lustre/include/linux/lustre_lite.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 _LINUX_LL_H
  38 #define _LINUX_LL_H
  39
  40 #ifndef _LL_H
  41 #error Do not #include this file directly. #include <lustre_lite.h> instead
  42 #endif
  43
  44 #ifdef __KERNEL__
  45
  46 #include <linux/version.h>
  47
  48 #include <asm/statfs.h>
  49
  50 #include <linux/fs.h>
  51 #include <linux/dcache.h>
  52 #include <linux/proc_fs.h>
  53
  54 #include <obd_class.h>
  55 #include <lustre_net.h>
  56 #include <lustre_mds.h>
  57 #include <lustre_ha.h>
  58
  59 #include <linux/rbtree.h>
  60 #include <linux/lustre_compat25.h>
  61 #include <linux/pagemap.h>
  62
  63 #ifdef HAVE_PERCPU_COUNTER
  64 #include <linux/percpu_counter.h>
  65
  66 typedef struct percpu_counter lcounter_t;
  67
  68 #define lcounter_read_positive(counter) percpu_counter_read_positive(counter)
  69 #define lcounter_read(counter)          (int)percpu_counter_read(counter)
  70 #define lcounter_inc(counter)           percpu_counter_inc(counter)
  71 #define lcounter_dec(counter)           percpu_counter_dec(counter)
  72
  73 #ifdef HAVE_PERCPU_2ND_ARG
  74 # define lcounter_init(counter)          percpu_counter_init(counter, 0)
  75 #else
  76 # define lcounter_init(counter)          percpu_counter_init(counter)
  77 #endif
  78
  79 #define lcounter_destroy(counter)       percpu_counter_destroy(counter)
  80
  81 #else
  82 typedef struct { atomic_t count; } lcounter_t;
  83
  84 #define lcounter_read(counter)          atomic_read(&counter->count)
  85 #define lcounter_read_positive(counter) lcounter_read(counter)
  86 #define lcounter_inc(counter)           atomic_inc(&counter->count)
  87 #define lcounter_dec(counter)           atomic_dec(&counter->count)
  88 #define lcounter_init(counter)          atomic_set(&counter->count, 0)
  89 #define lcounter_destroy(counter)
  90
  91 #endif /* if defined HAVE_PERCPU_COUNTER */
  92
  93 /* lprocfs.c */
  94 enum {
  95          LPROC_LL_DIRTY_HITS = 0,
  96          LPROC_LL_DIRTY_MISSES,
  97          LPROC_LL_WB_WRITEPAGE,
  98          LPROC_LL_WB_PRESSURE,
  99          LPROC_LL_WB_OK,
 100          LPROC_LL_WB_FAIL,
 101          LPROC_LL_READ_BYTES,
 102          LPROC_LL_WRITE_BYTES,
 103          LPROC_LL_BRW_READ,
 104          LPROC_LL_BRW_WRITE,
 105          LPROC_LL_IOCTL,
 106          LPROC_LL_OPEN,
 107          LPROC_LL_RELEASE,
 108          LPROC_LL_MAP,
 109          LPROC_LL_LLSEEK,
 110          LPROC_LL_FSYNC,
 111          LPROC_LL_SETATTR,
 112          LPROC_LL_TRUNC,
 113          LPROC_LL_LOCKLESS_TRUNC,
 114          LPROC_LL_FLOCK,
 115          LPROC_LL_GETATTR,
 116          LPROC_LL_STAFS,
 117          LPROC_LL_ALLOC_INODE,
 118          LPROC_LL_SETXATTR,
 119          LPROC_LL_GETXATTR,
 120          LPROC_LL_LISTXATTR,
 121          LPROC_LL_REMOVEXATTR,
 122          LPROC_LL_INODE_PERM,
 123          LPROC_LL_DIRECT_READ,
 124          LPROC_LL_DIRECT_WRITE,
 125          LPROC_LL_LOCKLESS_READ,
 126          LPROC_LL_LOCKLESS_WRITE,
 127          LPROC_LL_FILE_OPCODES
 128 };
 129
 130 #else
 131 #include <lustre/lustre_idl.h>
 132 #endif /* __KERNEL__ */
 133
 134 #endif