1 /* 2 * Copyright (c) 2000-2003,2005 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 <linux/proc_fs.h> 20 21 DEFINE_PER_CPU(struct xfsstats, xfsstats); 22 23 static int counter_val(int idx) 24 { 25 int val = 0, cpu; 26 27 for_each_possible_cpu(cpu) 28 val += *(((__u32 *)&per_cpu(xfsstats, cpu) + idx)); 29 return val; 30 } 31 32 static int xfs_stat_proc_show(struct seq_file *m, void *v) 33 { 34 int i, j; 35 __uint64_t xs_xstrat_bytes = 0; 36 __uint64_t xs_write_bytes = 0; 37 __uint64_t xs_read_bytes = 0; 38 39 static const struct xstats_entry { 40 char *desc; 41 int endpoint; 42 } xstats[] = { 43 { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, 44 { "abt", XFSSTAT_END_ALLOC_BTREE }, 45 { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, 46 { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, 47 { "dir", XFSSTAT_END_DIRECTORY_OPS }, 48 { "trans", XFSSTAT_END_TRANSACTIONS }, 49 { "ig", XFSSTAT_END_INODE_OPS }, 50 { "log", XFSSTAT_END_LOG_OPS }, 51 { "push_ail", XFSSTAT_END_TAIL_PUSHING }, 52 { "xstrat", XFSSTAT_END_WRITE_CONVERT }, 53 { "rw", XFSSTAT_END_READ_WRITE_OPS }, 54 { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, 55 { "icluster", XFSSTAT_END_INODE_CLUSTER }, 56 { "vnodes", XFSSTAT_END_VNODE_OPS }, 57 { "buf", XFSSTAT_END_BUF }, 58 { "abtb2", XFSSTAT_END_ABTB_V2 }, 59 { "abtc2", XFSSTAT_END_ABTC_V2 }, 60 { "bmbt2", XFSSTAT_END_BMBT_V2 }, 61 { "ibt2", XFSSTAT_END_IBT_V2 }, 62 /* we print both series of quota information together */ 63 { "qm", XFSSTAT_END_QM }, 64 }; 65 66 /* Loop over all stats groups */ 67 for (i = j = 0; i < ARRAY_SIZE(xstats); i++) { 68 seq_printf(m, "%s", xstats[i].desc); 69 /* inner loop does each group */ 70 for (; j < xstats[i].endpoint; j++) 71 seq_printf(m, " %u", counter_val(j)); 72 seq_putc(m, '\n'); 73 } 74 /* extra precision counters */ 75 for_each_possible_cpu(i) { 76 xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; 77 xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; 78 xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; 79 } 80 81 seq_printf(m, "xpc %Lu %Lu %Lu\n", 82 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); 83 seq_printf(m, "debug %u\n", 84 #if defined(DEBUG) 85 1); 86 #else 87 0); 88 #endif 89 return 0; 90 } 91 92 static int xfs_stat_proc_open(struct inode *inode, struct file *file) 93 { 94 return single_open(file, xfs_stat_proc_show, NULL); 95 } 96 97 static const struct file_operations xfs_stat_proc_fops = { 98 .owner = THIS_MODULE, 99 .open = xfs_stat_proc_open, 100 .read = seq_read, 101 .llseek = seq_lseek, 102 .release = single_release, 103 }; 104 105 /* legacy quota interfaces */ 106 #ifdef CONFIG_XFS_QUOTA 107 static int xqm_proc_show(struct seq_file *m, void *v) 108 { 109 /* maximum; incore; ratio free to inuse; freelist */ 110 seq_printf(m, "%d\t%d\t%d\t%u\n", 111 0, 112 counter_val(XFSSTAT_END_XQMSTAT), 113 0, 114 counter_val(XFSSTAT_END_XQMSTAT + 1)); 115 return 0; 116 } 117 118 static int xqm_proc_open(struct inode *inode, struct file *file) 119 { 120 return single_open(file, xqm_proc_show, NULL); 121 } 122 123 static const struct file_operations xqm_proc_fops = { 124 .owner = THIS_MODULE, 125 .open = xqm_proc_open, 126 .read = seq_read, 127 .llseek = seq_lseek, 128 .release = single_release, 129 }; 130 131 /* legacy quota stats interface no 2 */ 132 static int xqmstat_proc_show(struct seq_file *m, void *v) 133 { 134 int j; 135 136 seq_printf(m, "qm"); 137 for (j = XFSSTAT_END_IBT_V2; j < XFSSTAT_END_XQMSTAT; j++) 138 seq_printf(m, " %u", counter_val(j)); 139 seq_putc(m, '\n'); 140 return 0; 141 } 142 143 static int xqmstat_proc_open(struct inode *inode, struct file *file) 144 { 145 return single_open(file, xqmstat_proc_show, NULL); 146 } 147 148 static const struct file_operations xqmstat_proc_fops = { 149 .owner = THIS_MODULE, 150 .open = xqmstat_proc_open, 151 .read = seq_read, 152 .llseek = seq_lseek, 153 .release = single_release, 154 }; 155 #endif /* CONFIG_XFS_QUOTA */ 156 157 int 158 xfs_init_procfs(void) 159 { 160 if (!proc_mkdir("fs/xfs", NULL)) 161 goto out; 162 163 if (!proc_create("fs/xfs/stat", 0, NULL, 164 &xfs_stat_proc_fops)) 165 goto out_remove_xfs_dir; 166 #ifdef CONFIG_XFS_QUOTA 167 if (!proc_create("fs/xfs/xqmstat", 0, NULL, 168 &xqmstat_proc_fops)) 169 goto out_remove_stat_file; 170 if (!proc_create("fs/xfs/xqm", 0, NULL, 171 &xqm_proc_fops)) 172 goto out_remove_xqmstat_file; 173 #endif 174 return 0; 175 176 #ifdef CONFIG_XFS_QUOTA 177 out_remove_xqmstat_file: 178 remove_proc_entry("fs/xfs/xqmstat", NULL); 179 out_remove_stat_file: 180 remove_proc_entry("fs/xfs/stat", NULL); 181 #endif 182 out_remove_xfs_dir: 183 remove_proc_entry("fs/xfs", NULL); 184 out: 185 return -ENOMEM; 186 } 187 188 void 189 xfs_cleanup_procfs(void) 190 { 191 #ifdef CONFIG_XFS_QUOTA 192 remove_proc_entry("fs/xfs/xqm", NULL); 193 remove_proc_entry("fs/xfs/xqmstat", NULL); 194 #endif 195 remove_proc_entry("fs/xfs/stat", NULL); 196 remove_proc_entry("fs/xfs", NULL); 197 } 198