK_ON_STACK(_work, _func) \
+ do { \
+ INIT_WORK(&(_work)->work, (_func)); \
+ init_timer_on_stack(&(_work)->timer); \
+ } while (0)
+
/**
* work_pending - Find out whether a work item is currently pending
* @work: The work item in question
clear_bit(WORK_STRUCT_PENDING, work_data_bits(work))
-extern struct workqueue_struct *__create_workqueue(const char *name,
- int singlethread,
- int freezeable);
-#define create_workqueue(name) __create_workqueue((name), 0, 0)
-#define create_freezeable_workqueue(name) __create_workqueue((name), 0, 1)
-#define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0)
+extern struct workqueue_struct *
+__create_workqueue_key(const char *name, int singlethread,
+ int freezeable, int rt, struct lock_class_key *key,
+ const char *lock_name);
+
+#ifdef CONFIG_LOCKDEP
+#define __create_workqueue(name, singlethread, freezeable, rt) \
+({ \
+ 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), (rt), &__key, \
+ __lock_name); \
+})
+#else
+#define __create_workqueue(name, singlethread, freezeable, rt) \
+ __create_workqueue_key((name), (singlethread), (freezeable), (rt), \
+ NULL, NULL)
+#endif
+
+#define create_workqueue(name) __create_workqueue((name), 0, 0, 0)
+#define create_rt_workqueue(name) __create_workqueue((name), 0, 0, 1)
+#define create_freezeable_workqueue(name) __create_workqueue((name), 1, 1, 0)
+#define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0, 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_work_on(int cpu, 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_work(struct workqueue_struct *wq, struct work_struct *work);
-extern void flush_work_keventd(struct work_struct *work);
+ struct delayed_work *work, unsigned long delay);
-extern int FASTCALL(schedule_work(struct work_struct *work));
-extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, unsigned long delay));
+extern void flush_workqueue(struct workqueue_struct *wq);
+extern void flush_scheduled_work(void);
-extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, unsigned long delay);
+extern int schedule_work(struct work_struct *work);
+extern int schedule_work_on(int cpu, 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);
-extern void flush_scheduled_work(void);
extern int current_is_keventd(void);
extern int keventd_up(void);
extern void init_workqueues(void);
int execute_in_process_context(work_func_t fn, struct execute_work *);
+extern int flush_work(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
* function may still be running on return from cancel_delayed_work(), unless
* it returns 1 and the work doesn't re-arm itself. Run flush_workqueue() or
- * flush_work() or cancel_work_sync() to wait on it.
+ * cancel_work_sync() to wait on it.
*/
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);
+}
+
+#ifndef CONFIG_SMP
+static inline long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
+{
+ return fn(arg);
+}
+#else
+long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg);
+#endif /* CONFIG_SMP */
#endif
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