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
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  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
  49 #include <stdarg.h>
  50 #include <libcfs/linux/linux-time.h>
  51 #include <libcfs/linux/linux-mem.h>
  52 #include <libcfs/linux/linux-prim.h>
  53 #include <libcfs/linux/linux-lock.h>
  54 #include <libcfs/linux/linux-fs.h>
  55 #include <libcfs/linux/linux-tcpip.h>
  56 #include <libcfs/linux/linux-bitops.h>
  57 #include <libcfs/linux/linux-types.h>
  58 #include <libcfs/linux/kp30.h>
  59
  60 #ifdef HAVE_ASM_TYPES_H
  61 #include <asm/types.h>
  62 #endif
  63 #include <linux/types.h>
  64 #include <asm/timex.h>
  65 #include <linux/sched.h> /* THREAD_SIZE */
  66
  67 #define CFS_THREAD_SIZE   THREAD_SIZE
  68 #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
  69
  70 #if !defined(__x86_64__)
  71 # ifdef  __ia64__
  72 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
  73                           ((unsigned long)__builtin_dwarf_cfa() &       \
  74                            (THREAD_SIZE - 1)))
  75 # else
  76 #  define CDEBUG_STACK() (THREAD_SIZE -                                 \
  77                           ((unsigned long)__builtin_frame_address(0) &  \
  78                            (THREAD_SIZE - 1)))
  79 # endif /* __ia64__ */
  80
  81 #define __CHECK_STACK(file, func, line)                                 \
  82 do {                                                                    \
  83         unsigned long _stack = CDEBUG_STACK();                          \
  84                                                                         \
  85         if (_stack > 3*THREAD_SIZE/4 && _stack > libcfs_stack) {        \
  86                 libcfs_stack = _stack;                                  \
  87                 libcfs_debug_msg(NULL, DEBUG_SUBSYSTEM, D_WARNING,      \
  88                                  file, func, line,                      \
  89                                  "maximum lustre stack %lu\n", _stack); \
  90                 dump_stack();                                           \
  91               /*panic("LBUG");*/                                        \
  92         }                                                               \
  93 } while (0)
  94 #define CFS_CHECK_STACK()     __CHECK_STACK(__FILE__, __func__, __LINE__)
  95 #else /* __x86_64__ */
  96 #define CFS_CHECK_STACK() do { } while(0)
  97 #define CDEBUG_STACK() (0L)
  98 #endif /* __x86_64__ */
  99
 100 /* initial pid  */
 101 #define LUSTRE_LNET_PID          12345
 102
 103 #define ENTRY_NESTING_SUPPORT (1)
 104 #define ENTRY_NESTING   do {;} while (0)
 105 #define EXIT_NESTING   do {;} while (0)
 106 #define __current_nesting_level() (0)
 107
 108 /**
 109  * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
 110  *
 111  * Implementation is in linux-curproc.c
 112  */
 113 #define CFS_CURPROC_COMM_MAX (sizeof ((struct task_struct *)0)->comm)
 114
 115 #include <linux/capability.h>
 116 typedef kernel_cap_t cfs_kernel_cap_t;
 117
 118 /*
 119  * No stack-back-tracing in Linux for now.
 120  */
 121 struct cfs_stack_trace {
 122 };
 123
 124 /* long integer with size equal to pointer */
 125 typedef unsigned long ulong_ptr_t;
 126 typedef long long_ptr_t;
 127
 128 #ifndef WITH_WATCHDOG
 129 #define WITH_WATCHDOG
 130 #endif
 131
 132 #endif /* _LINUX_LIBCFS_H */