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_SCHED_H_
32 #define _LINUX_SCHED_H_
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/sched.h>
38 #include <sys/sleepqueue.h>
40 #include <linux/types.h>
41 #include <linux/completion.h>
42 #include <linux/slab.h>
44 #include <asm/atomic.h>
46 #define MAX_SCHEDULE_TIMEOUT LONG_MAX
48 #define TASK_RUNNING 0
49 #define TASK_INTERRUPTIBLE 1
50 #define TASK_UNINTERRUPTIBLE 2
52 #define TASK_WAKEKILL 128
53 #define TASK_WAKING 256
56 struct thread *task_thread;
57 linux_task_fn_t *task_fn;
61 atomic_t kthread_flags;
65 unsigned bsd_ioctl_len;
66 struct completion parked;
67 struct completion exited;
70 #define current ((struct task_struct *)curthread->td_lkpi_task)
72 #define set_current_state(x) \
73 atomic_store_rel_int((volatile int *)¤t->state, (x))
74 #define __set_current_state(x) current->state = (x)
81 if (cold || SCHEDULER_STOPPED()) \
85 if (current->state == TASK_INTERRUPTIBLE || \
86 current->state == TASK_UNINTERRUPTIBLE) { \
87 sleepq_add(c, NULL, "task", SLEEPQ_SLEEP, 0); \
91 sched_relinquish(curthread); \
95 #define wake_up_process(x) \
100 c = (x)->task_thread; \
102 (x)->state = TASK_RUNNING; \
103 wakeup_swapper = sleepq_signal(c, SLEEPQ_SLEEP, 0, 0); \
105 if (wakeup_swapper) \
109 #define cond_resched() if (!cold) sched_relinquish(curthread)
111 #define sched_yield() sched_relinquish(curthread)
114 schedule_timeout(signed long timeout)
119 pause("lstim", timeout);
124 #endif /* _LINUX_SCHED_H_ */