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;
53 struct filter_obd *filter = &obd->u.filter;
54 int retval = 0, rc, i;
59 for (i = 1; i < filter->fo_group_count; i++) {
60 rc = snprintf(page, count, LPU64"\n",filter_last_id(filter, i));
72 int lprocfs_filter_rd_readcache(char *page, char **start, off_t off, int count,
75 struct obd_device *obd = data;
78 rc = snprintf(page, count, LPU64"\n",
79 obd->u.filter.fo_readcache_max_filesize);
83 int lprocfs_filter_wr_readcache(struct file *file, const char *buffer,
84 unsigned long count, void *data)
86 struct obd_device *obd = data;
90 rc = lprocfs_write_u64_helper(buffer, count, &val);
94 obd->u.filter.fo_readcache_max_filesize = val;
98 static struct lprocfs_vars lprocfs_obd_vars[] = {
99 { "uuid", lprocfs_rd_uuid, 0, 0 },
100 { "blocksize", lprocfs_rd_blksize, 0, 0 },
101 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
102 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
103 { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
104 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
105 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
106 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
107 { "fstype", lprocfs_rd_fstype, 0, 0 },
108 { "mntdev", lprocfs_filter_rd_mntdev, 0, 0 },
109 { "last_id", lprocfs_filter_rd_last_id,0, 0 },
110 { "readcache_max_filesize",
111 lprocfs_filter_rd_readcache,
112 lprocfs_filter_wr_readcache, 0 },
116 static struct lprocfs_vars lprocfs_module_vars[] = {
117 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
121 void filter_tally_write(struct filter_obd *filter, struct page **pages,
122 int nr_pages, unsigned long *blocks, int blocks_per_page)
124 struct page *last_page = NULL;
125 unsigned long *last_block = NULL;
126 unsigned long discont_pages = 0;
127 unsigned long discont_blocks = 0;
133 lprocfs_oh_tally_log2(&filter->fo_w_pages, nr_pages);
135 while (nr_pages-- > 0) {
136 if (last_page && (*pages)->index != (last_page->index + 1))
140 for (i = 0; i < blocks_per_page; i++) {
141 if (last_block && *blocks != (*last_block + 1))
143 last_block = blocks++;
147 lprocfs_oh_tally(&filter->fo_w_discont_pages, discont_pages);
148 lprocfs_oh_tally(&filter->fo_w_discont_blocks, discont_blocks);
151 void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb,
154 struct niobuf_local *end;
155 struct page *last_page = NULL;
156 unsigned long discont_pages = 0;
157 unsigned long discont_blocks = 0;
162 for (end = lnb + niocount; lnb < end && lnb->page; lnb++) {
163 struct page *page = lnb->page;
165 if (page->index != (last_page->index + 1))
167 /* XXX not so smart for now */
168 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
169 if ((page->buffers && last_page->buffers) &&
170 (page->buffers->b_blocknr !=
171 (last_page->buffers->b_blocknr + 1)))
174 #warning "port on 2.6 -bzzz"
180 lprocfs_oh_tally_log2(&filter->fo_r_pages, niocount);
181 lprocfs_oh_tally(&filter->fo_r_discont_pages, discont_pages);
182 lprocfs_oh_tally(&filter->fo_r_discont_blocks, discont_blocks);
185 #define pct(a,b) (b ? a * 100 / b : 0)
187 static int filter_brw_stats_seq_show(struct seq_file *seq, void *v)
190 struct obd_device *dev = seq->private;
191 struct filter_obd *filter = &dev->u.filter;
192 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
195 do_gettimeofday(&now);
197 /* this sampling races with updates */
199 seq_printf(seq, "snapshot_time: %lu:%lu (secs:usecs)\n",
200 now.tv_sec, now.tv_usec);
202 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
203 seq_printf(seq, "pages per brw brws %% cum %% |");
204 seq_printf(seq, " rpcs %% cum %%\n");
206 read_tot = lprocfs_oh_sum(&filter->fo_r_pages);
207 write_tot = lprocfs_oh_sum(&filter->fo_w_pages);
211 for (i = 0; i < OBD_HIST_MAX; i++) {
212 unsigned long r = filter->fo_r_pages.oh_buckets[i];
213 unsigned long w = filter->fo_w_pages.oh_buckets[i];
216 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
217 1 << i, r, pct(r, read_tot),
218 pct(read_cum, read_tot), w,
220 pct(write_cum, write_tot));
221 if (read_cum == read_tot && write_cum == write_tot)
225 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
226 seq_printf(seq, "discont pages rpcs %% cum %% |");
227 seq_printf(seq, " rpcs %% cum %%\n");
229 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_pages);
230 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_pages);
235 for (i = 0; i < OBD_HIST_MAX; i++) {
236 unsigned long r = filter->fo_r_discont_pages.oh_buckets[i];
237 unsigned long w = filter->fo_w_discont_pages.oh_buckets[i];
240 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
241 i, r, pct(r, read_tot),
242 pct(read_cum, read_tot), w,
244 pct(write_cum, write_tot));
245 if (read_cum == read_tot && write_cum == write_tot)
249 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
250 seq_printf(seq, "discont blocks rpcs %% cum %% |");
251 seq_printf(seq, " rpcs %% cum %%\n");
253 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_blocks);
254 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_blocks);
258 for (i = 0; i < OBD_HIST_MAX; i++) {
259 unsigned long r = filter->fo_r_discont_blocks.oh_buckets[i];
260 unsigned long w = filter->fo_w_discont_blocks.oh_buckets[i];
263 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
264 i, r, pct(r, read_tot),
265 pct(read_cum, read_tot), w,
267 pct(write_cum, write_tot));
268 if (read_cum == read_tot && write_cum == write_tot)
276 static void *filter_brw_stats_seq_start(struct seq_file *p, loff_t *pos)
282 static void *filter_brw_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
287 static void filter_brw_stats_seq_stop(struct seq_file *p, void *v)
290 struct seq_operations filter_brw_stats_seq_sops = {
291 .start = filter_brw_stats_seq_start,
292 .stop = filter_brw_stats_seq_stop,
293 .next = filter_brw_stats_seq_next,
294 .show = filter_brw_stats_seq_show,
297 static int filter_brw_stats_seq_open(struct inode *inode, struct file *file)
299 struct proc_dir_entry *dp = PDE(inode);
300 struct seq_file *seq;
303 rc = seq_open(file, &filter_brw_stats_seq_sops);
306 seq = file->private_data;
307 seq->private = dp->data;
311 static ssize_t filter_brw_stats_seq_write(struct file *file, const char *buf,
312 size_t len, loff_t *off)
314 struct seq_file *seq = file->private_data;
315 struct obd_device *dev = seq->private;
316 struct filter_obd *filter = &dev->u.filter;
318 lprocfs_oh_clear(&filter->fo_r_pages);
319 lprocfs_oh_clear(&filter->fo_w_pages);
320 lprocfs_oh_clear(&filter->fo_r_discont_pages);
321 lprocfs_oh_clear(&filter->fo_w_discont_pages);
322 lprocfs_oh_clear(&filter->fo_r_discont_blocks);
323 lprocfs_oh_clear(&filter->fo_w_discont_blocks);
328 struct file_operations filter_brw_stats_fops = {
329 .open = filter_brw_stats_seq_open,
331 .write = filter_brw_stats_seq_write,
333 .release = seq_release,
336 int lproc_filter_attach_seqstat(struct obd_device *dev)
338 return lprocfs_obd_seq_create(dev, "brw_stats", 0444,
339 &filter_brw_stats_fops, dev);
345 LPROCFS_INIT_VARS(filter,lprocfs_module_vars, lprocfs_obd_vars)