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LU-5327 libcfs: add libcfs/types.h
[fs/lustre-release.git] / libcfs / include / libcfs / linux / libcfs.h
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2012, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  */
36
37 #ifndef __LIBCFS_LINUX_LIBCFS_H__
38 #define __LIBCFS_LINUX_LIBCFS_H__
39
40 #ifndef __LIBCFS_LIBCFS_H__
41 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
42 #endif
43
44 #ifndef __KERNEL__
45 #error This include is only for kernel use.
46 #endif
47
48
49 #include <stdarg.h>
50 #include <libcfs/linux/linux-cpu.h>
51 #include <libcfs/linux/linux-time.h>
52 #include <libcfs/linux/linux-mem.h>
53 #include <libcfs/linux/linux-prim.h>
54 #include <libcfs/linux/linux-lock.h>
55 #include <libcfs/linux/linux-fs.h>
56 #include <libcfs/linux/linux-tcpip.h>
57 #include <libcfs/linux/kp30.h>
58
59 #ifdef HAVE_ASM_TYPES_H
60 #include <asm/types.h>
61 #endif
62 #include <linux/types.h>
63 #include <asm/timex.h>
64 #include <linux/sched.h> /* THREAD_SIZE */
65 #include <linux/rbtree.h>
66 #include <linux/bitops.h>
67
68 #if !defined(__x86_64__)
69 # ifdef  __ia64__
70 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
71                           ((unsigned long)__builtin_dwarf_cfa() &       \
72                            (THREAD_SIZE - 1)))
73 # else
74 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
75                           ((unsigned long)__builtin_frame_address(0) &  \
76                            (THREAD_SIZE - 1)))
77 # endif /* __ia64__ */
78
79 #define __CHECK_STACK(msgdata, mask, cdls)                              \
80 do {                                                                    \
81         if (unlikely(CDEBUG_STACK() > libcfs_stack)) {                  \
82                 LIBCFS_DEBUG_MSG_DATA_INIT(msgdata, D_WARNING, NULL);   \
83                 libcfs_stack = CDEBUG_STACK();                          \
84                 libcfs_debug_msg(msgdata,                               \
85                                  "maximum lustre stack %lu\n",          \
86                                  CDEBUG_STACK());                       \
87                 (msgdata)->msg_mask = mask;                             \
88                 (msgdata)->msg_cdls = cdls;                             \
89                 dump_stack();                                           \
90               /*panic("LBUG");*/                                        \
91         }                                                               \
92 } while (0)
93 #define CFS_CHECK_STACK(msgdata, mask, cdls)  __CHECK_STACK(msgdata, mask, cdls)
94 #else /* __x86_64__ */
95 #define CFS_CHECK_STACK(msgdata, mask, cdls) do {} while(0)
96 #define CDEBUG_STACK() (0L)
97 #endif /* __x86_64__ */
98
99 /* initial pid  */
100 #define LUSTRE_LNET_PID          12345
101
102 #define ENTRY_NESTING_SUPPORT (1)
103 #define ENTRY_NESTING   do {;} while (0)
104 #define EXIT_NESTING   do {;} while (0)
105 #define __current_nesting_level() (0)
106
107 /**
108  * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
109  *
110  * Implementation is in linux-curproc.c
111  */
112 #define CFS_CURPROC_COMM_MAX (sizeof ((struct task_struct *)0)->comm)
113
114 #include <linux/capability.h>
115
116 /*
117  * No stack-back-tracing in Linux for now.
118  */
119 struct cfs_stack_trace {
120 };
121
122 #ifndef WITH_WATCHDOG
123 #define WITH_WATCHDOG
124 #endif
125
126 /*
127  * Macros to access common characteristics of "current" UNIX process.
128  */
129 #define current_pid()             (current->pid)
130 #define current_umask()           (current->fs->umask)
131 #define current_comm()            (current->comm)
132
133 /* check if task is running in compat mode.*/
134 int current_is_32bit(void);
135
136 #endif /* _LINUX_LIBCFS_H */