drivers/staging/lustre/lustre/ptlrpc/ptlrpc_module.c

   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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 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 #define DEBUG_SUBSYSTEM S_RPC
  38
  39
  40 #include <obd_support.h>
  41 #include <obd_class.h>
  42 #include <lustre_net.h>
  43 #include <lustre_req_layout.h>
  44
  45 #include "ptlrpc_internal.h"
  46
  47 extern spinlock_t ptlrpc_last_xid_lock;
  48 #if RS_DEBUG
  49 extern spinlock_t ptlrpc_rs_debug_lock;
  50 #endif
  51 extern struct mutex pinger_mutex;
  52 extern struct mutex ptlrpcd_mutex;
  53
  54 __init int ptlrpc_init(void)
  55 {
  56         int rc, cleanup_phase = 0;
  57
  58         lustre_assert_wire_constants();
  59 #if RS_DEBUG
  60         spin_lock_init(&ptlrpc_rs_debug_lock);
  61 #endif
  62         mutex_init(&ptlrpc_all_services_mutex);
  63         mutex_init(&pinger_mutex);
  64         mutex_init(&ptlrpcd_mutex);
  65         ptlrpc_init_xid();
  66
  67         rc = req_layout_init();
  68         if (rc)
  69                 RETURN(rc);
  70
  71         rc = ptlrpc_hr_init();
  72         if (rc)
  73                 RETURN(rc);
  74
  75         cleanup_phase = 1;
  76
  77         rc = ptlrpc_init_portals();
  78         if (rc)
  79                 GOTO(cleanup, rc);
  80         cleanup_phase = 2;
  81
  82         rc = ptlrpc_connection_init();
  83         if (rc)
  84                 GOTO(cleanup, rc);
  85         cleanup_phase = 3;
  86
  87         ptlrpc_put_connection_superhack = ptlrpc_connection_put;
  88
  89         rc = ptlrpc_start_pinger();
  90         if (rc)
  91                 GOTO(cleanup, rc);
  92         cleanup_phase = 4;
  93
  94         rc = ldlm_init();
  95         if (rc)
  96                 GOTO(cleanup, rc);
  97         cleanup_phase = 5;
  98
  99         rc = sptlrpc_init();
 100         if (rc)
 101                 GOTO(cleanup, rc);
 102
 103         cleanup_phase = 7;
 104         rc = ptlrpc_nrs_init();
 105         if (rc)
 106                 GOTO(cleanup, rc);
 107
 108         cleanup_phase = 8;
 109         rc = tgt_mod_init();
 110         if (rc)
 111                 GOTO(cleanup, rc);
 112         RETURN(0);
 113
 114 cleanup:
 115         switch(cleanup_phase) {
 116         case 8:
 117                 ptlrpc_nrs_fini();
 118         case 7:
 119                 sptlrpc_fini();
 120         case 5:
 121                 ldlm_exit();
 122         case 4:
 123                 ptlrpc_stop_pinger();
 124         case 3:
 125                 ptlrpc_connection_fini();
 126         case 2:
 127                 ptlrpc_exit_portals();
 128         case 1:
 129                 ptlrpc_hr_fini();
 130                 req_layout_fini();
 131         default: ;
 132         }
 133
 134         return rc;
 135 }
 136
 137 static void __exit ptlrpc_exit(void)
 138 {
 139         tgt_mod_exit();
 140         ptlrpc_nrs_fini();
 141         sptlrpc_fini();
 142         ldlm_exit();
 143         ptlrpc_stop_pinger();
 144         ptlrpc_exit_portals();
 145         ptlrpc_hr_fini();
 146         ptlrpc_connection_fini();
 147 }
 148
 149 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 150 MODULE_DESCRIPTION("Lustre Request Processor and Lock Management");
 151 MODULE_LICENSE("GPL");
 152
 153 cfs_module(ptlrpc, "1.0.0", ptlrpc_init, ptlrpc_exit);