4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 #define DEBUG_SUBSYSTEM S_CLASS
34 #include <linux/vfs.h>
35 #include <obd_class.h>
36 #include <lprocfs_status.h>
37 #include <lustre_osc.h>
38 #include <cl_object.h>
39 #include "mdc_internal.h"
41 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
44 struct obd_device *dev = container_of(kobj, struct obd_device,
48 LPROCFS_CLIMP_CHECK(dev);
49 len = sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
50 LPROCFS_CLIMP_EXIT(dev);
54 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
55 const char *buffer, size_t count)
57 struct obd_device *dev = container_of(kobj, struct obd_device,
62 rc = kstrtobool(buffer, &val);
67 if (dev->u.cli.cl_import->imp_deactive == val)
68 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
70 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
75 LUSTRE_RW_ATTR(active);
77 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
78 struct attribute *attr,
81 struct obd_device *dev = container_of(kobj, struct obd_device,
86 max = obd_get_max_rpcs_in_flight(&dev->u.cli);
87 len = sprintf(buf, "%u\n", max);
92 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
93 struct attribute *attr,
97 struct obd_device *dev = container_of(kobj, struct obd_device,
102 rc = kstrtouint(buffer, 10, &val);
106 rc = obd_set_max_rpcs_in_flight(&dev->u.cli, val);
112 LUSTRE_RW_ATTR(max_rpcs_in_flight);
114 static ssize_t max_mod_rpcs_in_flight_show(struct kobject *kobj,
115 struct attribute *attr,
118 struct obd_device *dev = container_of(kobj, struct obd_device,
122 max = obd_get_max_mod_rpcs_in_flight(&dev->u.cli);
123 return sprintf(buf, "%hu\n", max);
126 static ssize_t max_mod_rpcs_in_flight_store(struct kobject *kobj,
127 struct attribute *attr,
131 struct obd_device *dev = container_of(kobj, struct obd_device,
136 rc = kstrtou16(buffer, 10, &val);
140 rc = obd_set_max_mod_rpcs_in_flight(&dev->u.cli, val);
146 LUSTRE_RW_ATTR(max_mod_rpcs_in_flight);
148 static int mdc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
150 struct obd_device *dev = m->private;
151 struct client_obd *cli = &dev->u.cli;
155 spin_lock(&cli->cl_loi_list_lock);
156 val = cli->cl_dirty_max_pages;
157 spin_unlock(&cli->cl_loi_list_lock);
159 mult = 1 << (20 - PAGE_SHIFT);
160 return lprocfs_seq_read_frac_helper(m, val, mult);
163 static ssize_t mdc_max_dirty_mb_seq_write(struct file *file,
164 const char __user *buffer,
165 size_t count, loff_t *off)
167 struct seq_file *sfl = file->private_data;
168 struct obd_device *dev = sfl->private;
169 struct client_obd *cli = &dev->u.cli;
173 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
177 pages_number >>= PAGE_SHIFT;
179 if (pages_number <= 0 ||
180 pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) ||
181 pages_number > totalram_pages / 4) /* 1/4 of RAM */
184 spin_lock(&cli->cl_loi_list_lock);
185 cli->cl_dirty_max_pages = pages_number;
186 osc_wake_cache_waiters(cli);
187 spin_unlock(&cli->cl_loi_list_lock);
191 LPROC_SEQ_FOPS(mdc_max_dirty_mb);
193 static ssize_t contention_seconds_show(struct kobject *kobj,
194 struct attribute *attr,
197 struct obd_device *obd = container_of(kobj, struct obd_device,
199 struct osc_device *od = obd2osc_dev(obd);
201 return sprintf(buf, "%lld\n", od->od_contention_time);
204 static ssize_t contention_seconds_store(struct kobject *kobj,
205 struct attribute *attr,
209 struct obd_device *obd = container_of(kobj, struct obd_device,
211 struct osc_device *od = obd2osc_dev(obd);
215 rc = kstrtoll(buffer, 0, &val);
219 od->od_contention_time = val;
223 LUSTRE_RW_ATTR(contention_seconds);
225 LUSTRE_RO_ATTR(conn_uuid);
227 LUSTRE_WO_ATTR(ping);
229 static int mdc_cached_mb_seq_show(struct seq_file *m, void *v)
231 struct obd_device *dev = m->private;
232 struct client_obd *cli = &dev->u.cli;
233 int shift = 20 - PAGE_SHIFT;
235 seq_printf(m, "used_mb: %ld\n"
238 (atomic_long_read(&cli->cl_lru_in_list) +
239 atomic_long_read(&cli->cl_lru_busy)) >> shift,
240 atomic_long_read(&cli->cl_lru_busy),
241 cli->cl_lru_reclaim);
246 /* shrink the number of caching pages to a specific number */
248 mdc_cached_mb_seq_write(struct file *file, const char __user *buffer,
249 size_t count, loff_t *off)
251 struct seq_file *sfl = file->private_data;
252 struct obd_device *dev = sfl->private;
253 struct client_obd *cli = &dev->u.cli;
258 if (count >= sizeof(kernbuf))
261 if (copy_from_user(kernbuf, buffer, count))
265 buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
267 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
271 pages_number >>= PAGE_SHIFT;
273 if (pages_number < 0)
276 rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
281 env = cl_env_get(&refcheck);
283 (void)osc_lru_shrink(env, cli, rc, true);
284 cl_env_put(env, &refcheck);
290 LPROC_SEQ_FOPS(mdc_cached_mb);
292 static int mdc_unstable_stats_seq_show(struct seq_file *m, void *v)
294 struct obd_device *dev = m->private;
295 struct client_obd *cli = &dev->u.cli;
299 pages = atomic_long_read(&cli->cl_unstable_count);
300 mb = (pages * PAGE_SIZE) >> 20;
302 seq_printf(m, "unstable_pages: %20ld\n"
303 "unstable_mb: %10d\n", pages, mb);
306 LPROC_SEQ_FOPS_RO(mdc_unstable_stats);
308 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
309 const char __user *buf,
310 size_t len, loff_t *off)
312 struct seq_file *seq = file->private_data;
313 struct obd_device *dev = seq->private;
314 struct client_obd *cli = &dev->u.cli;
316 lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
318 lprocfs_oh_clear(&cli->cl_read_rpc_hist);
319 lprocfs_oh_clear(&cli->cl_write_rpc_hist);
320 lprocfs_oh_clear(&cli->cl_read_page_hist);
321 lprocfs_oh_clear(&cli->cl_write_page_hist);
322 lprocfs_oh_clear(&cli->cl_read_offset_hist);
323 lprocfs_oh_clear(&cli->cl_write_offset_hist);
328 #define pct(a, b) (b ? a * 100 / b : 0)
329 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
331 struct obd_device *dev = seq->private;
332 struct client_obd *cli = &dev->u.cli;
333 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
336 obd_mod_rpc_stats_seq_show(&dev->u.cli, seq);
338 spin_lock(&cli->cl_loi_list_lock);
340 seq_printf(seq, "\nread RPCs in flight: %d\n",
341 cli->cl_r_in_flight);
342 seq_printf(seq, "write RPCs in flight: %d\n",
343 cli->cl_w_in_flight);
344 seq_printf(seq, "pending write pages: %d\n",
345 atomic_read(&cli->cl_pending_w_pages));
346 seq_printf(seq, "pending read pages: %d\n",
347 atomic_read(&cli->cl_pending_r_pages));
349 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
350 seq_printf(seq, "pages per rpc rpcs %% cum %% |");
351 seq_printf(seq, " rpcs %% cum %%\n");
353 read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
354 write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
358 for (i = 0; i < OBD_HIST_MAX; i++) {
359 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
360 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
364 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
365 1 << i, r, pct(r, read_tot),
366 pct(read_cum, read_tot), w,
368 pct(write_cum, write_tot));
369 if (read_cum == read_tot && write_cum == write_tot)
373 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
374 seq_printf(seq, "rpcs in flight rpcs %% cum %% |");
375 seq_printf(seq, " rpcs %% cum %%\n");
377 read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
378 write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
382 for (i = 0; i < OBD_HIST_MAX; i++) {
383 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
384 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
388 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
389 i, r, pct(r, read_tot), pct(read_cum, read_tot), w,
390 pct(w, write_tot), pct(write_cum, write_tot));
391 if (read_cum == read_tot && write_cum == write_tot)
395 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
396 seq_printf(seq, "offset rpcs %% cum %% |");
397 seq_printf(seq, " rpcs %% cum %%\n");
399 read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
400 write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
404 for (i = 0; i < OBD_HIST_MAX; i++) {
405 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
406 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
410 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
411 (i == 0) ? 0 : 1 << (i - 1),
412 r, pct(r, read_tot), pct(read_cum, read_tot),
413 w, pct(w, write_tot), pct(write_cum, write_tot));
414 if (read_cum == read_tot && write_cum == write_tot)
417 spin_unlock(&cli->cl_loi_list_lock);
422 LPROC_SEQ_FOPS(mdc_rpc_stats);
424 static int mdc_stats_seq_show(struct seq_file *seq, void *v)
426 struct timespec64 now;
427 struct obd_device *dev = seq->private;
428 struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
430 ktime_get_real_ts64(&now);
432 seq_printf(seq, "snapshot_time: %lld.%09lu (secs.nsecs)\n",
433 (s64)now.tv_sec, now.tv_nsec);
434 seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
435 stats->os_lockless_writes);
436 seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
437 stats->os_lockless_reads);
438 seq_printf(seq, "lockless_truncate\t\t%llu\n",
439 stats->os_lockless_truncates);
443 static ssize_t mdc_stats_seq_write(struct file *file,
444 const char __user *buf,
445 size_t len, loff_t *off)
447 struct seq_file *seq = file->private_data;
448 struct obd_device *dev = seq->private;
449 struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
451 memset(stats, 0, sizeof(*stats));
454 LPROC_SEQ_FOPS(mdc_stats);
456 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
457 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
458 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
459 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
460 LPROC_SEQ_FOPS_RW_TYPE(mdc, obd_max_pages_per_rpc);
461 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
462 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
464 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
465 { .name = "connect_flags",
466 .fops = &mdc_connect_flags_fops },
467 { .name = "mds_server_uuid",
468 .fops = &mdc_server_uuid_fops },
469 { .name = "max_pages_per_rpc",
470 .fops = &mdc_obd_max_pages_per_rpc_fops },
471 { .name = "max_dirty_mb",
472 .fops = &mdc_max_dirty_mb_fops },
473 { .name = "mdc_cached_mb",
474 .fops = &mdc_cached_mb_fops },
475 { .name = "timeouts",
476 .fops = &mdc_timeouts_fops },
478 .fops = &mdc_import_fops },
480 .fops = &mdc_state_fops },
481 { .name = "pinger_recov",
482 .fops = &mdc_pinger_recov_fops },
483 { .name = "rpc_stats",
484 .fops = &mdc_rpc_stats_fops },
485 { .name = "unstable_stats",
486 .fops = &mdc_unstable_stats_fops },
487 { .name = "mdc_stats",
488 .fops = &mdc_stats_fops },
492 static struct attribute *mdc_attrs[] = {
493 &lustre_attr_active.attr,
494 &lustre_attr_max_rpcs_in_flight.attr,
495 &lustre_attr_max_mod_rpcs_in_flight.attr,
496 &lustre_attr_contention_seconds.attr,
497 &lustre_attr_conn_uuid.attr,
498 &lustre_attr_ping.attr,
502 int mdc_tunables_init(struct obd_device *obd)
506 obd->obd_ktype.default_attrs = mdc_attrs;
507 obd->obd_vars = lprocfs_mdc_obd_vars;
509 rc = lprocfs_obd_setup(obd, false);
512 #ifdef CONFIG_PROC_FS
513 rc = lprocfs_alloc_md_stats(obd, 0);
515 lprocfs_obd_cleanup(obd);
519 rc = sptlrpc_lprocfs_cliobd_attach(obd);
521 #ifdef CONFIG_PROC_FS
522 lprocfs_free_md_stats(obd);
524 lprocfs_obd_cleanup(obd);
527 ptlrpc_lprocfs_register_obd(obd);