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#ifndef	_LINUXKPI_LINUX_COMPAT_H_
30#define	_LINUXKPI_LINUX_COMPAT_H_
31
32#include <sys/param.h>
33#include <sys/proc.h>
34#include <sys/malloc.h>
35
36struct domainset;
37struct thread;
38struct task_struct;
39
40extern int linux_alloc_current(struct thread *, int flags);
41extern void linux_free_current(struct task_struct *);
42extern struct domainset *linux_get_vm_domain_set(int node);
43
44#define	__current_unallocated(td)	\
45	__predict_false((td)->td_lkpi_task == NULL)
46
47static inline void
48linux_set_current(struct thread *td)
49{
50	if (__current_unallocated(td))
51		lkpi_alloc_current(td, M_WAITOK);
52}
53
54static inline int
55linux_set_current_flags(struct thread *td, int flags)
56{
57	if (__current_unallocated(td))
58		return (lkpi_alloc_current(td, flags));
59	return (0);
60}
61
62#define	compat_ptr(x)		((void *)(uintptr_t)x)
63#define	ptr_to_compat(x)	((uintptr_t)x)
64
65typedef void fpu_safe_exec_cb_t(void *ctx);
66void lkpi_fpu_safe_exec(fpu_safe_exec_cb_t func, void *ctx);
67
68#endif	/* _LINUXKPI_LINUX_COMPAT_H_ */
69