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 xfs_stat_proc_show(struct seq_file *m, void *v) 24 { 25 int c, i, j, val; 26 __uint64_t xs_xstrat_bytes = 0; 27 __uint64_t xs_write_bytes = 0; 28 __uint64_t xs_read_bytes = 0; 29 30 static const struct xstats_entry { 31 char *desc; 32 int endpoint; 33 } xstats[] = { 34 { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, 35 { "abt", XFSSTAT_END_ALLOC_BTREE }, 36 { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, 37 { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, 38 { "dir", XFSSTAT_END_DIRECTORY_OPS }, 39 { "trans", XFSSTAT_END_TRANSACTIONS }, 40 { "ig", XFSSTAT_END_INODE_OPS }, 41 { "log", XFSSTAT_END_LOG_OPS }, 42 { "push_ail", XFSSTAT_END_TAIL_PUSHING }, 43 { "xstrat", XFSSTAT_END_WRITE_CONVERT }, 44 { "rw", XFSSTAT_END_READ_WRITE_OPS }, 45 { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, 46 { "icluster", XFSSTAT_END_INODE_CLUSTER }, 47 { "vnodes", XFSSTAT_END_VNODE_OPS }, 48 { "buf", XFSSTAT_END_BUF }, 49 { "abtb2", XFSSTAT_END_ABTB_V2 }, 50 { "abtc2", XFSSTAT_END_ABTC_V2 }, 51 { "bmbt2", XFSSTAT_END_BMBT_V2 }, 52 { "ibt2", XFSSTAT_END_IBT_V2 }, 53 }; 54 55 /* Loop over all stats groups */ 56 for (i=j = 0; i < ARRAY_SIZE(xstats); i++) { 57 seq_printf(m, "%s", xstats[i].desc); 58 /* inner loop does each group */ 59 while (j < xstats[i].endpoint) { 60 val = 0; 61 /* sum over all cpus */ 62 for_each_possible_cpu(c) 63 val += *(((__u32*)&per_cpu(xfsstats, c) + j)); 64 seq_printf(m, " %u", val); 65 j++; 66 } 67 seq_putc(m, '\n'); 68 } 69 /* extra precision counters */ 70 for_each_possible_cpu(i) { 71 xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; 72 xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; 73 xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; 74 } 75 76 seq_printf(m, "xpc %Lu %Lu %Lu\n", 77 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); 78 seq_printf(m, "debug %u\n", 79 #if defined(DEBUG) 80 1); 81 #else 82 0); 83 #endif 84 return 0; 85 } 86 87 static int xfs_stat_proc_open(struct inode *inode, struct file *file) 88 { 89 return single_open(file, xfs_stat_proc_show, NULL); 90 } 91 92 static const struct file_operations xfs_stat_proc_fops = { 93 .owner = THIS_MODULE, 94 .open = xfs_stat_proc_open, 95 .read = seq_read, 96 .llseek = seq_lseek, 97 .release = single_release, 98 }; 99 100 int 101 xfs_init_procfs(void) 102 { 103 if (!proc_mkdir("fs/xfs", NULL)) 104 goto out; 105 106 if (!proc_create("fs/xfs/stat", 0, NULL, 107 &xfs_stat_proc_fops)) 108 goto out_remove_entry; 109 return 0; 110 111 out_remove_entry: 112 remove_proc_entry("fs/xfs", NULL); 113 out: 114 return -ENOMEM; 115 } 116 117 void 118 xfs_cleanup_procfs(void) 119 { 120 remove_proc_entry("fs/xfs/stat", NULL); 121 remove_proc_entry("fs/xfs", NULL); 122 } 123