drivers/staging/lustre/lnet/selftest/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) 2007, 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 #define DEBUG_SUBSYSTEM S_LNET
  38
  39 #include "selftest.h"
  40
  41 enum {
  42         LST_INIT_NONE = 0,
  43         LST_INIT_WI_SERIAL,
  44         LST_INIT_WI_TEST,
  45         LST_INIT_RPC,
  46         LST_INIT_FW,
  47         LST_INIT_CONSOLE
  48 };
  49
  50 extern int lstcon_console_init(void);
  51 extern int lstcon_console_fini(void);
  52
  53 static int lst_init_step = LST_INIT_NONE;
  54
  55 struct cfs_wi_sched *lst_sched_serial;
  56 struct cfs_wi_sched **lst_sched_test;
  57
  58 static void
  59 lnet_selftest_fini(void)
  60 {
  61         int i;
  62
  63         switch (lst_init_step) {
  64         case LST_INIT_CONSOLE:
  65                 lstcon_console_fini();
  66         case LST_INIT_FW:
  67                 sfw_shutdown();
  68         case LST_INIT_RPC:
  69                 srpc_shutdown();
  70         case LST_INIT_WI_TEST:
  71                 for (i = 0;
  72                      i < cfs_cpt_number(lnet_cpt_table()); i++) {
  73                         if (!lst_sched_test[i])
  74                                 continue;
  75                         cfs_wi_sched_destroy(lst_sched_test[i]);
  76                 }
  77                 LIBCFS_FREE(lst_sched_test,
  78                             sizeof(lst_sched_test[0]) *
  79                             cfs_cpt_number(lnet_cpt_table()));
  80                 lst_sched_test = NULL;
  81
  82         case LST_INIT_WI_SERIAL:
  83                 cfs_wi_sched_destroy(lst_sched_serial);
  84                 lst_sched_serial = NULL;
  85         case LST_INIT_NONE:
  86                 break;
  87         default:
  88                 LBUG();
  89         }
  90 }
  91
  92 static int
  93 lnet_selftest_init(void)
  94 {
  95         int nscheds;
  96         int rc;
  97         int i;
  98
  99         rc = cfs_wi_sched_create("lst_s", lnet_cpt_table(), CFS_CPT_ANY,
 100                                  1, &lst_sched_serial);
 101         if (rc != 0) {
 102                 CERROR("Failed to create serial WI scheduler for LST\n");
 103                 return rc;
 104         }
 105         lst_init_step = LST_INIT_WI_SERIAL;
 106
 107         nscheds = cfs_cpt_number(lnet_cpt_table());
 108         LIBCFS_ALLOC(lst_sched_test, sizeof(lst_sched_test[0]) * nscheds);
 109         if (!lst_sched_test)
 110                 goto error;
 111
 112         lst_init_step = LST_INIT_WI_TEST;
 113         for (i = 0; i < nscheds; i++) {
 114                 int nthrs = cfs_cpt_weight(lnet_cpt_table(), i);
 115
 116                 /* reserve at least one CPU for LND */
 117                 nthrs = max(nthrs - 1, 1);
 118                 rc = cfs_wi_sched_create("lst_t", lnet_cpt_table(), i,
 119                                          nthrs, &lst_sched_test[i]);
 120                 if (rc != 0) {
 121                         CERROR("Failed to create CPT affinity WI scheduler %d for LST\n",
 122                                i);
 123                         goto error;
 124                 }
 125         }
 126
 127         rc = srpc_startup();
 128         if (rc != 0) {
 129                 CERROR("LST can't startup rpc\n");
 130                 goto error;
 131         }
 132         lst_init_step = LST_INIT_RPC;
 133
 134         rc = sfw_startup();
 135         if (rc != 0) {
 136                 CERROR("LST can't startup framework\n");
 137                 goto error;
 138         }
 139         lst_init_step = LST_INIT_FW;
 140
 141         rc = lstcon_console_init();
 142         if (rc != 0) {
 143                 CERROR("LST can't startup console\n");
 144                 goto error;
 145         }
 146         lst_init_step = LST_INIT_CONSOLE;
 147         return 0;
 148 error:
 149         lnet_selftest_fini();
 150         return rc;
 151 }
 152
 153 MODULE_DESCRIPTION("LNet Selftest");
 154 MODULE_LICENSE("GPL");
 155 MODULE_VERSION("0.9.0");
 156
 157 module_init(lnet_selftest_init);
 158 module_exit(lnet_selftest_fini);