2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _LINUX_WORKQUEUE_H_
32 #define _LINUX_WORKQUEUE_H_
34 #include <linux/types.h>
35 #include <linux/kernel.h>
36 #include <linux/timer.h>
37 #include <linux/slab.h>
39 #include <asm/atomic.h>
41 #include <sys/param.h>
42 #include <sys/kernel.h>
43 #include <sys/taskqueue.h>
44 #include <sys/mutex.h>
46 #define WORK_CPU_UNBOUND MAXCPU
47 #define WQ_UNBOUND (1 << 0)
48 #define WQ_HIGHPRI (1 << 1)
51 typedef void (*work_func_t)(struct work_struct *);
54 TAILQ_ENTRY(work_exec) entry;
55 struct work_struct *target;
58 struct workqueue_struct {
59 struct taskqueue *taskqueue;
61 TAILQ_HEAD(, work_exec) exec_head;
65 #define WQ_EXEC_LOCK(wq) mtx_lock(&(wq)->exec_mtx)
66 #define WQ_EXEC_UNLOCK(wq) mtx_unlock(&(wq)->exec_mtx)
69 struct task work_task;
70 struct workqueue_struct *work_queue;
75 #define DECLARE_WORK(name, fn) \
76 struct work_struct name; \
77 static void name##_init(void *arg) \
79 INIT_WORK(&name, fn); \
81 SYSINIT(name, SI_SUB_LOCK, SI_ORDER_SECOND, name##_init, NULL)
84 struct work_struct work;
86 struct callout callout;
92 #define DECLARE_DELAYED_WORK(name, fn) \
93 struct delayed_work name; \
94 static void name##_init(void *arg) \
96 linux_init_delayed_work(&name, fn); \
98 SYSINIT(name, SI_SUB_LOCK, SI_ORDER_SECOND, name##_init, NULL)
100 static inline struct delayed_work *
101 to_delayed_work(struct work_struct *work)
103 return (container_of(work, struct delayed_work, work));
106 #define INIT_WORK(work, fn) \
108 (work)->func = (fn); \
109 (work)->work_queue = NULL; \
110 atomic_set(&(work)->state, 0); \
111 TASK_INIT(&(work)->work_task, 0, linux_work_fn, (work)); \
114 #define INIT_WORK_ONSTACK(work, fn) \
117 #define INIT_DELAYED_WORK(dwork, fn) \
118 linux_init_delayed_work(dwork, fn)
120 #define INIT_DEFERRABLE_WORK(dwork, fn) \
121 INIT_DELAYED_WORK(dwork, fn)
123 #define flush_scheduled_work() \
124 taskqueue_drain_all(system_wq->taskqueue)
126 #define queue_work(wq, work) \
127 linux_queue_work_on(WORK_CPU_UNBOUND, wq, work)
129 #define schedule_work(work) \
130 linux_queue_work_on(WORK_CPU_UNBOUND, system_wq, work)
132 #define queue_delayed_work(wq, dwork, delay) \
133 linux_queue_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay)
135 #define schedule_delayed_work_on(cpu, dwork, delay) \
136 linux_queue_delayed_work_on(cpu, system_wq, dwork, delay)
138 #define queue_work_on(cpu, wq, work) \
139 linux_queue_work_on(cpu, wq, work)
141 #define schedule_delayed_work(dwork, delay) \
142 linux_queue_delayed_work_on(WORK_CPU_UNBOUND, system_wq, dwork, delay)
144 #define queue_delayed_work_on(cpu, wq, dwork, delay) \
145 linux_queue_delayed_work_on(cpu, wq, dwork, delay)
147 #define create_singlethread_workqueue(name) \
148 linux_create_workqueue_common(name, 1)
150 #define create_workqueue(name) \
151 linux_create_workqueue_common(name, mp_ncpus)
153 #define alloc_ordered_workqueue(name, flags) \
154 linux_create_workqueue_common(name, 1)
156 #define alloc_workqueue(name, flags, max_active) \
157 linux_create_workqueue_common(name, max_active)
159 #define flush_workqueue(wq) \
160 taskqueue_drain_all((wq)->taskqueue)
162 #define drain_workqueue(wq) do { \
163 atomic_inc(&(wq)->draining); \
164 taskqueue_drain_all((wq)->taskqueue); \
165 atomic_dec(&(wq)->draining); \
168 #define mod_delayed_work(wq, dwork, delay) ({ \
170 __retval = linux_cancel_delayed_work(dwork); \
171 linux_queue_delayed_work_on(WORK_CPU_UNBOUND, \
176 #define delayed_work_pending(dwork) \
177 linux_work_pending(&(dwork)->work)
179 #define cancel_delayed_work(dwork) \
180 linux_cancel_delayed_work(dwork)
182 #define cancel_work_sync(work) \
183 linux_cancel_work_sync(work)
185 #define cancel_delayed_work_sync(dwork) \
186 linux_cancel_delayed_work_sync(dwork)
188 #define flush_work(work) \
189 linux_flush_work(work)
191 #define flush_delayed_work(dwork) \
192 linux_flush_delayed_work(dwork)
194 #define work_pending(work) \
195 linux_work_pending(work)
197 #define work_busy(work) \
198 linux_work_busy(work)
200 #define destroy_work_on_stack(work) \
203 #define destroy_delayed_work_on_stack(dwork) \
206 #define destroy_workqueue(wq) \
207 linux_destroy_workqueue(wq)
211 extern struct workqueue_struct *system_wq;
212 extern struct workqueue_struct *system_long_wq;
213 extern struct workqueue_struct *system_unbound_wq;
214 extern struct workqueue_struct *system_power_efficient_wq;
216 extern void linux_init_delayed_work(struct delayed_work *, work_func_t);
217 extern void linux_work_fn(void *, int);
218 extern void linux_delayed_work_fn(void *, int);
219 extern struct workqueue_struct *linux_create_workqueue_common(const char *, int);
220 extern void linux_destroy_workqueue(struct workqueue_struct *);
221 extern bool linux_queue_work_on(int cpu, struct workqueue_struct *, struct work_struct *);
222 extern bool linux_queue_delayed_work_on(int cpu, struct workqueue_struct *,
223 struct delayed_work *, unsigned delay);
224 extern bool linux_cancel_delayed_work(struct delayed_work *);
225 extern bool linux_cancel_work_sync(struct work_struct *);
226 extern bool linux_cancel_delayed_work_sync(struct delayed_work *);
227 extern bool linux_flush_work(struct work_struct *);
228 extern bool linux_flush_delayed_work(struct delayed_work *);
229 extern bool linux_work_pending(struct work_struct *);
230 extern bool linux_work_busy(struct work_struct *);
232 #endif /* _LINUX_WORKQUEUE_H_ */