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
36 struct domainset;
37 struct thread;
38 struct task_struct;
39
40 extern int linux_alloc_current(struct thread *, int flags);
41 extern void linux_free_current(struct task_struct *);
42 extern struct domainset *linux_get_vm_domain_set(int node);
43
44 #define __current_unallocated(td) \
45 __predict_false((td)->td_lkpi_task == NULL)
46
47 static inline void
linux_set_current(struct thread * td)48 linux_set_current(struct thread *td)
49 {
50 if (__current_unallocated(td))
51 lkpi_alloc_current(td, M_WAITOK);
52 }
53
54 static inline int
linux_set_current_flags(struct thread * td,int flags)55 linux_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
65 typedef void fpu_safe_exec_cb_t(void *ctx);
66 void lkpi_fpu_safe_exec(fpu_safe_exec_cb_t func, void *ctx);
67
68 #endif /* _LINUXKPI_LINUX_COMPAT_H_ */
69