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_groups(char *page, char **start, off_t off,
38 int count, int *eof, void *data)
41 return snprintf(page, count, "%u\n", FILTER_GROUPS);
44 static int lprocfs_filter_rd_tot_dirty(char *page, char **start, off_t off,
45 int count, int *eof, void *data)
47 struct obd_device *obd = (struct obd_device *)data;
51 return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_dirty);
54 static int lprocfs_filter_rd_tot_granted(char *page, char **start, off_t off,
55 int count, int *eof, void *data)
57 struct obd_device *obd = (struct obd_device *)data;
61 return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_granted);
64 static int lprocfs_filter_rd_tot_pending(char *page, char **start, off_t off,
65 int count, int *eof, void *data)
67 struct obd_device *obd = (struct obd_device *)data;
71 return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_pending);
74 static int lprocfs_filter_rd_mntdev(char *page, char **start, off_t off,
75 int count, int *eof, void *data)
77 struct obd_device *obd = (struct obd_device *)data;
80 LASSERT(obd->u.filter.fo_vfsmnt->mnt_devname);
82 return snprintf(page, count, "%s\n",
83 obd->u.filter.fo_vfsmnt->mnt_devname);
86 static int lprocfs_filter_rd_last_id(char *page, char **start, off_t off,
87 int count, int *eof, void *data)
89 struct obd_device *obd = data;
94 return snprintf(page, count, LPU64"\n",
95 filter_last_id(&obd->u.filter, 0));
98 int lprocfs_filter_rd_readcache(char *page, char **start, off_t off, int count,
101 struct obd_device *obd = data;
104 rc = snprintf(page, count, LPU64"\n",
105 obd->u.filter.fo_readcache_max_filesize);
109 int lprocfs_filter_wr_readcache(struct file *file, const char *buffer,
110 unsigned long count, void *data)
112 struct obd_device *obd = data;
116 rc = lprocfs_write_u64_helper(buffer, count, &val);
120 obd->u.filter.fo_readcache_max_filesize = val;
124 static struct lprocfs_vars lprocfs_obd_vars[] = {
125 { "uuid", lprocfs_rd_uuid, 0, 0 },
126 { "blocksize", lprocfs_rd_blksize, 0, 0 },
127 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
128 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
129 { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
130 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
131 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
132 { "filegroups", lprocfs_filter_rd_groups, 0, 0 },
133 { "fstype", lprocfs_rd_fstype, 0, 0 },
134 { "mntdev", lprocfs_filter_rd_mntdev, 0, 0 },
135 { "last_id", lprocfs_filter_rd_last_id,0, 0 },
136 { "tot_dirty", lprocfs_filter_rd_tot_dirty, 0, 0 },
137 { "tot_pending", lprocfs_filter_rd_tot_pending, 0, 0 },
138 { "tot_granted", lprocfs_filter_rd_tot_granted, 0, 0 },
139 { "num_exports", lprocfs_rd_num_exports, 0, 0 },
140 { "readcache_max_filesize",
141 lprocfs_filter_rd_readcache,
142 lprocfs_filter_wr_readcache, 0 },
146 static struct lprocfs_vars lprocfs_module_vars[] = {
147 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
151 void filter_tally_write(struct filter_obd *filter, struct page **pages,
152 int nr_pages, unsigned long *blocks, int blocks_per_page)
154 struct page *last_page = NULL;
155 unsigned long *last_block = NULL;
156 unsigned long discont_pages = 0;
157 unsigned long discont_blocks = 0;
163 lprocfs_oh_tally_log2(&filter->fo_w_pages, nr_pages);
165 while (nr_pages-- > 0) {
166 if (last_page && (*pages)->index != (last_page->index + 1))
170 for (i = 0; i < blocks_per_page; i++) {
171 if (last_block && *blocks != (*last_block + 1))
173 last_block = blocks++;
177 lprocfs_oh_tally(&filter->fo_w_discont_pages, discont_pages);
178 lprocfs_oh_tally(&filter->fo_w_discont_blocks, discont_blocks);
181 void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb,
184 struct niobuf_local *end;
185 struct page *last_page = NULL;
186 unsigned long discont_pages = 0;
187 unsigned long discont_blocks = 0;
192 for (end = lnb + niocount; lnb < end && lnb->page; lnb++) {
193 struct page *page = lnb->page;
195 if (page->index != (last_page->index + 1))
197 /* XXX not so smart for now */
198 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
199 if ((page->buffers && last_page->buffers) &&
200 (page->buffers->b_blocknr !=
201 (last_page->buffers->b_blocknr + 1)))
204 #warning "port on 2.6 -bzzz"
210 lprocfs_oh_tally_log2(&filter->fo_r_pages, niocount);
211 lprocfs_oh_tally(&filter->fo_r_discont_pages, discont_pages);
212 lprocfs_oh_tally(&filter->fo_r_discont_blocks, discont_blocks);
215 #define pct(a,b) (b ? a * 100 / b : 0)
217 static int filter_brw_stats_seq_show(struct seq_file *seq, void *v)
220 struct obd_device *dev = seq->private;
221 struct filter_obd *filter = &dev->u.filter;
222 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
225 do_gettimeofday(&now);
227 /* this sampling races with updates */
229 seq_printf(seq, "snapshot_time: %lu:%lu (secs:usecs)\n",
230 now.tv_sec, now.tv_usec);
232 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
233 seq_printf(seq, "pages per brw brws %% cum %% |");
234 seq_printf(seq, " rpcs %% cum %%\n");
236 read_tot = lprocfs_oh_sum(&filter->fo_r_pages);
237 write_tot = lprocfs_oh_sum(&filter->fo_w_pages);
241 for (i = 0; i < OBD_HIST_MAX; i++) {
242 unsigned long r = filter->fo_r_pages.oh_buckets[i];
243 unsigned long w = filter->fo_w_pages.oh_buckets[i];
246 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
247 1 << i, r, pct(r, read_tot),
248 pct(read_cum, read_tot), w,
250 pct(write_cum, write_tot));
251 if (read_cum == read_tot && write_cum == write_tot)
255 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
256 seq_printf(seq, "discont pages rpcs %% cum %% |");
257 seq_printf(seq, " rpcs %% cum %%\n");
259 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_pages);
260 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_pages);
265 for (i = 0; i < OBD_HIST_MAX; i++) {
266 unsigned long r = filter->fo_r_discont_pages.oh_buckets[i];
267 unsigned long w = filter->fo_w_discont_pages.oh_buckets[i];
270 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
271 i, r, pct(r, read_tot),
272 pct(read_cum, read_tot), w,
274 pct(write_cum, write_tot));
275 if (read_cum == read_tot && write_cum == write_tot)
279 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
280 seq_printf(seq, "discont blocks rpcs %% cum %% |");
281 seq_printf(seq, " rpcs %% cum %%\n");
283 read_tot = lprocfs_oh_sum(&filter->fo_r_discont_blocks);
284 write_tot = lprocfs_oh_sum(&filter->fo_w_discont_blocks);
288 for (i = 0; i < OBD_HIST_MAX; i++) {
289 unsigned long r = filter->fo_r_discont_blocks.oh_buckets[i];
290 unsigned long w = filter->fo_w_discont_blocks.oh_buckets[i];
293 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
294 i, r, pct(r, read_tot),
295 pct(read_cum, read_tot), w,
297 pct(write_cum, write_tot));
298 if (read_cum == read_tot && write_cum == write_tot)
306 static void *filter_brw_stats_seq_start(struct seq_file *p, loff_t *pos)
312 static void *filter_brw_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
317 static void filter_brw_stats_seq_stop(struct seq_file *p, void *v)
320 struct seq_operations filter_brw_stats_seq_sops = {
321 .start = filter_brw_stats_seq_start,
322 .stop = filter_brw_stats_seq_stop,
323 .next = filter_brw_stats_seq_next,
324 .show = filter_brw_stats_seq_show,
327 static int filter_brw_stats_seq_open(struct inode *inode, struct file *file)
329 struct proc_dir_entry *dp = PDE(inode);
330 struct seq_file *seq;
333 rc = seq_open(file, &filter_brw_stats_seq_sops);
336 seq = file->private_data;
337 seq->private = dp->data;
341 static ssize_t filter_brw_stats_seq_write(struct file *file, const char *buf,
342 size_t len, loff_t *off)
344 struct seq_file *seq = file->private_data;
345 struct obd_device *dev = seq->private;
346 struct filter_obd *filter = &dev->u.filter;
348 lprocfs_oh_clear(&filter->fo_r_pages);
349 lprocfs_oh_clear(&filter->fo_w_pages);
350 lprocfs_oh_clear(&filter->fo_r_discont_pages);
351 lprocfs_oh_clear(&filter->fo_w_discont_pages);
352 lprocfs_oh_clear(&filter->fo_r_discont_blocks);
353 lprocfs_oh_clear(&filter->fo_w_discont_blocks);
358 struct file_operations filter_brw_stats_fops = {
359 .owner = THIS_MODULE,
360 .open = filter_brw_stats_seq_open,
362 .write = filter_brw_stats_seq_write,
364 .release = seq_release,
367 int lproc_filter_attach_seqstat(struct obd_device *dev)
369 return lprocfs_obd_seq_create(dev, "brw_stats", 0444,
370 &filter_brw_stats_fops, dev);
376 LPROCFS_INIT_VARS(filter, lprocfs_module_vars, lprocfs_obd_vars)