.timer = TIMER_INITIALIZER(NULL, 0, 0), \
}
+#define __DEFERRED_WORK_INITIALIZER(n, f) { \
+ .work = __WORK_INITIALIZER((n).work, (f)), \
+ .timer = TIMER_DEFERRED_INITIALIZER(NULL, 0, 0), \
+ }
+
#define DECLARE_WORK(n, f) \
struct work_struct n = __WORK_INITIALIZER(n, f)
#define DECLARE_DELAYED_WORK(n, f) \
struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f)
+#define DECLARE_DEFERRED_WORK(n, f) \
+ struct delayed_work n = __DEFERRED_WORK_INITIALIZER(n, f)
+
/*
* initialize a work item's function pointer
*/
__INIT_WORK((_work), (_func), 0); \
} while (0)
-#define INIT_WORK_ON_STACK(_work, _func) \
+#define INIT_WORK_ONSTACK(_work, _func) \
do { \
__INIT_WORK((_work), (_func), 1); \
} while (0)
init_timer(&(_work)->timer); \
} while (0)
-#define INIT_DELAYED_WORK_ON_STACK(_work, _func) \
+#define INIT_DELAYED_WORK_ONSTACK(_work, _func) \
do { \
- INIT_WORK_ON_STACK(&(_work)->work, (_func)); \
+ INIT_WORK_ONSTACK(&(_work)->work, (_func)); \
init_timer_on_stack(&(_work)->timer); \
} while (0)
enum {
WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */
WQ_UNBOUND = 1 << 1, /* not bound to any cpu */
- WQ_FREEZEABLE = 1 << 2, /* freeze during suspend */
- WQ_RESCUER = 1 << 3, /* has an rescue worker */
+ WQ_FREEZABLE = 1 << 2, /* freeze during suspend */
+ WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */
WQ_HIGHPRI = 1 << 4, /* high priority */
WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */
WQ_DYING = 1 << 6, /* internal: workqueue is dying */
+ WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */
WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */
WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
__alloc_workqueue_key((name), (flags), (max_active), NULL, NULL)
#endif
+/**
+ * alloc_ordered_workqueue - allocate an ordered workqueue
+ * @name: name of the workqueue
+ * @flags: WQ_* flags (only WQ_FREEZABLE and WQ_MEM_RECLAIM are meaningful)
+ *
+ * Allocate an ordered workqueue. An ordered workqueue executes at
+ * most one work item at any given time in the queued order. They are
+ * implemented as unbound workqueues with @max_active of one.
+ *
+ * RETURNS:
+ * Pointer to the allocated workqueue on success, %NULL on failure.
+ */
+static inline struct workqueue_struct *
+alloc_ordered_workqueue(const char *name, unsigned int flags)
+{
+ return alloc_workqueue(name, WQ_UNBOUND | flags, 1);
+}
+
#define create_workqueue(name) \
- alloc_workqueue((name), WQ_RESCUER, 1)
-#define create_freezeable_workqueue(name) \
- alloc_workqueue((name), WQ_FREEZEABLE | WQ_UNBOUND | WQ_RESCUER, 1)
+ alloc_workqueue((name), WQ_MEM_RECLAIM, 1)
+#define create_freezable_workqueue(name) \
+ alloc_workqueue((name), WQ_FREEZABLE | WQ_UNBOUND | WQ_MEM_RECLAIM, 1)
#define create_singlethread_workqueue(name) \
- alloc_workqueue((name), WQ_UNBOUND | WQ_RESCUER, 1)
+ alloc_workqueue((name), WQ_UNBOUND | WQ_MEM_RECLAIM, 1)
extern void destroy_workqueue(struct workqueue_struct *wq);
extern void flush_workqueue(struct workqueue_struct *wq);
extern void flush_scheduled_work(void);
-extern void flush_delayed_work(struct delayed_work *work);
extern int schedule_work(struct work_struct *work);
extern int schedule_work_on(int cpu, struct work_struct *work);
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);
+extern bool flush_work(struct work_struct *work);
+extern bool flush_work_sync(struct work_struct *work);
+extern bool cancel_work_sync(struct work_struct *work);
+
+extern bool flush_delayed_work(struct delayed_work *dwork);
+extern bool flush_delayed_work_sync(struct delayed_work *work);
+extern bool cancel_delayed_work_sync(struct delayed_work *dwork);
extern void workqueue_set_max_active(struct workqueue_struct *wq,
int max_active);
* it returns 1 and the work doesn't re-arm itself. Run flush_workqueue() or
* cancel_work_sync() to wait on it.
*/
-static inline int cancel_delayed_work(struct delayed_work *work)
+static inline bool cancel_delayed_work(struct delayed_work *work)
{
- int ret;
+ bool ret;
ret = del_timer_sync(&work->timer);
if (ret)
* if it returns 0 the timer function may be running and the queueing is in
* progress.
*/
-static inline int __cancel_delayed_work(struct delayed_work *work)
+static inline bool __cancel_delayed_work(struct delayed_work *work)
{
- int ret;
+ bool ret;
ret = del_timer(&work->timer);
if (ret)
return ret;
}
-extern int cancel_delayed_work_sync(struct delayed_work *work);
-
/* Obsolete. use cancel_delayed_work_sync() */
-static inline
+static inline __deprecated
void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
struct delayed_work *work)
{
}
/* Obsolete. use cancel_delayed_work_sync() */
-static inline
+static inline __deprecated
void cancel_rearming_delayed_work(struct delayed_work *work)
{
cancel_delayed_work_sync(work);
extern void thaw_workqueues(void);
#endif /* CONFIG_FREEZER */
-#ifdef CONFIG_LOCKDEP
-int in_workqueue_context(struct workqueue_struct *wq);
-#endif
-
#endif