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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  */
  32 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <linux/version.h>
  35 #include <linux/vfs.h>
  36 #include <obd_class.h>
  37 #include <lprocfs_status.h>
  38
  39 #include "mdc_internal.h"
  40
  41 #ifdef CONFIG_PROC_FS
  42 static int mdc_active_seq_show(struct seq_file *m, void *v)
  43 {
  44         struct obd_device *dev = m->private;
  45
  46         LPROCFS_CLIMP_CHECK(dev);
  47         seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  48         LPROCFS_CLIMP_EXIT(dev);
  49         return 0;
  50 }
  51
  52 static ssize_t mdc_active_seq_write(struct file *file,
  53                                     const char __user *buffer,
  54                                     size_t count, loff_t *off)
  55 {
  56         struct obd_device *dev;
  57         int rc;
  58         __s64 val;
  59
  60         dev = ((struct seq_file *)file->private_data)->private;
  61         rc = lprocfs_str_to_s64(buffer, count, &val);
  62         if (rc)
  63                 return rc;
  64         if (val < 0 || val > 1)
  65                 return -ERANGE;
  66
  67         /* opposite senses */
  68         if (dev->u.cli.cl_import->imp_deactive == val)
  69                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  70         else
  71                 CDEBUG(D_CONFIG, "activate %llu: ignoring repeat request\n",
  72                        val);
  73
  74         return count;
  75 }
  76 LPROC_SEQ_FOPS(mdc_active);
  77
  78 static int mdc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  79 {
  80         struct obd_device *dev = m->private;
  81         __u32 max;
  82
  83         max = obd_get_max_rpcs_in_flight(&dev->u.cli);
  84         seq_printf(m, "%u\n", max);
  85
  86         return 0;
  87 }
  88
  89 static ssize_t mdc_max_rpcs_in_flight_seq_write(struct file *file,
  90                                                 const char __user *buffer,
  91                                                 size_t count,
  92                                                 loff_t *off)
  93 {
  94         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  95         __s64 val;
  96         int rc;
  97
  98         rc = lprocfs_str_to_s64(buffer, count, &val);
  99         if (rc)
 100                 return rc;
 101
 102         if (val < 0 || val > UINT_MAX)
 103                 return -ERANGE;
 104
 105         rc = obd_set_max_rpcs_in_flight(&dev->u.cli, val);
 106         if (rc)
 107                 return 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
 119         max = obd_get_max_mod_rpcs_in_flight(&dev->u.cli);
 120         seq_printf(m, "%hu\n", max);
 121
 122         return 0;
 123 }
 124
 125 static ssize_t mdc_max_mod_rpcs_in_flight_seq_write(struct file *file,
 126                                                     const char __user *buffer,
 127                                                     size_t count,
 128                                                     loff_t *off)
 129 {
 130         struct obd_device *dev =
 131                         ((struct seq_file *)file->private_data)->private;
 132         __s64 val;
 133         int rc;
 134
 135         rc = lprocfs_str_to_s64(buffer, count, &val);
 136         if (rc)
 137                 return rc;
 138
 139         if (val < 0 || val > USHRT_MAX)
 140                 return -ERANGE;
 141
 142         rc = obd_set_max_mod_rpcs_in_flight(&dev->u.cli, val);
 143         if (rc)
 144                 count = rc;
 145
 146         return count;
 147 }
 148 LPROC_SEQ_FOPS(mdc_max_mod_rpcs_in_flight);
 149
 150
 151 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 152 {
 153         struct obd_device *dev = seq->private;
 154
 155         return obd_mod_rpc_stats_seq_show(&dev->u.cli, seq);
 156 }
 157
 158
 159 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
 160                                        const char __user *buf,
 161                                        size_t len, loff_t *off)
 162 {
 163         struct seq_file *seq = file->private_data;
 164         struct obd_device *dev = seq->private;
 165         struct client_obd *cli = &dev->u.cli;
 166
 167         lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
 168
 169         return len;
 170 }
 171 LPROC_SEQ_FOPS(mdc_rpc_stats);
 172
 173
 174 LPROC_SEQ_FOPS_WO_TYPE(mdc, ping);
 175
 176 LPROC_SEQ_FOPS_RO_TYPE(mdc, uuid);
 177 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
 178 LPROC_SEQ_FOPS_RO_TYPE(mdc, blksize);
 179 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytestotal);
 180 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesfree);
 181 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesavail);
 182 LPROC_SEQ_FOPS_RO_TYPE(mdc, filestotal);
 183 LPROC_SEQ_FOPS_RO_TYPE(mdc, filesfree);
 184 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 185 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
 186 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
 187 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
 188
 189 static int mdc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 190 {
 191         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 192 }
 193 LPROC_SEQ_FOPS_RO(mdc_obd_max_pages_per_rpc);
 194
 195 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 196 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 197
 198 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 199         { .name =       "uuid",
 200           .fops =       &mdc_uuid_fops          },
 201         { .name =       "ping",
 202           .fops =       &mdc_ping_fops,
 203           .proc_mode =  0222                    },
 204         { .name =       "connect_flags",
 205           .fops =       &mdc_connect_flags_fops },
 206         { .name =       "blocksize",
 207           .fops =       &mdc_blksize_fops       },
 208         { .name =       "kbytestotal",
 209           .fops =       &mdc_kbytestotal_fops   },
 210         { .name =       "kbytesfree",
 211           .fops =       &mdc_kbytesfree_fops    },
 212         { .name =       "kbytesavail",
 213           .fops =       &mdc_kbytesavail_fops   },
 214         { .name =       "filestotal",
 215           .fops =       &mdc_filestotal_fops    },
 216         { .name =       "filesfree",
 217           .fops =       &mdc_filesfree_fops     },
 218         { .name =       "mds_server_uuid",
 219           .fops =       &mdc_server_uuid_fops   },
 220         { .name =       "mds_conn_uuid",
 221           .fops =       &mdc_conn_uuid_fops     },
 222         /*
 223          * FIXME: below proc entry is provided, but not in used, instead
 224          * sbi->sb_md_brw_size is used, the per obd variable should be used
 225          * when CMD is enabled, and dir pages are managed in MDC layer.
 226          * Remember to enable proc write function.
 227          */
 228         { .name =       "max_pages_per_rpc",
 229           .fops =       &mdc_obd_max_pages_per_rpc_fops },
 230         { .name =       "max_rpcs_in_flight",
 231           .fops =       &mdc_max_rpcs_in_flight_fops    },
 232         { .name =       "max_mod_rpcs_in_flight",
 233           .fops =       &mdc_max_mod_rpcs_in_flight_fops        },
 234         { .name =       "timeouts",
 235           .fops =       &mdc_timeouts_fops              },
 236         { .name =       "import",
 237           .fops =       &mdc_import_fops                },
 238         { .name =       "state",
 239           .fops =       &mdc_state_fops                 },
 240         { .name =       "pinger_recov",
 241           .fops =       &mdc_pinger_recov_fops          },
 242         { .name =       "rpc_stats",
 243           .fops =       &mdc_rpc_stats_fops             },
 244         { .name =       "active",
 245           .fops =       &mdc_active_fops                },
 246         { NULL }
 247 };
 248 #endif /* CONFIG_PROC_FS */