FreeBSD/Linux Kernel Cross Reference
sys/sys/gtaskqueue.h
1 /*-
2 * Copyright (c) 2014 Jeffrey Roberson <jeff@freebsd.org>
3 * Copyright (c) 2016 Matthew Macy <mmacy@nextbsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/11.2/sys/sys/gtaskqueue.h 328805 2018-02-02 18:38:29Z mav $
28 */
29
30 #ifndef _SYS_GTASKQUEUE_H_
31 #define _SYS_GTASKQUEUE_H_
32 #include <sys/taskqueue.h>
33
34 #ifndef _KERNEL
35 #error "no user-servicable parts inside"
36 #endif
37
38 struct gtaskqueue;
39 typedef void (*gtaskqueue_enqueue_fn)(void *context);
40
41 /*
42 * Taskqueue groups. Manages dynamic thread groups and irq binding for
43 * device and other tasks.
44 */
45
46 void gtaskqueue_block(struct gtaskqueue *queue);
47 void gtaskqueue_unblock(struct gtaskqueue *queue);
48
49 int gtaskqueue_cancel(struct gtaskqueue *queue, struct gtask *gtask);
50 void gtaskqueue_drain(struct gtaskqueue *queue, struct gtask *task);
51 void gtaskqueue_drain_all(struct gtaskqueue *queue);
52
53 int grouptaskqueue_enqueue(struct gtaskqueue *queue, struct gtask *task);
54 void taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *grptask,
55 void *uniq, int irq, char *name);
56 int taskqgroup_attach_cpu(struct taskqgroup *qgroup, struct grouptask *grptask,
57 void *uniq, int cpu, int irq, char *name);
58 void taskqgroup_detach(struct taskqgroup *qgroup, struct grouptask *gtask);
59 struct taskqgroup *taskqgroup_create(char *name);
60 void taskqgroup_destroy(struct taskqgroup *qgroup);
61 int taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride);
62
63 #define TASK_ENQUEUED 0x1
64 #define TASK_SKIP_WAKEUP 0x2
65
66
67 #define GTASK_INIT(task, flags, priority, func, context) do { \
68 (task)->ta_flags = flags; \
69 (task)->ta_priority = (priority); \
70 (task)->ta_func = (func); \
71 (task)->ta_context = (context); \
72 } while (0)
73
74 #define GROUPTASK_INIT(gtask, priority, func, context) \
75 GTASK_INIT(&(gtask)->gt_task, TASK_SKIP_WAKEUP, priority, func, context)
76
77 #define GROUPTASK_ENQUEUE(gtask) \
78 grouptaskqueue_enqueue((gtask)->gt_taskqueue, &(gtask)->gt_task)
79
80 #define TASKQGROUP_DECLARE(name) \
81 extern struct taskqgroup *qgroup_##name
82
83 #define TASKQGROUP_DEFINE(name, cnt, stride) \
84 \
85 struct taskqgroup *qgroup_##name; \
86 \
87 static void \
88 taskqgroup_define_##name(void *arg) \
89 { \
90 qgroup_##name = taskqgroup_create(#name); \
91 } \
92 \
93 SYSINIT(taskqgroup_##name, SI_SUB_TASKQ, SI_ORDER_FIRST, \
94 taskqgroup_define_##name, NULL); \
95 \
96 static void \
97 taskqgroup_adjust_##name(void *arg) \
98 { \
99 taskqgroup_adjust(qgroup_##name, (cnt), (stride)); \
100 } \
101 \
102 SYSINIT(taskqgroup_adj_##name, SI_SUB_SMP, SI_ORDER_ANY, \
103 taskqgroup_adjust_##name, NULL)
104
105 TASKQGROUP_DECLARE(net);
106 TASKQGROUP_DECLARE(softirq);
107
108 #endif /* !_SYS_GTASKQUEUE_H_ */
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