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