1/*
2 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 *  Copyright (C) 2007 The Regents of the University of California.
4 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
6 *  UCRL-CODE-235197
7 *
8 *  This file is part of the SPL, Solaris Porting Layer.
9 *
10 *  The SPL is free software; you can redistribute it and/or modify it
11 *  under the terms of the GNU General Public License as published by the
12 *  Free Software Foundation; either version 2 of the License, or (at your
13 *  option) any later version.
14 *
15 *  The SPL is distributed in the hope that it will be useful, but WITHOUT
16 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
18 *  for more details.
19 *
20 *  You should have received a copy of the GNU General Public License along
21 *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
22 */
23
24#ifndef _SPL_THREAD_H
25#define	_SPL_THREAD_H
26
27#include <linux/module.h>
28#include <linux/mm.h>
29#include <linux/spinlock.h>
30#include <linux/kthread.h>
31#include <sys/types.h>
32#include <sys/sysmacros.h>
33#include <sys/tsd.h>
34
35/*
36 * Thread interfaces
37 */
38#define	TP_MAGIC			0x53535353
39
40#define	TS_SLEEP			TASK_INTERRUPTIBLE
41#define	TS_RUN				TASK_RUNNING
42#define	TS_ZOMB				EXIT_ZOMBIE
43#define	TS_STOPPED			TASK_STOPPED
44
45typedef void (*thread_func_t)(void *);
46
47#define	thread_create_named(name, stk, stksize, func, arg, len,	\
48    pp, state, pri)	\
49	__thread_create(stk, stksize, (thread_func_t)func,		\
50	name, arg, len, pp, state, pri)
51
52#define	thread_create(stk, stksize, func, arg, len, pp, state, pri)	\
53	__thread_create(stk, stksize, (thread_func_t)func, #func,	\
54	arg, len, pp, state, pri)
55
56#define	thread_exit()			spl_thread_exit()
57#define	thread_join(t)			VERIFY(0)
58#define	curthread			current
59#define	getcomm()			current->comm
60#define	getpid()			current->pid
61
62extern kthread_t *__thread_create(caddr_t stk, size_t  stksize,
63    thread_func_t func, const char *name, void *args, size_t len, proc_t *pp,
64    int state, pri_t pri);
65extern struct task_struct *spl_kthread_create(int (*func)(void *),
66    void *data, const char namefmt[], ...);
67
68static inline __attribute__((noreturn)) void
69spl_thread_exit(void)
70{
71	tsd_exit();
72	SPL_KTHREAD_COMPLETE_AND_EXIT(NULL, 0);
73}
74
75extern proc_t p0;
76
77#ifdef HAVE_SIGINFO
78typedef kernel_siginfo_t spl_kernel_siginfo_t;
79#else
80typedef siginfo_t spl_kernel_siginfo_t;
81#endif
82
83#ifdef HAVE_SET_SPECIAL_STATE
84#define	spl_set_special_state(x) set_special_state((x))
85#else
86#define	spl_set_special_state(x) __set_current_state((x))
87#endif
88
89
90#endif  /* _SPL_THREAD_H */
91