Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
| 19 | #include <linux/proc_fs.h> |
| 20 | |
| 21 | DEFINE_PER_CPU(struct xfsstats, xfsstats); |
| 22 | |
| 23 | STATIC int |
| 24 | xfs_read_xfsstats( |
| 25 | char *buffer, |
| 26 | char **start, |
| 27 | off_t offset, |
| 28 | int count, |
| 29 | int *eof, |
| 30 | void *data) |
| 31 | { |
| 32 | int c, i, j, len, val; |
| 33 | __uint64_t xs_xstrat_bytes = 0; |
| 34 | __uint64_t xs_write_bytes = 0; |
| 35 | __uint64_t xs_read_bytes = 0; |
| 36 | |
Christoph Hellwig | 1df84c9 | 2006-01-11 15:29:52 +1100 | [diff] [blame] | 37 | static const struct xstats_entry { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | char *desc; |
| 39 | int endpoint; |
| 40 | } xstats[] = { |
| 41 | { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC }, |
| 42 | { "abt", XFSSTAT_END_ALLOC_BTREE }, |
| 43 | { "blk_map", XFSSTAT_END_BLOCK_MAPPING }, |
| 44 | { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE }, |
| 45 | { "dir", XFSSTAT_END_DIRECTORY_OPS }, |
| 46 | { "trans", XFSSTAT_END_TRANSACTIONS }, |
| 47 | { "ig", XFSSTAT_END_INODE_OPS }, |
| 48 | { "log", XFSSTAT_END_LOG_OPS }, |
| 49 | { "push_ail", XFSSTAT_END_TAIL_PUSHING }, |
| 50 | { "xstrat", XFSSTAT_END_WRITE_CONVERT }, |
| 51 | { "rw", XFSSTAT_END_READ_WRITE_OPS }, |
| 52 | { "attr", XFSSTAT_END_ATTRIBUTE_OPS }, |
| 53 | { "icluster", XFSSTAT_END_INODE_CLUSTER }, |
| 54 | { "vnodes", XFSSTAT_END_VNODE_OPS }, |
| 55 | { "buf", XFSSTAT_END_BUF }, |
| 56 | }; |
| 57 | |
| 58 | /* Loop over all stats groups */ |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 59 | for (i=j=len = 0; i < ARRAY_SIZE(xstats); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | len += sprintf(buffer + len, xstats[i].desc); |
| 61 | /* inner loop does each group */ |
| 62 | while (j < xstats[i].endpoint) { |
| 63 | val = 0; |
| 64 | /* sum over all cpus */ |
KAMEZAWA Hiroyuki | 6f0419e | 2006-06-23 02:03:00 -0700 | [diff] [blame] | 65 | for_each_possible_cpu(c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | val += *(((__u32*)&per_cpu(xfsstats, c) + j)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | len += sprintf(buffer + len, " %u", val); |
| 68 | j++; |
| 69 | } |
| 70 | buffer[len++] = '\n'; |
| 71 | } |
| 72 | /* extra precision counters */ |
KAMEZAWA Hiroyuki | 6f0419e | 2006-06-23 02:03:00 -0700 | [diff] [blame] | 73 | for_each_possible_cpu(i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes; |
| 75 | xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes; |
| 76 | xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes; |
| 77 | } |
| 78 | |
| 79 | len += sprintf(buffer + len, "xpc %Lu %Lu %Lu\n", |
| 80 | xs_xstrat_bytes, xs_write_bytes, xs_read_bytes); |
| 81 | len += sprintf(buffer + len, "debug %u\n", |
| 82 | #if defined(DEBUG) |
| 83 | 1); |
| 84 | #else |
| 85 | 0); |
| 86 | #endif |
| 87 | |
| 88 | if (offset >= len) { |
| 89 | *start = buffer; |
| 90 | *eof = 1; |
| 91 | return 0; |
| 92 | } |
| 93 | *start = buffer + offset; |
| 94 | if ((len -= offset) > count) |
| 95 | return count; |
| 96 | *eof = 1; |
| 97 | |
| 98 | return len; |
| 99 | } |
| 100 | |
| 101 | void |
| 102 | xfs_init_procfs(void) |
| 103 | { |
| 104 | if (!proc_mkdir("fs/xfs", NULL)) |
| 105 | return; |
| 106 | create_proc_read_entry("fs/xfs/stat", 0, NULL, xfs_read_xfsstats, NULL); |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | xfs_cleanup_procfs(void) |
| 111 | { |
| 112 | remove_proc_entry("fs/xfs/stat", NULL); |
| 113 | remove_proc_entry("fs/xfs", NULL); |
| 114 | } |