xref: /freebsd/sys/compat/linuxkpi/common/include/linux/compat.h (revision 643ac419fafba89f5adda0e0ea75b538727453fb)
1 /*-
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.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice unmodified, this list of conditions, and the following
13  *    disclaimer.
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.
17  *
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.
28  *
29  * $FreeBSD$
30  */
31 #ifndef	_LINUXKPI_LINUX_COMPAT_H_
32 #define	_LINUXKPI_LINUX_COMPAT_H_
33 
34 #include <sys/param.h>
35 #include <sys/proc.h>
36 #include <sys/malloc.h>
37 
38 struct domainset;
39 struct thread;
40 struct task_struct;
41 
42 extern int linux_alloc_current(struct thread *, int flags);
43 extern void linux_free_current(struct task_struct *);
44 extern struct domainset *linux_get_vm_domain_set(int node);
45 
46 static inline void
47 linux_set_current(struct thread *td)
48 {
49 	if (__predict_false(td->td_lkpi_task == NULL))
50 		lkpi_alloc_current(td, M_WAITOK);
51 }
52 
53 static inline int
54 linux_set_current_flags(struct thread *td, int flags)
55 {
56 	if (__predict_false(td->td_lkpi_task == NULL))
57 		return (lkpi_alloc_current(td, flags));
58 	return (0);
59 }
60 
61 #endif	/* _LINUXKPI_LINUX_COMPAT_H_ */
62