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_dir2.h"
  27 #include "xfs_alloc.h"
  28 #include "xfs_dmapi.h"
  29 #include "xfs_quota.h"
  30 #include "xfs_mount.h"
  31 #include "xfs_bmap_btree.h"
  32 #include "xfs_alloc_btree.h"
  33 #include "xfs_ialloc_btree.h"
  34 #include "xfs_dir2_sf.h"
  35 #include "xfs_attr_sf.h"
  36 #include "xfs_dinode.h"
  37 #include "xfs_inode.h"
  38 #include "xfs_ialloc.h"
  39 #include "xfs_itable.h"
  40 #include "xfs_bmap.h"
  41 #include "xfs_btree.h"
  42 #include "xfs_rtalloc.h"
  43 #include "xfs_error.h"
  44 #include "xfs_rw.h"
  45 #include "xfs_attr.h"
  46 #include "xfs_buf_item.h"
  47 #include "xfs_qm.h"
  48
  49 struct xqmstats xqmstats;
  50
  51 static int xqm_proc_show(struct seq_file *m, void *v)
  52 {
  53         /* maximum; incore; ratio free to inuse; freelist */
  54         seq_printf(m, "%d\t%d\t%d\t%u\n",
  55                         ndquot,
  56                         xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0,
  57                         xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0,
  58                         xfs_Gqm? xfs_Gqm->qm_dqfreelist.qh_nelems : 0);
  59         return 0;
  60 }
  61
  62 static int xqm_proc_open(struct inode *inode, struct file *file)
  63 {
  64         return single_open(file, xqm_proc_show, NULL);
  65 }
  66
  67 static const struct file_operations xqm_proc_fops = {
  68         .owner          = THIS_MODULE,
  69         .open           = xqm_proc_open,
  70         .read           = seq_read,
  71         .llseek         = seq_lseek,
  72         .release        = single_release,
  73 };
  74
  75 static int xqmstat_proc_show(struct seq_file *m, void *v)
  76 {
  77         /* quota performance statistics */
  78         seq_printf(m, "qm %u %u %u %u %u %u %u %u\n",
  79                         xqmstats.xs_qm_dqreclaims,
  80                         xqmstats.xs_qm_dqreclaim_misses,
  81                         xqmstats.xs_qm_dquot_dups,
  82                         xqmstats.xs_qm_dqcachemisses,
  83                         xqmstats.xs_qm_dqcachehits,
  84                         xqmstats.xs_qm_dqwants,
  85                         xqmstats.xs_qm_dqshake_reclaims,
  86                         xqmstats.xs_qm_dqinact_reclaims);
  87         return 0;
  88 }
  89
  90 static int xqmstat_proc_open(struct inode *inode, struct file *file)
  91 {
  92         return single_open(file, xqmstat_proc_show, NULL);
  93 }
  94
  95 static const struct file_operations xqmstat_proc_fops = {
  96         .owner          = THIS_MODULE,
  97         .open           = xqmstat_proc_open,
  98         .read           = seq_read,
  99         .llseek         = seq_lseek,
 100         .release        = single_release,
 101 };
 102
 103 void
 104 xfs_qm_init_procfs(void)
 105 {
 106         proc_create("fs/xfs/xqmstat", 0, NULL, &xqmstat_proc_fops);
 107         proc_create("fs/xfs/xqm", 0, NULL, &xqm_proc_fops);
 108 }
 109
 110 void
 111 xfs_qm_cleanup_procfs(void)
 112 {
 113         remove_proc_entry("fs/xfs/xqm", NULL);
 114         remove_proc_entry("fs/xfs/xqmstat", NULL);
 115 }