lustre/mdc/lproc_mdc.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) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2015, 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 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <linux/version.h>
  39 #include <linux/vfs.h>
  40 #include <obd_class.h>
  41 #include <lprocfs_status.h>
  42
  43 #include "mdc_internal.h"
  44
  45 #ifdef CONFIG_PROC_FS
  46 static int mdc_active_seq_show(struct seq_file *m, void *v)
  47 {
  48         struct obd_device *dev = m->private;
  49         int rc;
  50
  51         LPROCFS_CLIMP_CHECK(dev);
  52         rc = seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return rc;
  55 }
  56
  57 static ssize_t mdc_active_seq_write(struct file *file,
  58                                     const char __user *buffer,
  59                                     size_t count, loff_t *off)
  60 {
  61         struct obd_device *dev;
  62         int val, rc;
  63
  64         dev = ((struct seq_file *)file->private_data)->private;
  65         rc = lprocfs_write_helper(buffer, count, &val);
  66         if (rc)
  67                 return rc;
  68         if (val < 0 || val > 1)
  69                 return -ERANGE;
  70
  71         /* opposite senses */
  72         if (dev->u.cli.cl_import->imp_deactive == val)
  73                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  74         else
  75                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  76
  77         return count;
  78 }
  79 LPROC_SEQ_FOPS(mdc_active);
  80
  81 static int mdc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  82 {
  83         struct obd_device *dev = m->private;
  84         __u32 max;
  85         int rc;
  86
  87         max = obd_get_max_rpcs_in_flight(&dev->u.cli);
  88         rc = seq_printf(m, "%u\n", max);
  89
  90         return rc;
  91 }
  92
  93 static ssize_t mdc_max_rpcs_in_flight_seq_write(struct file *file,
  94                                                 const char __user *buffer,
  95                                                 size_t count,
  96                                                 loff_t *off)
  97 {
  98         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  99         int val;
 100         int rc;
 101
 102         rc = lprocfs_write_helper(buffer, count, &val);
 103         if (rc == 0)
 104                 rc = obd_set_max_rpcs_in_flight(&dev->u.cli, val);
 105
 106         if (rc != 0)
 107                 count = rc;
 108
 109         return count;
 110 }
 111 LPROC_SEQ_FOPS(mdc_max_rpcs_in_flight);
 112
 113
 114 static int mdc_max_mod_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
 115 {
 116         struct obd_device *dev = m->private;
 117         __u16 max;
 118         int rc;
 119
 120         max = obd_get_max_mod_rpcs_in_flight(&dev->u.cli);
 121         rc = seq_printf(m, "%hu\n", max);
 122
 123         return rc;
 124 }
 125
 126 static ssize_t mdc_max_mod_rpcs_in_flight_seq_write(struct file *file,
 127                                                     const char __user *buffer,
 128                                                     size_t count,
 129                                                     loff_t *off)
 130 {
 131         struct obd_device *dev =
 132                         ((struct seq_file *)file->private_data)->private;
 133         int val;
 134         int rc;
 135
 136         rc = lprocfs_write_helper(buffer, count, &val);
 137         if (rc != 0)
 138                 return rc;
 139
 140         if (val < 0 || val > USHRT_MAX)
 141                 return -ERANGE;
 142
 143         rc = obd_set_max_mod_rpcs_in_flight(&dev->u.cli, val);
 144         if (rc != 0)
 145                 count = rc;
 146
 147         return count;
 148 }
 149 LPROC_SEQ_FOPS(mdc_max_mod_rpcs_in_flight);
 150
 151
 152 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 153 {
 154         struct obd_device *dev = seq->private;
 155
 156         return obd_mod_rpc_stats_seq_show(&dev->u.cli, seq);
 157 }
 158
 159
 160 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
 161                                        const char __user *buf,
 162                                        size_t len, loff_t *off)
 163 {
 164         struct seq_file *seq = file->private_data;
 165         struct obd_device *dev = seq->private;
 166         struct client_obd *cli = &dev->u.cli;
 167
 168         lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
 169
 170         return len;
 171 }
 172 LPROC_SEQ_FOPS(mdc_rpc_stats);
 173
 174
 175 LPROC_SEQ_FOPS_WO_TYPE(mdc, ping);
 176
 177 LPROC_SEQ_FOPS_RO_TYPE(mdc, uuid);
 178 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
 179 LPROC_SEQ_FOPS_RO_TYPE(mdc, blksize);
 180 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytestotal);
 181 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesfree);
 182 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesavail);
 183 LPROC_SEQ_FOPS_RO_TYPE(mdc, filestotal);
 184 LPROC_SEQ_FOPS_RO_TYPE(mdc, filesfree);
 185 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 186 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
 187 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
 188 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
 189
 190 static int mdc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 191 {
 192         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 193 }
 194 LPROC_SEQ_FOPS_RO(mdc_obd_max_pages_per_rpc);
 195
 196 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 197 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 198
 199 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 200         { .name =       "uuid",
 201           .fops =       &mdc_uuid_fops          },
 202         { .name =       "ping",
 203           .fops =       &mdc_ping_fops,
 204           .proc_mode =  0222                    },
 205         { .name =       "connect_flags",
 206           .fops =       &mdc_connect_flags_fops },
 207         { .name =       "blocksize",
 208           .fops =       &mdc_blksize_fops       },
 209         { .name =       "kbytestotal",
 210           .fops =       &mdc_kbytestotal_fops   },
 211         { .name =       "kbytesfree",
 212           .fops =       &mdc_kbytesfree_fops    },
 213         { .name =       "kbytesavail",
 214           .fops =       &mdc_kbytesavail_fops   },
 215         { .name =       "filestotal",
 216           .fops =       &mdc_filestotal_fops    },
 217         { .name =       "filesfree",
 218           .fops =       &mdc_filesfree_fops     },
 219         { .name =       "mds_server_uuid",
 220           .fops =       &mdc_server_uuid_fops   },
 221         { .name =       "mds_conn_uuid",
 222           .fops =       &mdc_conn_uuid_fops     },
 223         /*
 224          * FIXME: below proc entry is provided, but not in used, instead
 225          * sbi->sb_md_brw_size is used, the per obd variable should be used
 226          * when CMD is enabled, and dir pages are managed in MDC layer.
 227          * Remember to enable proc write function.
 228          */
 229         { .name =       "max_pages_per_rpc",
 230           .fops =       &mdc_obd_max_pages_per_rpc_fops },
 231         { .name =       "max_rpcs_in_flight",
 232           .fops =       &mdc_max_rpcs_in_flight_fops    },
 233         { .name =       "max_mod_rpcs_in_flight",
 234           .fops =       &mdc_max_mod_rpcs_in_flight_fops        },
 235         { .name =       "timeouts",
 236           .fops =       &mdc_timeouts_fops              },
 237         { .name =       "import",
 238           .fops =       &mdc_import_fops                },
 239         { .name =       "state",
 240           .fops =       &mdc_state_fops                 },
 241         { .name =       "pinger_recov",
 242           .fops =       &mdc_pinger_recov_fops          },
 243         { .name =       "rpc_stats",
 244           .fops =       &mdc_rpc_stats_fops             },
 245         { .name =       "active",
 246           .fops =       &mdc_active_fops                },
 247         { NULL }
 248 };
 249 #endif /* CONFIG_PROC_FS */