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      1 /* SPDX-License-Identifier: GPL-2.0 */
      2 #ifndef WORKQUEUES_H
      3 #define WORKQUEUES_H
      4 
      5 #include <stdbool.h>
      6 
      7 #include "barriers.h"
      8 #include "bug_on.h"
      9 #include "int_typedefs.h"
     10 
     11 #include <linux/types.h>
     12 
     13 /* Stub workqueue implementation. */
     14 
     15 struct work_struct;
     16 typedef void (*work_func_t)(struct work_struct *work);
     17 void delayed_work_timer_fn(unsigned long __data);
     18 
     19 struct work_struct {
     20 /*	atomic_long_t data; */
     21 	unsigned long data;
     22 
     23 	struct list_head entry;
     24 	work_func_t func;
     25 #ifdef CONFIG_LOCKDEP
     26 	struct lockdep_map lockdep_map;
     27 #endif
     28 };
     29 
     30 struct timer_list {
     31 	struct hlist_node	entry;
     32 	unsigned long		expires;
     33 	void			(*function)(unsigned long);
     34 	unsigned long		data;
     35 	u32			flags;
     36 	int			slack;
     37 };
     38 
     39 struct delayed_work {
     40 	struct work_struct work;
     41 	struct timer_list timer;
     42 
     43 	/* target workqueue and CPU ->timer uses to queue ->work */
     44 	struct workqueue_struct *wq;
     45 	int cpu;
     46 };
     47 
     48 
     49 static inline bool schedule_work(struct work_struct *work)
     50 {
     51 	BUG();
     52 	return true;
     53 }
     54 
     55 static inline bool schedule_work_on(int cpu, struct work_struct *work)
     56 {
     57 	BUG();
     58 	return true;
     59 }
     60 
     61 static inline bool queue_work(struct workqueue_struct *wq,
     62 			      struct work_struct *work)
     63 {
     64 	BUG();
     65 	return true;
     66 }
     67 
     68 static inline bool queue_delayed_work(struct workqueue_struct *wq,
     69 				      struct delayed_work *dwork,
     70 				      unsigned long delay)
     71 {
     72 	BUG();
     73 	return true;
     74 }
     75 
     76 #define INIT_WORK(w, f) \
     77 	do { \
     78 		(w)->data = 0; \
     79 		(w)->func = (f); \
     80 	} while (0)
     81 
     82 #define INIT_DELAYED_WORK(w, f) INIT_WORK(&(w)->work, (f))
     83 
     84 #define __WORK_INITIALIZER(n, f) { \
     85 		.data = 0, \
     86 		.entry = { &(n).entry, &(n).entry }, \
     87 		.func = f \
     88 	}
     89 
     90 /* Don't bother initializing timer. */
     91 #define __DELAYED_WORK_INITIALIZER(n, f, tflags) { \
     92 	.work = __WORK_INITIALIZER((n).work, (f)), \
     93 	}
     94 
     95 #define DECLARE_WORK(n, f) \
     96 	struct workqueue_struct n = __WORK_INITIALIZER
     97 
     98 #define DECLARE_DELAYED_WORK(n, f) \
     99 	struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, 0)
    100 
    101 #define system_power_efficient_wq ((struct workqueue_struct *) NULL)
    102 
    103 #endif
    104