1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* $OpenBSD: workqueue.h,v 1.2 2019/05/11 14:39:13 jsg Exp $ */
/*
* Copyright (c) 2015 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_WORKQUEUE_H
#define _LINUX_WORKQUEUE_H
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/task.h>
#include <sys/timeout.h>
#include <linux/bitops.h>
#include <linux/atomic.h>
#include <linux/rcupdate.h>
#include <linux/kernel.h>
#include <linux/lockdep.h>
#include <linux/timer.h>
struct workqueue_struct;
extern struct workqueue_struct *system_wq;
extern struct workqueue_struct *system_unbound_wq;
extern struct workqueue_struct *system_long_wq;
#define WQ_HIGHPRI 1
#define WQ_FREEZABLE 2
#define WQ_UNBOUND 4
static inline struct workqueue_struct *
alloc_workqueue(const char *name, int flags, int max_active)
{
struct taskq *tq = taskq_create(name, 1, IPL_TTY, 0);
return (struct workqueue_struct *)tq;
}
static inline struct workqueue_struct *
alloc_ordered_workqueue(const char *name, int flags)
{
struct taskq *tq = taskq_create(name, 1, IPL_TTY, 0);
return (struct workqueue_struct *)tq;
}
static inline struct workqueue_struct *
create_singlethread_workqueue(const char *name)
{
struct taskq *tq = taskq_create(name, 1, IPL_TTY, 0);
return (struct workqueue_struct *)tq;
}
static inline void
destroy_workqueue(struct workqueue_struct *wq)
{
taskq_destroy((struct taskq *)wq);
}
struct work_struct {
struct task task;
struct taskq *tq;
};
typedef void (*work_func_t)(struct work_struct *);
static inline void
INIT_WORK(struct work_struct *work, work_func_t func)
{
work->tq = (struct taskq *)system_wq;
task_set(&work->task, (void (*)(void *))func, work);
}
#define INIT_WORK_ONSTACK(x, y) INIT_WORK((x), (y))
static inline bool
queue_work(struct workqueue_struct *wq, struct work_struct *work)
{
work->tq = (struct taskq *)wq;
return task_add(work->tq, &work->task);
}
static inline void
cancel_work_sync(struct work_struct *work)
{
task_del(work->tq, &work->task);
}
#define work_pending(work) task_pending(&(work)->task)
struct delayed_work {
struct work_struct work;
struct timeout to;
struct taskq *tq;
};
#define system_power_efficient_wq ((struct workqueue_struct *)systq)
static inline struct delayed_work *
to_delayed_work(struct work_struct *work)
{
return container_of(work, struct delayed_work, work);
}
static void
__delayed_work_tick(void *arg)
{
struct delayed_work *dwork = arg;
task_add(dwork->tq, &dwork->work.task);
}
static inline void
INIT_DELAYED_WORK(struct delayed_work *dwork, work_func_t func)
{
INIT_WORK(&dwork->work, func);
timeout_set(&dwork->to, __delayed_work_tick, &dwork->work);
}
static inline void
INIT_DELAYED_WORK_ONSTACK(struct delayed_work *dwork, work_func_t func)
{
INIT_WORK(&dwork->work, func);
timeout_set(&dwork->to, __delayed_work_tick, &dwork->work);
}
static inline bool
schedule_work(struct work_struct *work)
{
return task_add(work->tq, &work->task);
}
static inline bool
schedule_delayed_work(struct delayed_work *dwork, int jiffies)
{
dwork->tq = (struct taskq *)system_wq;
return timeout_add(&dwork->to, jiffies);
}
static inline bool
queue_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, int jiffies)
{
dwork->tq = (struct taskq *)wq;
return timeout_add(&dwork->to, jiffies);
}
static inline bool
mod_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, int jiffies)
{
dwork->tq = (struct taskq *)wq;
return (timeout_add(&dwork->to, jiffies) == 0);
}
static inline bool
cancel_delayed_work(struct delayed_work *dwork)
{
if (timeout_del(&dwork->to))
return true;
return task_del(dwork->tq, &dwork->work.task);
}
static inline bool
cancel_delayed_work_sync(struct delayed_work *dwork)
{
if (timeout_del(&dwork->to))
return true;
return task_del(dwork->tq, &dwork->work.task);
}
static inline bool
delayed_work_pending(struct delayed_work *dwork)
{
if (timeout_pending(&dwork->to))
return true;
return task_pending(&dwork->work.task);
}
void flush_workqueue(struct workqueue_struct *);
bool flush_work(struct work_struct *);
bool flush_delayed_work(struct delayed_work *);
#define flush_scheduled_work() flush_workqueue(system_wq)
#define drain_workqueue(x) flush_workqueue(x)
#define destroy_work_on_stack(x)
#define destroy_delayed_work_on_stack(x)
#endif
|
