1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #define DEBUG_SUBSYSTEM S_CLASS
24 #include <linux/version.h>
25 #include <linux/lprocfs_status.h>
26 #include <linux/obd.h>
27 #include <linux/seq_file.h>
28 #include <linux/version.h>
30 #include "filter_internal.h"
33 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
34 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
37 static int lprocfs_filter_rd_mntdev(char *page, char **start, off_t off,
38 int count, int *eof, void *data)
40 struct obd_device* obd = (struct obd_device *)data;
43 LASSERT(obd->u.filter.fo_vfsmnt->mnt_devname);
45 return snprintf(page, count, "%s\n",
46 obd->u.filter.fo_vfsmnt->mnt_devname);
49 static int lprocfs_filter_rd_last_id(char *page, char **start, off_t off,
50 int count, int *eof, void *data)
52 struct obd_device *obd = data;
57 return snprintf(page, count, LPU64"\n",
58 filter_last_id(&obd->u.filter, 0));
61 static struct lprocfs_vars lprocfs_obd_vars[] = {
62 { "uuid", lprocfs_rd_uuid, 0, 0 },
63 { "blocksize", lprocfs_rd_blksize, 0, 0 },
64 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
65 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
66 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
67 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
68 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
69 { "fstype", lprocfs_rd_fstype, 0, 0 },
70 { "mntdev", lprocfs_filter_rd_mntdev, 0, 0 },
71 { "last_id", lprocfs_filter_rd_last_id, 0, 0 },
75 static struct lprocfs_vars lprocfs_module_vars[] = {
76 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
80 void filter_tally_write(struct filter_obd *filter, struct page **pages,
81 int nr_pages, unsigned long *blocks, int blocks_per_page)
83 struct page *last_page = NULL;
84 unsigned long *last_block = NULL;
85 unsigned long discont_pages = 0;
86 unsigned long discont_blocks = 0;
92 lprocfs_oh_tally_log2(&filter->fo_w_pages, nr_pages);
94 while (nr_pages-- > 0) {
95 if (last_page && (*pages)->index != (last_page->index + 1))
99 for (i = 0; i < blocks_per_page; i++) {
100 if (last_block && *blocks != (*last_block + 1))
102 last_block = blocks++;
106 lprocfs_oh_tally(&filter->fo_w_discont_pages, discont_pages);
107 lprocfs_oh_tally(&filter->fo_w_discont_blocks, discont_blocks);
110 void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb,
113 struct niobuf_local *end;
114 struct page *last_page = NULL;
115 unsigned long discont_pages = 0;
116 unsigned long discont_blocks = 0;
121 for (end = lnb + niocount; lnb < end && lnb->page; lnb++) {
122 struct page *page = lnb->page;
124 if (page->index != (last_page->index + 1))
126 /* XXX not so smart for now */
127 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
128 if ((page->buffers && last_page->buffers) &&
129 (page->buffers->b_blocknr !=
130 (last_page->buffers->b_blocknr + 1)))
133 #warning "port on 2.6 -bzzz"
139 lprocfs_oh_tally_log2(&filter->fo_r_pages, niocount);
140 lprocfs_oh_tally(&filter->fo_r_discont_pages, discont_pages);
141 lprocfs_oh_tally(&filter->fo_r_discont_blocks, discont_blocks);
144 #define pct(a,b) (b ? a * 100 / b : 0)
146 static int filter_brw_stats_seq_show(struct seq_file *seq, void *v)
149 struct obd_device *dev = seq->private;
150 struct filter_obd *filter = &dev->u.filter;
151 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
154 do_gettimeofday(&now);
156 /* this sampling races with updates */
158 seq_printf(seq, "snapshot_time: %lu:%lu (secs:usecs)\n",
159 now.tv_sec, now.tv_usec);
161 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
162 seq_printf(seq, "pages per brw brws %% cum %% |");
163 seq_printf(seq, " rpcs %% cum %%\n");
165 read_tot = lprocfs_oh_sum(&filter->fo_r_pages);
166 write_tot = lprocfs_oh_sum(&filter->fo_w_pages);
170 for (i = 0; i < OBD_HIST_MAX; i++) {
171 unsigned long r = filter->fo_r_pages.oh_buckets[i];
172 unsigned long w = filter->fo_w_pages.oh_buckets[i];
175 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
176 1 << i, r, pct(r, read_tot),
177 pct(read_cum, read_tot), w,
179 pct(write_cum, write_tot));
180 if (read_cum == read_tot && write_cum == write_tot)
184 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
185 seq_printf(seq, "discont pages rpcs %% cum %% |");
186 seq_printf(seq, " rpcs %% cum %%\n");
188 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_pages);
189 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_pages);
194 for (i = 0; i < OBD_HIST_MAX; i++) {
195 unsigned long r = filter->fo_r_discont_pages.oh_buckets[i];
196 unsigned long w = filter->fo_w_discont_pages.oh_buckets[i];
199 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
200 i, r, pct(r, read_tot),
201 pct(read_cum, read_tot), w,
203 pct(write_cum, write_tot));
204 if (read_cum == read_tot && write_cum == write_tot)
208 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
209 seq_printf(seq, "discont blocks rpcs %% cum %% |");
210 seq_printf(seq, " rpcs %% cum %%\n");
212 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_blocks);
213 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_blocks);
217 for (i = 0; i < OBD_HIST_MAX; i++) {
218 unsigned long r = filter->fo_r_discont_blocks.oh_buckets[i];
219 unsigned long w = filter->fo_w_discont_blocks.oh_buckets[i];
222 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
223 i, r, pct(r, read_tot),
224 pct(read_cum, read_tot), w,
226 pct(write_cum, write_tot));
227 if (read_cum == read_tot && write_cum == write_tot)
235 static void *filter_brw_stats_seq_start(struct seq_file *p, loff_t *pos)
241 static void *filter_brw_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
246 static void filter_brw_stats_seq_stop(struct seq_file *p, void *v)
249 struct seq_operations filter_brw_stats_seq_sops = {
250 .start = filter_brw_stats_seq_start,
251 .stop = filter_brw_stats_seq_stop,
252 .next = filter_brw_stats_seq_next,
253 .show = filter_brw_stats_seq_show,
256 static int filter_brw_stats_seq_open(struct inode *inode, struct file *file)
258 struct proc_dir_entry *dp = PDE(inode);
259 struct seq_file *seq;
262 rc = seq_open(file, &filter_brw_stats_seq_sops);
265 seq = file->private_data;
266 seq->private = dp->data;
270 static ssize_t filter_brw_stats_seq_write(struct file *file, const char *buf,
271 size_t len, loff_t *off)
273 struct seq_file *seq = file->private_data;
274 struct obd_device *dev = seq->private;
275 struct filter_obd *filter = &dev->u.filter;
277 lprocfs_oh_clear(&filter->fo_r_pages);
278 lprocfs_oh_clear(&filter->fo_w_pages);
279 lprocfs_oh_clear(&filter->fo_r_discont_pages);
280 lprocfs_oh_clear(&filter->fo_w_discont_pages);
281 lprocfs_oh_clear(&filter->fo_r_discont_blocks);
282 lprocfs_oh_clear(&filter->fo_w_discont_blocks);
287 struct file_operations filter_brw_stats_fops = {
288 .open = filter_brw_stats_seq_open,
290 .write = filter_brw_stats_seq_write,
292 .release = seq_release,
295 int lproc_filter_attach_seqstat(struct obd_device *dev)
297 return lprocfs_obd_seq_create(dev, "brw_stats", 0444,
298 &filter_brw_stats_fops, dev);
304 LPROCFS_INIT_VARS(filter,lprocfs_module_vars, lprocfs_obd_vars)