1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
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.
9  *
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).
15  *
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.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2012, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  */
36 #define DEBUG_SUBSYSTEM S_CLASS
37 
38 #include <linux/statfs.h>
39 #include "../include/obd_cksum.h"
40 #include "../include/obd_class.h"
41 #include "../include/lprocfs_status.h"
42 #include <linux/seq_file.h>
43 #include "osc_internal.h"
44 
active_show(struct kobject * kobj,struct attribute * attr,char * buf)45 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
46 			   char *buf)
47 {
48 	struct obd_device *dev = container_of(kobj, struct obd_device,
49 					      obd_kobj);
50 
51 	return sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
52 }
53 
active_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)54 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
55 			    const char *buffer,
56 			    size_t count)
57 {
58 	struct obd_device *dev = container_of(kobj, struct obd_device,
59 					      obd_kobj);
60 	int rc;
61 	unsigned long val;
62 
63 	rc = kstrtoul(buffer, 10, &val);
64 	if (rc)
65 		return rc;
66 	if (val > 1)
67 		return -ERANGE;
68 
69 	/* opposite senses */
70 	if (dev->u.cli.cl_import->imp_deactive == val)
71 		rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
72 	else
73 		CDEBUG(D_CONFIG, "activate %ld: ignoring repeat request\n",
74 		       val);
75 
76 	return count;
77 }
78 LUSTRE_RW_ATTR(active);
79 
max_rpcs_in_flight_show(struct kobject * kobj,struct attribute * attr,char * buf)80 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
81 				       struct attribute *attr,
82 				       char *buf)
83 {
84 	struct obd_device *dev = container_of(kobj, struct obd_device,
85 					      obd_kobj);
86 	struct client_obd *cli = &dev->u.cli;
87 
88 	return sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
89 }
90 
max_rpcs_in_flight_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)91 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
92 					struct attribute *attr,
93 					const char *buffer,
94 					size_t count)
95 {
96 	struct obd_device *dev = container_of(kobj, struct obd_device,
97 					      obd_kobj);
98 	struct client_obd *cli = &dev->u.cli;
99 	int rc;
100 	unsigned long val;
101 	int adding, added, req_count;
102 
103 	rc = kstrtoul(buffer, 10, &val);
104 	if (rc)
105 		return rc;
106 
107 	if (val < 1 || val > OSC_MAX_RIF_MAX)
108 		return -ERANGE;
109 
110 	adding = val - cli->cl_max_rpcs_in_flight;
111 	req_count = atomic_read(&osc_pool_req_count);
112 	if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
113 		/*
114 		 * There might be some race which will cause over-limit
115 		 * allocation, but it is fine.
116 		 */
117 		if (req_count + adding > osc_reqpool_maxreqcount)
118 			adding = osc_reqpool_maxreqcount - req_count;
119 
120 		added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
121 		atomic_add(added, &osc_pool_req_count);
122 	}
123 
124 	client_obd_list_lock(&cli->cl_loi_list_lock);
125 	cli->cl_max_rpcs_in_flight = val;
126 	client_obd_list_unlock(&cli->cl_loi_list_lock);
127 
128 	return count;
129 }
130 LUSTRE_RW_ATTR(max_rpcs_in_flight);
131 
max_dirty_mb_show(struct kobject * kobj,struct attribute * attr,char * buf)132 static ssize_t max_dirty_mb_show(struct kobject *kobj,
133 				 struct attribute *attr,
134 				 char *buf)
135 {
136 	struct obd_device *dev = container_of(kobj, struct obd_device,
137 					      obd_kobj);
138 	struct client_obd *cli = &dev->u.cli;
139 	long val;
140 	int mult;
141 
142 	client_obd_list_lock(&cli->cl_loi_list_lock);
143 	val = cli->cl_dirty_max;
144 	client_obd_list_unlock(&cli->cl_loi_list_lock);
145 
146 	mult = 1 << 20;
147 	return lprocfs_read_frac_helper(buf, PAGE_SIZE, val, mult);
148 }
149 
max_dirty_mb_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)150 static ssize_t max_dirty_mb_store(struct kobject *kobj,
151 				  struct attribute *attr,
152 				  const char *buffer,
153 				  size_t count)
154 {
155 	struct obd_device *dev = container_of(kobj, struct obd_device,
156 					      obd_kobj);
157 	struct client_obd *cli = &dev->u.cli;
158 	int rc;
159 	unsigned long pages_number;
160 
161 	rc = kstrtoul(buffer, 10, &pages_number);
162 	if (rc)
163 		return rc;
164 
165 	pages_number *= 1 << (20 - PAGE_CACHE_SHIFT); /* MB -> pages */
166 
167 	if (pages_number <= 0 ||
168 	    pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_CACHE_SHIFT) ||
169 	    pages_number > totalram_pages / 4) /* 1/4 of RAM */
170 		return -ERANGE;
171 
172 	client_obd_list_lock(&cli->cl_loi_list_lock);
173 	cli->cl_dirty_max = (u32)(pages_number << PAGE_CACHE_SHIFT);
174 	osc_wake_cache_waiters(cli);
175 	client_obd_list_unlock(&cli->cl_loi_list_lock);
176 
177 	return count;
178 }
179 LUSTRE_RW_ATTR(max_dirty_mb);
180 
osc_cached_mb_seq_show(struct seq_file * m,void * v)181 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
182 {
183 	struct obd_device *dev = m->private;
184 	struct client_obd *cli = &dev->u.cli;
185 	int shift = 20 - PAGE_CACHE_SHIFT;
186 
187 	seq_printf(m,
188 		   "used_mb: %d\n"
189 		   "busy_cnt: %d\n",
190 		   (atomic_read(&cli->cl_lru_in_list) +
191 		    atomic_read(&cli->cl_lru_busy)) >> shift,
192 		   atomic_read(&cli->cl_lru_busy));
193 
194 	return 0;
195 }
196 
197 /* shrink the number of caching pages to a specific number */
osc_cached_mb_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)198 static ssize_t osc_cached_mb_seq_write(struct file *file,
199 				       const char __user *buffer,
200 				       size_t count, loff_t *off)
201 {
202 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
203 	struct client_obd *cli = &dev->u.cli;
204 	int pages_number, mult, rc;
205 	char kernbuf[128];
206 
207 	if (count >= sizeof(kernbuf))
208 		return -EINVAL;
209 
210 	if (copy_from_user(kernbuf, buffer, count))
211 		return -EFAULT;
212 	kernbuf[count] = 0;
213 
214 	mult = 1 << (20 - PAGE_CACHE_SHIFT);
215 	buffer += lprocfs_find_named_value(kernbuf, "used_mb:", &count) -
216 		  kernbuf;
217 	rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
218 	if (rc)
219 		return rc;
220 
221 	if (pages_number < 0)
222 		return -ERANGE;
223 
224 	rc = atomic_read(&cli->cl_lru_in_list) - pages_number;
225 	if (rc > 0)
226 		(void)osc_lru_shrink(cli, rc);
227 
228 	return count;
229 }
230 
231 LPROC_SEQ_FOPS(osc_cached_mb);
232 
cur_dirty_bytes_show(struct kobject * kobj,struct attribute * attr,char * buf)233 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
234 				    struct attribute *attr,
235 				    char *buf)
236 {
237 	struct obd_device *dev = container_of(kobj, struct obd_device,
238 					      obd_kobj);
239 	struct client_obd *cli = &dev->u.cli;
240 	int len;
241 
242 	client_obd_list_lock(&cli->cl_loi_list_lock);
243 	len = sprintf(buf, "%lu\n", cli->cl_dirty);
244 	client_obd_list_unlock(&cli->cl_loi_list_lock);
245 
246 	return len;
247 }
248 LUSTRE_RO_ATTR(cur_dirty_bytes);
249 
cur_grant_bytes_show(struct kobject * kobj,struct attribute * attr,char * buf)250 static ssize_t cur_grant_bytes_show(struct kobject *kobj,
251 				    struct attribute *attr,
252 				    char *buf)
253 {
254 	struct obd_device *dev = container_of(kobj, struct obd_device,
255 					      obd_kobj);
256 	struct client_obd *cli = &dev->u.cli;
257 	int len;
258 
259 	client_obd_list_lock(&cli->cl_loi_list_lock);
260 	len = sprintf(buf, "%lu\n", cli->cl_avail_grant);
261 	client_obd_list_unlock(&cli->cl_loi_list_lock);
262 
263 	return len;
264 }
265 
cur_grant_bytes_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)266 static ssize_t cur_grant_bytes_store(struct kobject *kobj,
267 				     struct attribute *attr,
268 				     const char *buffer,
269 				     size_t count)
270 {
271 	struct obd_device *obd = container_of(kobj, struct obd_device,
272 					      obd_kobj);
273 	struct client_obd *cli = &obd->u.cli;
274 	int rc;
275 	unsigned long long val;
276 
277 	rc = kstrtoull(buffer, 10, &val);
278 	if (rc)
279 		return rc;
280 
281 	/* this is only for shrinking grant */
282 	client_obd_list_lock(&cli->cl_loi_list_lock);
283 	if (val >= cli->cl_avail_grant) {
284 		client_obd_list_unlock(&cli->cl_loi_list_lock);
285 		return -EINVAL;
286 	}
287 	client_obd_list_unlock(&cli->cl_loi_list_lock);
288 
289 	if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
290 		rc = osc_shrink_grant_to_target(cli, val);
291 	if (rc)
292 		return rc;
293 	return count;
294 }
295 LUSTRE_RW_ATTR(cur_grant_bytes);
296 
cur_lost_grant_bytes_show(struct kobject * kobj,struct attribute * attr,char * buf)297 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
298 					 struct attribute *attr,
299 					 char *buf)
300 {
301 	struct obd_device *dev = container_of(kobj, struct obd_device,
302 					      obd_kobj);
303 	struct client_obd *cli = &dev->u.cli;
304 	int len;
305 
306 	client_obd_list_lock(&cli->cl_loi_list_lock);
307 	len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
308 	client_obd_list_unlock(&cli->cl_loi_list_lock);
309 
310 	return len;
311 }
312 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
313 
grant_shrink_interval_show(struct kobject * kobj,struct attribute * attr,char * buf)314 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
315 					  struct attribute *attr,
316 					  char *buf)
317 {
318 	struct obd_device *obd = container_of(kobj, struct obd_device,
319 					      obd_kobj);
320 
321 	return sprintf(buf, "%d\n", obd->u.cli.cl_grant_shrink_interval);
322 }
323 
grant_shrink_interval_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)324 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
325 					   struct attribute *attr,
326 					   const char *buffer,
327 					   size_t count)
328 {
329 	struct obd_device *obd = container_of(kobj, struct obd_device,
330 					      obd_kobj);
331 	int rc;
332 	unsigned long val;
333 
334 	rc = kstrtoul(buffer, 10, &val);
335 	if (rc)
336 		return rc;
337 
338 	if (val <= 0)
339 		return -ERANGE;
340 
341 	obd->u.cli.cl_grant_shrink_interval = val;
342 
343 	return count;
344 }
345 LUSTRE_RW_ATTR(grant_shrink_interval);
346 
checksums_show(struct kobject * kobj,struct attribute * attr,char * buf)347 static ssize_t checksums_show(struct kobject *kobj,
348 			      struct attribute *attr,
349 			      char *buf)
350 {
351 	struct obd_device *obd = container_of(kobj, struct obd_device,
352 					      obd_kobj);
353 
354 	return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
355 }
356 
checksums_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)357 static ssize_t checksums_store(struct kobject *kobj,
358 			       struct attribute *attr,
359 			       const char *buffer,
360 			       size_t count)
361 {
362 	struct obd_device *obd = container_of(kobj, struct obd_device,
363 					      obd_kobj);
364 	int rc;
365 	unsigned long val;
366 
367 	rc = kstrtoul(buffer, 10, &val);
368 	if (rc)
369 		return rc;
370 
371 	obd->u.cli.cl_checksum = (val ? 1 : 0);
372 
373 	return count;
374 }
375 LUSTRE_RW_ATTR(checksums);
376 
osc_checksum_type_seq_show(struct seq_file * m,void * v)377 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
378 {
379 	struct obd_device *obd = m->private;
380 	int i;
381 
382 	DECLARE_CKSUM_NAME;
383 
384 	if (obd == NULL)
385 		return 0;
386 
387 	for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
388 		if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
389 			continue;
390 		if (obd->u.cli.cl_cksum_type == (1 << i))
391 			seq_printf(m, "[%s] ", cksum_name[i]);
392 		else
393 			seq_printf(m, "%s ", cksum_name[i]);
394 	}
395 	seq_putc(m, '\n');
396 	return 0;
397 }
398 
osc_checksum_type_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)399 static ssize_t osc_checksum_type_seq_write(struct file *file,
400 				const char __user *buffer,
401 				size_t count, loff_t *off)
402 {
403 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
404 	int i;
405 
406 	DECLARE_CKSUM_NAME;
407 	char kernbuf[10];
408 
409 	if (obd == NULL)
410 		return 0;
411 
412 	if (count > sizeof(kernbuf) - 1)
413 		return -EINVAL;
414 	if (copy_from_user(kernbuf, buffer, count))
415 		return -EFAULT;
416 	if (count > 0 && kernbuf[count - 1] == '\n')
417 		kernbuf[count - 1] = '\0';
418 	else
419 		kernbuf[count] = '\0';
420 
421 	for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
422 		if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
423 			continue;
424 		if (!strcmp(kernbuf, cksum_name[i])) {
425 		       obd->u.cli.cl_cksum_type = 1 << i;
426 		       return count;
427 		}
428 	}
429 	return -EINVAL;
430 }
431 
432 LPROC_SEQ_FOPS(osc_checksum_type);
433 
resend_count_show(struct kobject * kobj,struct attribute * attr,char * buf)434 static ssize_t resend_count_show(struct kobject *kobj,
435 				 struct attribute *attr,
436 				 char *buf)
437 {
438 	struct obd_device *obd = container_of(kobj, struct obd_device,
439 					      obd_kobj);
440 
441 	return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
442 }
443 
resend_count_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)444 static ssize_t resend_count_store(struct kobject *kobj,
445 				  struct attribute *attr,
446 				  const char *buffer,
447 				  size_t count)
448 {
449 	struct obd_device *obd = container_of(kobj, struct obd_device,
450 					      obd_kobj);
451 	int rc;
452 	unsigned long val;
453 
454 	rc = kstrtoul(buffer, 10, &val);
455 	if (rc)
456 		return rc;
457 
458 	atomic_set(&obd->u.cli.cl_resends, val);
459 
460 	return count;
461 }
462 LUSTRE_RW_ATTR(resend_count);
463 
contention_seconds_show(struct kobject * kobj,struct attribute * attr,char * buf)464 static ssize_t contention_seconds_show(struct kobject *kobj,
465 				       struct attribute *attr,
466 				       char *buf)
467 {
468 	struct obd_device *obd = container_of(kobj, struct obd_device,
469 					      obd_kobj);
470 	struct osc_device *od  = obd2osc_dev(obd);
471 
472 	return sprintf(buf, "%u\n", od->od_contention_time);
473 }
474 
contention_seconds_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)475 static ssize_t contention_seconds_store(struct kobject *kobj,
476 					struct attribute *attr,
477 					const char *buffer,
478 					size_t count)
479 {
480 	struct obd_device *obd = container_of(kobj, struct obd_device,
481 					      obd_kobj);
482 	struct osc_device *od  = obd2osc_dev(obd);
483 
484 	return lprocfs_write_helper(buffer, count, &od->od_contention_time) ?:
485 		count;
486 }
487 LUSTRE_RW_ATTR(contention_seconds);
488 
lockless_truncate_show(struct kobject * kobj,struct attribute * attr,char * buf)489 static ssize_t lockless_truncate_show(struct kobject *kobj,
490 				      struct attribute *attr,
491 				      char *buf)
492 {
493 	struct obd_device *obd = container_of(kobj, struct obd_device,
494 					      obd_kobj);
495 	struct osc_device *od  = obd2osc_dev(obd);
496 
497 	return sprintf(buf, "%u\n", od->od_lockless_truncate);
498 }
499 
lockless_truncate_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)500 static ssize_t lockless_truncate_store(struct kobject *kobj,
501 				       struct attribute *attr,
502 				       const char *buffer,
503 				       size_t count)
504 {
505 	struct obd_device *obd = container_of(kobj, struct obd_device,
506 					      obd_kobj);
507 	struct osc_device *od  = obd2osc_dev(obd);
508 
509 	return lprocfs_write_helper(buffer, count, &od->od_lockless_truncate) ?:
510 		count;
511 }
512 LUSTRE_RW_ATTR(lockless_truncate);
513 
destroys_in_flight_show(struct kobject * kobj,struct attribute * attr,char * buf)514 static ssize_t destroys_in_flight_show(struct kobject *kobj,
515 				       struct attribute *attr,
516 				       char *buf)
517 {
518 	struct obd_device *obd = container_of(kobj, struct obd_device,
519 					      obd_kobj);
520 
521 	return sprintf(buf, "%u\n",
522 		       atomic_read(&obd->u.cli.cl_destroy_in_flight));
523 }
524 LUSTRE_RO_ATTR(destroys_in_flight);
525 
max_pages_per_rpc_show(struct kobject * kobj,struct attribute * attr,char * buf)526 static ssize_t max_pages_per_rpc_show(struct kobject *kobj,
527 				      struct attribute *attr,
528 				      char *buf)
529 {
530 	struct obd_device *dev = container_of(kobj, struct obd_device,
531 					      obd_kobj);
532 	struct client_obd *cli = &dev->u.cli;
533 
534 	return sprintf(buf, "%d\n", cli->cl_max_pages_per_rpc);
535 }
536 
max_pages_per_rpc_store(struct kobject * kobj,struct attribute * attr,const char * buffer,size_t count)537 static ssize_t max_pages_per_rpc_store(struct kobject *kobj,
538 				       struct attribute *attr,
539 				       const char *buffer,
540 				       size_t count)
541 {
542 	struct obd_device *dev = container_of(kobj, struct obd_device,
543 					      obd_kobj);
544 	struct client_obd *cli = &dev->u.cli;
545 	struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
546 	int chunk_mask, rc;
547 	unsigned long long val;
548 
549 	rc = kstrtoull(buffer, 10, &val);
550 	if (rc)
551 		return rc;
552 
553 	/* if the max_pages is specified in bytes, convert to pages */
554 	if (val >= ONE_MB_BRW_SIZE)
555 		val >>= PAGE_CACHE_SHIFT;
556 
557 	chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_CACHE_SHIFT)) - 1);
558 	/* max_pages_per_rpc must be chunk aligned */
559 	val = (val + ~chunk_mask) & chunk_mask;
560 	if (val == 0 || val > ocd->ocd_brw_size >> PAGE_CACHE_SHIFT) {
561 		return -ERANGE;
562 	}
563 	client_obd_list_lock(&cli->cl_loi_list_lock);
564 	cli->cl_max_pages_per_rpc = val;
565 	client_obd_list_unlock(&cli->cl_loi_list_lock);
566 
567 	return count;
568 }
569 LUSTRE_RW_ATTR(max_pages_per_rpc);
570 
571 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
572 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
573 LPROC_SEQ_FOPS_RO_TYPE(osc, conn_uuid);
574 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
575 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
576 
577 LPROC_SEQ_FOPS_WR_ONLY(osc, ping);
578 
579 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
580 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
581 
582 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
583 	{ "ping",	     &osc_ping_fops,    NULL, 0222 },
584 	{ "connect_flags",   &osc_connect_flags_fops, NULL, 0 },
585 	/*{ "filegroups",      lprocfs_rd_filegroups,  NULL, 0 },*/
586 	{ "ost_server_uuid", &osc_server_uuid_fops, NULL, 0 },
587 	{ "ost_conn_uuid",   &osc_conn_uuid_fops, NULL, 0 },
588 	{ "osc_cached_mb",   &osc_cached_mb_fops, NULL },
589 	{ "checksum_type",   &osc_checksum_type_fops, NULL },
590 	{ "timeouts",	     &osc_timeouts_fops, NULL, 0 },
591 	{ "import",		&osc_import_fops, NULL },
592 	{ "state",		&osc_state_fops, NULL, 0 },
593 	{ "pinger_recov",	&osc_pinger_recov_fops, NULL },
594 	{ NULL }
595 };
596 
597 #define pct(a, b) (b ? a * 100 / b : 0)
598 
osc_rpc_stats_seq_show(struct seq_file * seq,void * v)599 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
600 {
601 	struct timespec64 now;
602 	struct obd_device *dev = seq->private;
603 	struct client_obd *cli = &dev->u.cli;
604 	unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
605 	int i;
606 
607 	ktime_get_real_ts64(&now);
608 
609 	client_obd_list_lock(&cli->cl_loi_list_lock);
610 
611 	seq_printf(seq, "snapshot_time:	 %llu.%9lu (secs.usecs)\n",
612 		   (s64)now.tv_sec, (unsigned long)now.tv_nsec);
613 	seq_printf(seq, "read RPCs in flight:  %d\n",
614 		   cli->cl_r_in_flight);
615 	seq_printf(seq, "write RPCs in flight: %d\n",
616 		   cli->cl_w_in_flight);
617 	seq_printf(seq, "pending write pages:  %d\n",
618 		   atomic_read(&cli->cl_pending_w_pages));
619 	seq_printf(seq, "pending read pages:   %d\n",
620 		   atomic_read(&cli->cl_pending_r_pages));
621 
622 	seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
623 	seq_puts(seq, "pages per rpc	 rpcs   % cum % |");
624 	seq_puts(seq, "       rpcs   % cum %\n");
625 
626 	read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
627 	write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
628 
629 	read_cum = 0;
630 	write_cum = 0;
631 	for (i = 0; i < OBD_HIST_MAX; i++) {
632 		unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
633 		unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
634 
635 		read_cum += r;
636 		write_cum += w;
637 		seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
638 				 1 << i, r, pct(r, read_tot),
639 				 pct(read_cum, read_tot), w,
640 				 pct(w, write_tot),
641 				 pct(write_cum, write_tot));
642 		if (read_cum == read_tot && write_cum == write_tot)
643 			break;
644 	}
645 
646 	seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
647 	seq_puts(seq, "rpcs in flight	rpcs   % cum % |");
648 	seq_puts(seq, "       rpcs   % cum %\n");
649 
650 	read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
651 	write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
652 
653 	read_cum = 0;
654 	write_cum = 0;
655 	for (i = 0; i < OBD_HIST_MAX; i++) {
656 		unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
657 		unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
658 
659 		read_cum += r;
660 		write_cum += w;
661 		seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
662 				 i, r, pct(r, read_tot),
663 				 pct(read_cum, read_tot), w,
664 				 pct(w, write_tot),
665 				 pct(write_cum, write_tot));
666 		if (read_cum == read_tot && write_cum == write_tot)
667 			break;
668 	}
669 
670 	seq_puts(seq, "\n\t\t\tread\t\t\twrite\n");
671 	seq_puts(seq, "offset		rpcs   % cum % |");
672 	seq_puts(seq, "       rpcs   % cum %\n");
673 
674 	read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
675 	write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
676 
677 	read_cum = 0;
678 	write_cum = 0;
679 	for (i = 0; i < OBD_HIST_MAX; i++) {
680 		unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
681 		unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
682 
683 		read_cum += r;
684 		write_cum += w;
685 		seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
686 			   (i == 0) ? 0 : 1 << (i - 1),
687 			   r, pct(r, read_tot), pct(read_cum, read_tot),
688 			   w, pct(w, write_tot), pct(write_cum, write_tot));
689 		if (read_cum == read_tot && write_cum == write_tot)
690 			break;
691 	}
692 
693 	client_obd_list_unlock(&cli->cl_loi_list_lock);
694 
695 	return 0;
696 }
697 
698 #undef pct
699 
osc_rpc_stats_seq_write(struct file * file,const char __user * buf,size_t len,loff_t * off)700 static ssize_t osc_rpc_stats_seq_write(struct file *file,
701 				       const char __user *buf,
702 				       size_t len, loff_t *off)
703 {
704 	struct seq_file *seq = file->private_data;
705 	struct obd_device *dev = seq->private;
706 	struct client_obd *cli = &dev->u.cli;
707 
708 	lprocfs_oh_clear(&cli->cl_read_rpc_hist);
709 	lprocfs_oh_clear(&cli->cl_write_rpc_hist);
710 	lprocfs_oh_clear(&cli->cl_read_page_hist);
711 	lprocfs_oh_clear(&cli->cl_write_page_hist);
712 	lprocfs_oh_clear(&cli->cl_read_offset_hist);
713 	lprocfs_oh_clear(&cli->cl_write_offset_hist);
714 
715 	return len;
716 }
717 
718 LPROC_SEQ_FOPS(osc_rpc_stats);
719 
osc_stats_seq_show(struct seq_file * seq,void * v)720 static int osc_stats_seq_show(struct seq_file *seq, void *v)
721 {
722 	struct timespec64 now;
723 	struct obd_device *dev = seq->private;
724 	struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
725 
726 	ktime_get_real_ts64(&now);
727 
728 	seq_printf(seq, "snapshot_time:	 %llu.%9lu (secs.usecs)\n",
729 		   (s64)now.tv_sec, (unsigned long)now.tv_nsec);
730 	seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
731 		   stats->os_lockless_writes);
732 	seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
733 		   stats->os_lockless_reads);
734 	seq_printf(seq, "lockless_truncate\t\t%llu\n",
735 		   stats->os_lockless_truncates);
736 	return 0;
737 }
738 
osc_stats_seq_write(struct file * file,const char __user * buf,size_t len,loff_t * off)739 static ssize_t osc_stats_seq_write(struct file *file,
740 				   const char __user *buf,
741 				   size_t len, loff_t *off)
742 {
743 	struct seq_file *seq = file->private_data;
744 	struct obd_device *dev = seq->private;
745 	struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
746 
747 	memset(stats, 0, sizeof(*stats));
748 	return len;
749 }
750 
751 LPROC_SEQ_FOPS(osc_stats);
752 
lproc_osc_attach_seqstat(struct obd_device * dev)753 int lproc_osc_attach_seqstat(struct obd_device *dev)
754 {
755 	int rc;
756 
757 	rc = ldebugfs_seq_create(dev->obd_debugfs_entry, "osc_stats", 0644,
758 				 &osc_stats_fops, dev);
759 	if (rc == 0)
760 		rc = ldebugfs_obd_seq_create(dev, "rpc_stats", 0644,
761 					     &osc_rpc_stats_fops, dev);
762 
763 	return rc;
764 }
765 
766 static struct attribute *osc_attrs[] = {
767 	&lustre_attr_active.attr,
768 	&lustre_attr_checksums.attr,
769 	&lustre_attr_contention_seconds.attr,
770 	&lustre_attr_cur_dirty_bytes.attr,
771 	&lustre_attr_cur_grant_bytes.attr,
772 	&lustre_attr_cur_lost_grant_bytes.attr,
773 	&lustre_attr_destroys_in_flight.attr,
774 	&lustre_attr_grant_shrink_interval.attr,
775 	&lustre_attr_lockless_truncate.attr,
776 	&lustre_attr_max_dirty_mb.attr,
777 	&lustre_attr_max_pages_per_rpc.attr,
778 	&lustre_attr_max_rpcs_in_flight.attr,
779 	&lustre_attr_resend_count.attr,
780 	NULL,
781 };
782 
783 static struct attribute_group osc_attr_group = {
784 	.attrs = osc_attrs,
785 };
786 
lprocfs_osc_init_vars(struct lprocfs_static_vars * lvars)787 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
788 {
789 	lvars->sysfs_vars  = &osc_attr_group;
790 	lvars->obd_vars    = lprocfs_osc_obd_vars;
791 }
792