fs/xfs/quota/xfs_qm_stats.c

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #include "xfs.h"
  19 #include "xfs_fs.h"
  20 #include "xfs_bit.h"
  21 #include "xfs_log.h"
  22 #include "xfs_inum.h"
  23 #include "xfs_trans.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_ag.h"
  26 #include "xfs_alloc.h"
  27 #include "xfs_quota.h"
  28 #include "xfs_mount.h"
  29 #include "xfs_bmap_btree.h"
  30 #include "xfs_inode.h"
  31 #include "xfs_itable.h"
  32 #include "xfs_bmap.h"
  33 #include "xfs_rtalloc.h"
  34 #include "xfs_error.h"
  35 #include "xfs_attr.h"
  36 #include "xfs_buf_item.h"
  37 #include "xfs_qm.h"
  38
  39 struct xqmstats xqmstats;
  40
  41 static int xqm_proc_show(struct seq_file *m, void *v)
  42 {
  43         /* maximum; incore; ratio free to inuse; freelist */
  44         seq_printf(m, "%d\t%d\t%d\t%u\n",
  45                         ndquot,
  46                         xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0,
  47                         xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0,
  48                         xfs_Gqm? xfs_Gqm->qm_dqfrlist_cnt : 0);
  49         return 0;
  50 }
  51
  52 static int xqm_proc_open(struct inode *inode, struct file *file)
  53 {
  54         return single_open(file, xqm_proc_show, NULL);
  55 }
  56
  57 static const struct file_operations xqm_proc_fops = {
  58         .owner          = THIS_MODULE,
  59         .open           = xqm_proc_open,
  60         .read           = seq_read,
  61         .llseek         = seq_lseek,
  62         .release        = single_release,
  63 };
  64
  65 static int xqmstat_proc_show(struct seq_file *m, void *v)
  66 {
  67         /* quota performance statistics */
  68         seq_printf(m, "qm %u %u %u %u %u %u %u %u\n",
  69                         xqmstats.xs_qm_dqreclaims,
  70                         xqmstats.xs_qm_dqreclaim_misses,
  71                         xqmstats.xs_qm_dquot_dups,
  72                         xqmstats.xs_qm_dqcachemisses,
  73                         xqmstats.xs_qm_dqcachehits,
  74                         xqmstats.xs_qm_dqwants,
  75                         xqmstats.xs_qm_dqshake_reclaims,
  76                         xqmstats.xs_qm_dqinact_reclaims);
  77         return 0;
  78 }
  79
  80 static int xqmstat_proc_open(struct inode *inode, struct file *file)
  81 {
  82         return single_open(file, xqmstat_proc_show, NULL);
  83 }
  84
  85 static const struct file_operations xqmstat_proc_fops = {
  86         .owner          = THIS_MODULE,
  87         .open           = xqmstat_proc_open,
  88         .read           = seq_read,
  89         .llseek         = seq_lseek,
  90         .release        = single_release,
  91 };
  92
  93 void
  94 xfs_qm_init_procfs(void)
  95 {
  96         proc_create("fs/xfs/xqmstat", 0, NULL, &xqmstat_proc_fops);
  97         proc_create("fs/xfs/xqm", 0, NULL, &xqm_proc_fops);
  98 }
  99
 100 void
 101 xfs_qm_cleanup_procfs(void)
 102 {
 103         remove_proc_entry("fs/xfs/xqm", NULL);
 104         remove_proc_entry("fs/xfs/xqmstat", NULL);
 105 }