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[fs/lustre-release.git] / libcfs / include / libcfs / linux / libcfs.h
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 only,
10  * as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License version 2 for more details (a copy is included
16  * in the LICENSE file that accompanied this code).
17  *
18  * You should have received a copy of the GNU General Public License
19  * version 2 along with this program; If not, see
20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
21  *
22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23  * CA 95054 USA or visit www.sun.com if you need additional information or
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
30  * Use is subject to license terms.
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 #ifdef HAVE_ASM_TYPES_H
49 #include <asm/types.h>
50 #endif
51
52 #include <stdarg.h>
53 #include <libcfs/linux/linux-time.h>
54 #include <libcfs/linux/linux-mem.h>
55 #include <libcfs/linux/linux-prim.h>
56 #include <libcfs/linux/linux-lock.h>
57 #include <libcfs/linux/linux-fs.h>
58 #include <libcfs/linux/linux-tcpip.h>
59 #include <libcfs/linux/kp30.h>
60
61 #include <linux/types.h>
62 #include <asm/timex.h>
63 #include <linux/sched.h> /* THREAD_SIZE */
64
65 #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
66
67 #if !defined(__x86_64__)
68 # ifdef  __ia64__
69 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
70                           ((unsigned long)__builtin_dwarf_cfa() &       \
71                            (THREAD_SIZE - 1)))
72 # else
73 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
74                           ((unsigned long)__builtin_frame_address(0) &  \
75                            (THREAD_SIZE - 1)))
76 # endif /* __ia64__ */
77
78 #define __CHECK_STACK(file, func, line)                                 \
79 do {                                                                    \
80         unsigned long _stack = CDEBUG_STACK();                           \
81                                                                         \
82         if (_stack > 3*THREAD_SIZE/4 && _stack > libcfs_stack) {        \
83                 libcfs_stack = _stack;                                  \
84                 libcfs_debug_msg(NULL, DEBUG_SUBSYSTEM, D_WARNING,      \
85                                  file, func, line,                      \
86                                  "maximum lustre stack %lu\n", _stack); \
87               /*panic("LBUG");*/                                        \
88         }                                                               \
89 } while (0)
90 #define CHECK_STACK()     __CHECK_STACK(__FILE__, __func__, __LINE__)
91 #else /* __x86_64__ */
92 #define CHECK_STACK() do { } while(0)
93 #define CDEBUG_STACK() (0L)
94 #endif /* __x86_64__ */
95
96 /* initial pid  */
97 #define LUSTRE_LNET_PID          12345
98
99 #define ENTRY_NESTING_SUPPORT (1)
100 #define ENTRY_NESTING   do {;} while (0)
101 #define EXIT_NESTING   do {;} while (0)
102 #define __current_nesting_level() (0)
103
104 /**
105  * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
106  *
107  * Implementation is in linux-curproc.c
108  */
109 #define CFS_CURPROC_COMM_MAX (sizeof ((struct task_struct *)0)->comm)
110
111 #include <linux/capability.h>
112 typedef kernel_cap_t cfs_kernel_cap_t;
113
114 /*
115  * No stack-back-tracing in Linux for now.
116  */
117 struct cfs_stack_trace {
118 };
119
120 /* long integer with size equal to pointer */
121 typedef unsigned long ulong_ptr_t;
122 typedef long long_ptr_t;
123
124 #ifndef WITH_WATCHDOG
125 #define WITH_WATCHDOG
126 #endif
127
128 #endif /* _LINUX_LIBCFS_H */