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, 2014, 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
  47 static int mdc_max_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  48 {
  49         struct obd_device *dev = m->private;
  50         __u32 max;
  51         int rc;
  52
  53         max = obd_get_max_rpcs_in_flight(&dev->u.cli);
  54         rc = seq_printf(m, "%u\n", max);
  55
  56         return rc;
  57 }
  58
  59 static ssize_t mdc_max_rpcs_in_flight_seq_write(struct file *file,
  60                                                 const char __user *buffer,
  61                                                 size_t count,
  62                                                 loff_t *off)
  63 {
  64         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  65         int val;
  66         int rc;
  67
  68         rc = lprocfs_write_helper(buffer, count, &val);
  69         if (rc == 0)
  70                 rc = obd_set_max_rpcs_in_flight(&dev->u.cli, val);
  71
  72         if (rc != 0)
  73                 count = rc;
  74
  75         return count;
  76 }
  77 LPROC_SEQ_FOPS(mdc_max_rpcs_in_flight);
  78
  79
  80 static int mdc_max_mod_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
  81 {
  82         struct obd_device *dev = m->private;
  83         __u16 max;
  84         int rc;
  85
  86         max = obd_get_max_mod_rpcs_in_flight(&dev->u.cli);
  87         rc = seq_printf(m, "%hu\n", max);
  88
  89         return rc;
  90 }
  91
  92 static ssize_t mdc_max_mod_rpcs_in_flight_seq_write(struct file *file,
  93                                                     const char *buffer,
  94                                                     size_t count,
  95                                                     loff_t *off)
  96 {
  97         struct obd_device *dev =
  98                         ((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                 return rc;
 105
 106         if (val < 0 || val > USHRT_MAX)
 107                 return -ERANGE;
 108
 109         rc = obd_set_max_mod_rpcs_in_flight(&dev->u.cli, val);
 110         if (rc != 0)
 111                 count = rc;
 112
 113         return count;
 114 }
 115 LPROC_SEQ_FOPS(mdc_max_mod_rpcs_in_flight);
 116
 117
 118 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 119 {
 120         struct obd_device *dev = seq->private;
 121
 122         return obd_mod_rpc_stats_seq_show(&dev->u.cli, seq);
 123 }
 124
 125
 126 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
 127                                        const char __user *buf,
 128                                        size_t len, loff_t *off)
 129 {
 130         struct seq_file *seq = file->private_data;
 131         struct obd_device *dev = seq->private;
 132         struct client_obd *cli = &dev->u.cli;
 133
 134         lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
 135
 136         return len;
 137 }
 138 LPROC_SEQ_FOPS(mdc_rpc_stats);
 139
 140
 141 LPROC_SEQ_FOPS_WO_TYPE(mdc, ping);
 142
 143 LPROC_SEQ_FOPS_RO_TYPE(mdc, uuid);
 144 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
 145 LPROC_SEQ_FOPS_RO_TYPE(mdc, blksize);
 146 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytestotal);
 147 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesfree);
 148 LPROC_SEQ_FOPS_RO_TYPE(mdc, kbytesavail);
 149 LPROC_SEQ_FOPS_RO_TYPE(mdc, filestotal);
 150 LPROC_SEQ_FOPS_RO_TYPE(mdc, filesfree);
 151 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 152 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
 153 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
 154 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
 155
 156 static int mdc_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *v)
 157 {
 158         return lprocfs_obd_max_pages_per_rpc_seq_show(m, m->private);
 159 }
 160 LPROC_SEQ_FOPS_RO(mdc_obd_max_pages_per_rpc);
 161
 162 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 163 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 164
 165 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 166         { .name =       "uuid",
 167           .fops =       &mdc_uuid_fops          },
 168         { .name =       "ping",
 169           .fops =       &mdc_ping_fops,
 170           .proc_mode =  0222                    },
 171         { .name =       "connect_flags",
 172           .fops =       &mdc_connect_flags_fops },
 173         { .name =       "blocksize",
 174           .fops =       &mdc_blksize_fops       },
 175         { .name =       "kbytestotal",
 176           .fops =       &mdc_kbytestotal_fops   },
 177         { .name =       "kbytesfree",
 178           .fops =       &mdc_kbytesfree_fops    },
 179         { .name =       "kbytesavail",
 180           .fops =       &mdc_kbytesavail_fops   },
 181         { .name =       "filestotal",
 182           .fops =       &mdc_filestotal_fops    },
 183         { .name =       "filesfree",
 184           .fops =       &mdc_filesfree_fops     },
 185         { .name =       "mds_server_uuid",
 186           .fops =       &mdc_server_uuid_fops   },
 187         { .name =       "mds_conn_uuid",
 188           .fops =       &mdc_conn_uuid_fops     },
 189         /*
 190          * FIXME: below proc entry is provided, but not in used, instead
 191          * sbi->sb_md_brw_size is used, the per obd variable should be used
 192          * when CMD is enabled, and dir pages are managed in MDC layer.
 193          * Remember to enable proc write function.
 194          */
 195         { .name =       "max_pages_per_rpc",
 196           .fops =       &mdc_obd_max_pages_per_rpc_fops },
 197         { .name =       "max_rpcs_in_flight",
 198           .fops =       &mdc_max_rpcs_in_flight_fops    },
 199         { .name =       "max_mod_rpcs_in_flight",
 200           .fops =       &mdc_max_mod_rpcs_in_flight_fops        },
 201         { .name =       "timeouts",
 202           .fops =       &mdc_timeouts_fops              },
 203         { .name =       "import",
 204           .fops =       &mdc_import_fops                },
 205         { .name =       "state",
 206           .fops =       &mdc_state_fops                 },
 207         { .name =       "pinger_recov",
 208           .fops =       &mdc_pinger_recov_fops          },
 209         { .name =       "rpc_stats",
 210           .fops =       &mdc_rpc_stats_fops             },
 211         { NULL }
 212 };
 213 #endif /* CONFIG_PROC_FS */