1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.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 AUTHORS 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 AUTHORS 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 * $FreeBSD$
28 */
29
30 #ifndef _OPENSOLARIS_SYS_PROC_H_
31 #define _OPENSOLARIS_SYS_PROC_H_
32
33 #include <sys/param.h>
34 #include <sys/kthread.h>
35 #include_next <sys/proc.h>
36 #include <sys/stdint.h>
37 #include <sys/smp.h>
38 #include <sys/sched.h>
39 #include <sys/lock.h>
40 #include <sys/mutex.h>
41 #include <sys/unistd.h>
42 #include <sys/kmem.h>
43 #include <sys/malloc.h>
44
45 #ifdef _KERNEL
46 #define CPU curcpu
47 #define minclsyspri PRIBIO
48 #define defclsyspri minclsyspri
49 /* Write issue taskq priority. */
50 #define wtqclsyspri ((PVM + PRIBIO) / 2)
51 #define maxclsyspri PVM
52 #define max_ncpus (mp_maxid + 1)
53 #define boot_max_ncpus (mp_maxid + 1)
54
55 #define TS_RUN 0
56
57 #define p0 proc0
58
59 #define t_tid td_tid
60
61 typedef short pri_t;
62 typedef struct thread _kthread;
63 typedef struct thread kthread_t;
64 typedef struct thread *kthread_id_t;
65 typedef struct proc proc_t;
66
67 extern proc_t *system_proc;
68
69 static __inline kthread_t *
do_thread_create(caddr_t stk,size_t stksize,void (* proc)(void *),void * arg,size_t len,proc_t * pp,int state,pri_t pri,const char * name)70 do_thread_create(caddr_t stk, size_t stksize, void (*proc)(void *), void *arg,
71 size_t len, proc_t *pp, int state, pri_t pri, const char *name)
72 {
73 kthread_t *td = NULL;
74 proc_t **ppp;
75 int error;
76
77 /*
78 * Be sure there are no surprises.
79 */
80 ASSERT0P(stk);
81 ASSERT0(len);
82 ASSERT(state == TS_RUN);
83
84 if (pp == &p0)
85 ppp = &system_proc;
86 else
87 ppp = &pp;
88 error = kproc_kthread_add(proc, arg, ppp, &td, RFSTOPPED,
89 stksize / PAGE_SIZE, "zfskern", "%s", name);
90 if (error == 0) {
91 thread_lock(td);
92 sched_prio(td, pri);
93 sched_add(td, SRQ_BORING);
94 }
95 return (td);
96 }
97
98 #define thread_create_named(name, stk, stksize, proc, arg, len, \
99 pp, state, pri) \
100 do_thread_create(stk, stksize, proc, arg, len, pp, state, pri, name)
101 #define thread_create(stk, stksize, proc, arg, len, pp, state, pri) \
102 do_thread_create(stk, stksize, proc, arg, len, pp, state, pri, #proc)
103 #define thread_exit() kthread_exit()
104
105 int uread(proc_t *, void *, size_t, uintptr_t);
106 int uwrite(proc_t *, void *, size_t, uintptr_t);
107
108 static inline boolean_t
zfs_proc_is_caller(proc_t * p)109 zfs_proc_is_caller(proc_t *p)
110 {
111 return (p == curproc);
112 }
113
114 #endif /* _KERNEL */
115 #endif /* _OPENSOLARIS_SYS_PROC_H_ */
116