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, loff_t *off)
  92 {
  93         struct obd_device *dev;
  94         __s64 val;
  95         int rc;
  96
  97         dev = ((struct seq_file *)file->private_data)->private;
  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 static int mdc_max_mod_rpcs_in_flight_seq_show(struct seq_file *m, void *v)
 114 {
 115         struct obd_device *dev = m->private;
 116         __u16 max;
 117
 118         max = obd_get_max_mod_rpcs_in_flight(&dev->u.cli);
 119         seq_printf(m, "%hu\n", max);
 120
 121         return 0;
 122 }
 123
 124 static ssize_t mdc_max_mod_rpcs_in_flight_seq_write(struct file *file,
 125                                                     const char __user *buffer,
 126                                                     size_t count, loff_t *off)
 127 {
 128         struct obd_device *dev =
 129                         ((struct seq_file *)file->private_data)->private;
 130         __s64 val;
 131         int rc;
 132
 133         rc = lprocfs_str_to_s64(buffer, count, &val);
 134         if (rc)
 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)
 142                 count = rc;
 143
 144         return count;
 145 }
 146 LPROC_SEQ_FOPS(mdc_max_mod_rpcs_in_flight);
 147
 148 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 149 {
 150         struct obd_device *dev = seq->private;
 151
 152         return obd_mod_rpc_stats_seq_show(&dev->u.cli, seq);
 153 }
 154
 155 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
 156                                        const char __user *buf,
 157                                        size_t len, loff_t *off)
 158 {
 159         struct seq_file *seq = file->private_data;
 160         struct obd_device *dev = seq->private;
 161         struct client_obd *cli = &dev->u.cli;
 162
 163         lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
 164
 165         return len;
 166 }
 167 LPROC_SEQ_FOPS(mdc_rpc_stats);
 168
 169 LPROC_SEQ_FOPS_WO_TYPE(mdc, ping);
 170
 171 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
 172 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
 173 LPROC_SEQ_FOPS_RO_TYPE(mdc, conn_uuid);
 174 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
 175 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
 176 LPROC_SEQ_FOPS_RW_TYPE(mdc, obd_max_pages_per_rpc);
 177 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
 178 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
 179
 180 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
 181         { .name =       "ping",
 182           .fops =       &mdc_ping_fops,
 183           .proc_mode =  0222                    },
 184         { .name =       "connect_flags",
 185           .fops =       &mdc_connect_flags_fops },
 186         { .name =       "mds_server_uuid",
 187           .fops =       &mdc_server_uuid_fops   },
 188         { .name =       "mds_conn_uuid",
 189           .fops =       &mdc_conn_uuid_fops     },
 190         { .name =       "max_pages_per_rpc",
 191           .fops =       &mdc_obd_max_pages_per_rpc_fops },
 192         { .name =       "max_rpcs_in_flight",
 193           .fops =       &mdc_max_rpcs_in_flight_fops    },
 194         { .name =       "max_mod_rpcs_in_flight",
 195           .fops =       &mdc_max_mod_rpcs_in_flight_fops        },
 196         { .name =       "timeouts",
 197           .fops =       &mdc_timeouts_fops              },
 198         { .name =       "import",
 199           .fops =       &mdc_import_fops                },
 200         { .name =       "state",
 201           .fops =       &mdc_state_fops                 },
 202         { .name =       "pinger_recov",
 203           .fops =       &mdc_pinger_recov_fops          },
 204         { .name =       "rpc_stats",
 205           .fops =       &mdc_rpc_stats_fops             },
 206         { .name =       "active",
 207           .fops =       &mdc_active_fops                },
 208         { NULL }
 209 };
 210 #endif /* CONFIG_PROC_FS */