1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 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_LLITE
24 #include <linux/version.h>
25 #include <linux/lustre_lite.h>
26 #include <linux/lprocfs_status.h>
27 #include <linux/seq_file.h>
28 #include <linux/obd_support.h>
30 #include <linux/mm_inline.h>
33 #include "llite_internal.h"
35 /* /proc/lustre/llite mount point registration */
36 struct proc_dir_entry *proc_lustre_fs_root;
37 struct file_operations llite_dump_pgcache_fops;
38 struct file_operations ll_ra_stats_fops;
39 struct file_operations llite_wait_times_fops;
42 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
43 struct super_block *sb, char *osc, char *mdc)
47 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi){}
50 long long mnt_instance;
52 static int ll_rd_blksize(char *page, char **start, off_t off, int count,
55 struct super_block *sb = (struct super_block *)data;
56 struct obd_statfs osfs;
60 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
63 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
69 static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count,
72 struct super_block *sb = (struct super_block *)data;
73 struct obd_statfs osfs;
77 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
79 __u32 blk_size = osfs.os_bsize >> 10;
80 __u64 result = osfs.os_blocks;
82 while (blk_size >>= 1)
86 rc = snprintf(page, count, LPU64"\n", result);
92 static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count,
95 struct super_block *sb = (struct super_block *)data;
96 struct obd_statfs osfs;
100 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
102 __u32 blk_size = osfs.os_bsize >> 10;
103 __u64 result = osfs.os_bfree;
105 while (blk_size >>= 1)
109 rc = snprintf(page, count, LPU64"\n", result);
114 static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count,
115 int *eof, void *data)
117 struct super_block *sb = (struct super_block *)data;
118 struct obd_statfs osfs;
122 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
124 __u32 blk_size = osfs.os_bsize >> 10;
125 __u64 result = osfs.os_bavail;
127 while (blk_size >>= 1)
131 rc = snprintf(page, count, LPU64"\n", result);
136 static int ll_rd_filestotal(char *page, char **start, off_t off, int count,
137 int *eof, void *data)
139 struct super_block *sb = (struct super_block *)data;
140 struct obd_statfs osfs;
144 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
147 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
152 static int ll_rd_filesfree(char *page, char **start, off_t off, int count,
153 int *eof, void *data)
155 struct super_block *sb = (struct super_block *)data;
156 struct obd_statfs osfs;
160 rc = ll_statfs_internal(sb, &osfs, jiffies - HZ);
163 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
169 static int ll_rd_fstype(char *page, char **start, off_t off, int count,
170 int *eof, void *data)
172 struct super_block *sb = (struct super_block*)data;
176 return snprintf(page, count, "%s\n", sb->s_type->name);
179 static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count,
180 int *eof, void *data)
182 struct super_block *sb = (struct super_block *)data;
186 return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
189 static int ll_rd_read_ahead(char *page, char **start, off_t off, int count,
190 int *eof, void *data)
192 struct super_block *sb = (struct super_block*)data;
193 struct ll_sb_info *sbi = ll_s2sbi(sb);
198 val = (sbi->ll_flags & LL_SBI_READAHEAD) ? 1 : 0;
199 rc = snprintf(page, count, "%d\n", val);
203 static int ll_wr_read_ahead(struct file *file, const char *buffer,
204 unsigned long count, void *data)
206 struct super_block *sb = (struct super_block*)data;
207 struct ll_sb_info *sbi = ll_s2sbi(sb);
211 if (sscanf(buffer, "%d", &readahead) != 1)
215 sbi->ll_flags |= LL_SBI_READAHEAD;
217 sbi->ll_flags &= ~LL_SBI_READAHEAD;
222 static int ll_wr_config_update(struct file *file, const char *buffer,
223 unsigned long count, void *data)
225 struct super_block *sb = (struct super_block*)data;
226 struct ll_sb_info *sbi = ll_s2sbi(sb);
229 CWARN("Starting a LOV/OST update !\n");
230 RETURN(ll_process_config_update(sbi, 0));
233 static int ll_rd_max_read_ahead_mb(char *page, char **start, off_t off,
234 int count, int *eof, void *data)
236 struct super_block *sb = data;
237 struct ll_sb_info *sbi = ll_s2sbi(sb);
240 spin_lock(&sbi->ll_lock);
241 val = (sbi->ll_ra_info.ra_max_pages << PAGE_CACHE_SHIFT) >> 20;
242 spin_unlock(&sbi->ll_lock);
244 return snprintf(page, count, "%u\n", val);
247 static int ll_wr_max_read_ahead_mb(struct file *file, const char *buffer,
248 unsigned long count, void *data)
250 struct super_block *sb = data;
251 struct ll_sb_info *sbi = ll_s2sbi(sb);
254 rc = lprocfs_write_helper(buffer, count, &val);
258 if (val < 0 || val > (num_physpages << PAGE_SHIFT) >> 20)
261 spin_lock(&sbi->ll_lock);
262 sbi->ll_ra_info.ra_max_pages = (val << 20) >> PAGE_CACHE_SHIFT;
263 spin_unlock(&sbi->ll_lock);
268 static int ll_rd_gns_upcall(char *page, char **start, off_t off,
269 int count, int *eof, void *data)
271 struct super_block *sb = (struct super_block *)data;
272 struct ll_sb_info *sbi = ll_s2sbi(sb);
275 down(&sbi->ll_gns_sem);
276 len = snprintf(page, count, "%s\n", sbi->ll_gns_upcall);
277 up(&sbi->ll_gns_sem);
282 static int ll_wr_gns_upcall(struct file *file, const char *buffer,
283 unsigned long count, void *data)
285 struct super_block *sb = (struct super_block *)data;
286 struct ll_sb_info *sbi = ll_s2sbi(sb);
288 down(&sbi->ll_gns_sem);
289 snprintf(sbi->ll_gns_upcall, count, "%s", buffer);
290 up(&sbi->ll_gns_sem);
295 static int ll_rd_gns_object_name(char *page, char **start, off_t off,
296 int count, int *eof, void *data)
298 struct super_block *sb = (struct super_block *)data;
299 struct ll_sb_info *sbi = ll_s2sbi(sb);
302 down(&sbi->ll_gns_sem);
303 len = snprintf(page, count, "%s\n", sbi->ll_gns_oname);
304 up(&sbi->ll_gns_sem);
309 static int ll_wr_gns_object_name(struct file *file, const char *buffer,
310 unsigned long count, void *data)
312 struct super_block *sb = (struct super_block *)data;
313 struct ll_sb_info *sbi = ll_s2sbi(sb);
315 down(&sbi->ll_gns_sem);
316 snprintf(sbi->ll_gns_oname, count, "%s", buffer);
317 up(&sbi->ll_gns_sem);
322 static int ll_rd_gns_timeout(char *page, char **start, off_t off,
323 int count, int *eof, void *data)
325 struct super_block *sb = (struct super_block *)data;
326 struct ll_sb_info *sbi = ll_s2sbi(sb);
329 down(&sbi->ll_gns_sem);
330 len = snprintf(page, count, "%lu\n",
331 (unsigned long)sbi->ll_gns_timeout);
332 up(&sbi->ll_gns_sem);
337 static int ll_wr_gns_timeout(struct file *file, const char *buffer,
338 unsigned long count, void *data)
340 struct super_block *sb = (struct super_block *)data;
341 struct ll_sb_info *sbi = ll_s2sbi(sb);
344 rc = lprocfs_write_helper(buffer, count, &val);
348 down(&sbi->ll_gns_sem);
349 sbi->ll_gns_timeout = val;
350 up(&sbi->ll_gns_sem);
355 static int ll_rd_gns_tick(char *page, char **start, off_t off,
356 int count, int *eof, void *data)
358 struct super_block *sb = (struct super_block *)data;
359 struct ll_sb_info *sbi = ll_s2sbi(sb);
362 down(&sbi->ll_gns_sem);
363 len = snprintf(page, count, "%lu\n",
364 (unsigned long)sbi->ll_gns_tick);
365 up(&sbi->ll_gns_sem);
370 static int ll_wr_gns_tick(struct file *file, const char *buffer,
371 unsigned long count, void *data)
373 struct super_block *sb = (struct super_block *)data;
374 struct ll_sb_info *sbi = ll_s2sbi(sb);
377 rc = lprocfs_write_helper(buffer, count, &val);
381 down(&sbi->ll_gns_sem);
382 if (sbi->ll_gns_tick < sbi->ll_gns_timeout)
383 sbi->ll_gns_tick = val;
384 up(&sbi->ll_gns_sem);
388 static struct lprocfs_vars lprocfs_obd_vars[] = {
389 { "uuid", ll_rd_sb_uuid, 0, 0 },
390 //{ "mntpt_path", ll_rd_path, 0, 0 },
391 { "fstype", ll_rd_fstype, 0, 0 },
392 { "blocksize", ll_rd_blksize, 0, 0 },
393 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
394 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
395 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
396 { "filestotal", ll_rd_filestotal, 0, 0 },
397 { "filesfree", ll_rd_filesfree, 0, 0 },
398 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
399 { "read_ahead", ll_rd_read_ahead, ll_wr_read_ahead, 0 },
400 { "config_update", 0, ll_wr_config_update, 0 },
401 { "max_read_ahead_mb", ll_rd_max_read_ahead_mb,
402 ll_wr_max_read_ahead_mb, 0 },
404 { "gns_upcall", ll_rd_gns_upcall,
405 ll_wr_gns_upcall, 0 },
407 { "gns_timeout", ll_rd_gns_timeout,
408 ll_wr_gns_timeout, 0 },
410 { "gns_tick", ll_rd_gns_tick,
413 { "gns_object_name", ll_rd_gns_object_name,
414 ll_wr_gns_object_name, 0 },
419 #define MAX_STRING_SIZE 128
421 struct llite_file_opcode {
425 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
427 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
428 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
429 { LPROC_LL_WB_WRITEPAGE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
430 "writeback_from_writepage" },
431 { LPROC_LL_WB_PRESSURE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
432 "writeback_from_pressure" },
433 { LPROC_LL_WB_OK, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
434 "writeback_ok_pages" },
435 { LPROC_LL_WB_FAIL, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
436 "writeback_failed_pages" },
437 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
439 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
441 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
443 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
446 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
447 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
448 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
449 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
450 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
451 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
452 /* inode operation */
453 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
454 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "punch" },
455 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
456 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
458 { LPROC_LL_REVALIDATE, LPROCFS_TYPE_REGS, "getattr" },
460 /* special inode operation */
461 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
462 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
463 { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
465 { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
467 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
468 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
471 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
472 struct super_block *sb, char *osc, char *mdc)
474 struct lprocfs_vars lvars[2];
475 struct ll_sb_info *sbi = ll_s2sbi(sb);
476 struct obd_device *obd;
477 char name[MAX_STRING_SIZE + 1];
479 struct lprocfs_stats *svc_stats = NULL;
480 struct proc_dir_entry *mdc_symlink, *osc_symlink;
481 struct proc_dir_entry *entry;
484 memset(lvars, 0, sizeof(lvars));
486 name[MAX_STRING_SIZE] = '\0';
487 lvars[0].name = name;
489 LASSERT(sbi != NULL);
490 LASSERT(mdc != NULL);
491 LASSERT(osc != NULL);
494 snprintf(name, MAX_STRING_SIZE, "fs%llu", mnt_instance);
497 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
498 if (IS_ERR(sbi->ll_proc_root)) {
499 err = PTR_ERR(sbi->ll_proc_root);
500 sbi->ll_proc_root = NULL;
504 entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root);
506 GOTO(out, err = -ENOMEM);
507 entry->proc_fops = &llite_dump_pgcache_fops;
510 entry = create_proc_entry("wait_times", 0444, sbi->ll_proc_root);
512 GOTO(out, err = -ENOMEM);
513 entry->proc_fops = &llite_wait_times_fops;
516 entry = create_proc_entry("read_ahead_stats", 0444, sbi->ll_proc_root);
518 GOTO(out, err = -ENOMEM);
519 entry->proc_fops = &ll_ra_stats_fops;
522 svc_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES);
523 if (svc_stats == NULL) {
527 /* do counter init */
528 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
529 __u32 type = llite_opcode_table[id].type;
531 if (type & LPROCFS_TYPE_REGS)
534 if (type & LPROCFS_TYPE_BYTES)
537 if (type & LPROCFS_TYPE_PAGES)
541 lprocfs_counter_init(svc_stats, llite_opcode_table[id].opcode,
542 (type & LPROCFS_CNTR_AVGMINMAX),
543 llite_opcode_table[id].opname, ptr);
545 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", svc_stats);
549 sbi->ll_stats = svc_stats;
550 /* need place to keep svc_stats */
552 /* Static configuration info */
553 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_obd_vars, sb);
558 obd = class_name2obd(mdc);
560 LASSERT(obd != NULL);
561 LASSERT(obd->obd_type != NULL);
562 LASSERT(obd->obd_type->typ_name != NULL);
564 snprintf(name, MAX_STRING_SIZE, "../../%s/%s",
565 obd->obd_type->typ_name, obd->obd_name);
566 mdc_symlink = proc_symlink(obd->obd_type->typ_name, sbi->ll_proc_root,
568 if (mdc_symlink == NULL) {
574 obd = class_name2obd(osc);
576 LASSERT(obd != NULL);
577 LASSERT(obd->obd_type != NULL);
578 LASSERT(obd->obd_type->typ_name != NULL);
580 snprintf(name, MAX_STRING_SIZE, "../../%s/%s",
581 obd->obd_type->typ_name, obd->obd_name);
582 osc_symlink = proc_symlink(obd->obd_type->typ_name, sbi->ll_proc_root,
584 if (osc_symlink == NULL)
591 lprocfs_free_stats(svc_stats);
592 if (sbi->ll_proc_root)
593 lprocfs_remove(sbi->ll_proc_root);
598 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
600 if (sbi->ll_proc_root) {
601 struct proc_dir_entry *file_stats =
602 lprocfs_srch(sbi->ll_proc_root, "stats");
605 lprocfs_free_stats(sbi->ll_stats);
606 lprocfs_remove(file_stats);
610 #undef MAX_STRING_SIZE
612 static struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
613 struct list_head *list)
615 struct ll_async_page *llap;
616 struct list_head *pos;
618 list_for_each(pos, list) {
619 if (pos == &sbi->ll_pglist)
621 llap = list_entry(pos, struct ll_async_page, llap_proc_item);
622 if (llap->llap_page == NULL)
630 #define seq_page_flag(seq, page, flag, has_flags) do { \
631 if (test_bit(PG_##flag, &(page)->flags)) { \
635 seq_putc(seq, '|'); \
636 seq_puts(seq, #flag); \
640 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
642 struct ll_async_page *llap, *dummy_llap = seq->private;
643 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
645 /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
646 * it in our own state */
647 if (dummy_llap->llap_magic == 0) {
648 seq_printf(seq, "generation | llap cookie origin | page ");
649 seq_printf(seq, "inode index count [ page flags ]\n");
653 spin_lock(&sbi->ll_lock);
655 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
658 struct page *page = llap->llap_page;
659 static char *origins[] = {
660 [LLAP_ORIGIN_UNKNOWN] = "--",
661 [LLAP_ORIGIN_READPAGE] = "rp",
662 [LLAP_ORIGIN_READAHEAD] = "ra",
663 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
664 [LLAP_ORIGIN_WRITEPAGE] = "wp",
667 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
670 seq_printf(seq, "%lu | %p %p %s | %p %p %lu %u [",
672 llap, llap->llap_cookie,
673 origins[llap->llap_origin],
674 page, page->mapping->host, page->index,
676 seq_page_flag(seq, page, locked, has_flags);
677 seq_page_flag(seq, page, error, has_flags);
678 seq_page_flag(seq, page, referenced, has_flags);
679 seq_page_flag(seq, page, uptodate, has_flags);
680 seq_page_flag(seq, page, dirty, has_flags);
681 seq_page_flag(seq, page, highmem, has_flags);
683 seq_puts(seq, "-]\n");
685 seq_puts(seq, "]\n");
688 spin_unlock(&sbi->ll_lock);
693 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
695 struct ll_async_page *llap = seq->private;
697 if (llap->llap_magic == 2)
703 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
706 struct ll_async_page *llap, *dummy_llap = seq->private;
707 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
709 /* bail if we just displayed the banner */
710 if (dummy_llap->llap_magic == 0) {
711 dummy_llap->llap_magic = 1;
715 /* we've just displayed the llap that is after us in the list.
716 * we advance to a position beyond it, returning null if there
717 * isn't another llap in the list beyond that new position. */
718 spin_lock(&sbi->ll_lock);
719 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
720 list_del_init(&dummy_llap->llap_proc_item);
722 list_add(&dummy_llap->llap_proc_item, &llap->llap_proc_item);
723 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
725 spin_unlock(&sbi->ll_lock);
729 dummy_llap->llap_magic = 2;
735 static void llite_dump_pgcache_seq_stop(struct seq_file *seq, void *v)
739 struct seq_operations llite_dump_pgcache_seq_sops = {
740 .start = llite_dump_pgcache_seq_start,
741 .stop = llite_dump_pgcache_seq_stop,
742 .next = llite_dump_pgcache_seq_next,
743 .show = llite_dump_pgcache_seq_show,
746 /* we're displaying llaps in a list_head list. we don't want to hold a lock
747 * while we walk the entire list, and we don't want to have to seek into
748 * the right position in the list as an app advances with many syscalls. we
749 * allocate a dummy llap and hang it off file->private. its position in
750 * the list records where the app is currently displaying. this way our
751 * seq .start and .stop don't actually do anything. .next returns null
752 * when the dummy hits the end of the list which eventually leads to .release
753 * where we tear down. this kind of displaying is super-racey, so we put
754 * a generation counter on the list so the output shows when the list
755 * changes between reads.
757 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
759 struct proc_dir_entry *dp = PDE(inode);
760 struct ll_async_page *llap;
761 struct seq_file *seq;
762 struct ll_sb_info *sbi = dp->data;
765 OBD_ALLOC_GFP(llap, sizeof(*llap), GFP_KERNEL);
768 llap->llap_page = NULL;
769 llap->llap_cookie = sbi;
770 llap->llap_magic = 0;
772 rc = seq_open(file, &llite_dump_pgcache_seq_sops);
774 OBD_FREE(llap, sizeof(*llap));
777 seq = file->private_data;
780 spin_lock(&sbi->ll_lock);
781 list_add(&llap->llap_proc_item, &sbi->ll_pglist);
782 spin_unlock(&sbi->ll_lock);
787 static int llite_dump_pgcache_seq_release(struct inode *inode,
790 struct seq_file *seq = file->private_data;
791 struct ll_async_page *llap = seq->private;
792 struct ll_sb_info *sbi = llap->llap_cookie;
794 spin_lock(&sbi->ll_lock);
795 if (!list_empty(&llap->llap_proc_item))
796 list_del_init(&llap->llap_proc_item);
797 spin_unlock(&sbi->ll_lock);
798 OBD_FREE(llap, sizeof(*llap));
800 return seq_release(inode, file);
803 struct file_operations llite_dump_pgcache_fops = {
804 .owner = THIS_MODULE,
805 .open = llite_dump_pgcache_seq_open,
807 .release = llite_dump_pgcache_seq_release,
809 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
812 struct ll_sb_info *sbi = seq->private;
813 struct ll_ra_info *ra = &sbi->ll_ra_info;
815 static char *ra_stat_strings[] = {
816 [RA_STAT_HIT] = "hits",
817 [RA_STAT_MISS] = "misses",
818 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
819 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
820 [RA_STAT_FAILED_MATCH] = "failed lock match",
821 [RA_STAT_DISCARDED] = "read but discarded",
822 [RA_STAT_ZERO_LEN] = "zero length file",
823 [RA_STAT_ZERO_WINDOW] = "zero size window",
824 [RA_STAT_EOF] = "read-ahead to EOF",
825 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
828 do_gettimeofday(&now);
830 spin_lock(&sbi->ll_lock);
832 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
833 now.tv_sec, now.tv_usec);
834 seq_printf(seq, "pending issued pages: %lu\n",
837 for(i = 0; i < _NR_RA_STAT; i++)
838 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
841 spin_unlock(&sbi->ll_lock);
846 static void *ll_ra_stats_seq_start(struct seq_file *p, loff_t *pos)
852 static void *ll_ra_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
857 static void ll_ra_stats_seq_stop(struct seq_file *p, void *v)
860 struct seq_operations ll_ra_stats_seq_sops = {
861 .start = ll_ra_stats_seq_start,
862 .stop = ll_ra_stats_seq_stop,
863 .next = ll_ra_stats_seq_next,
864 .show = ll_ra_stats_seq_show,
867 static int ll_ra_stats_seq_open(struct inode *inode, struct file *file)
869 struct proc_dir_entry *dp = PDE(inode);
870 struct seq_file *seq;
873 rc = seq_open(file, &ll_ra_stats_seq_sops);
876 seq = file->private_data;
877 seq->private = dp->data;
881 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
882 size_t len, loff_t *off)
884 struct seq_file *seq = file->private_data;
885 struct ll_sb_info *sbi = seq->private;
886 struct ll_ra_info *ra = &sbi->ll_ra_info;
888 spin_lock(&sbi->ll_lock);
889 memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
890 spin_unlock(&sbi->ll_lock);
895 struct file_operations ll_ra_stats_fops = {
896 .owner = THIS_MODULE,
897 .open = ll_ra_stats_seq_open,
899 .write = ll_ra_stats_seq_write,
901 .release = seq_release,
904 #define PRINTF_STIME(stime) (unsigned long)(stime)->st_num, \
905 lprocfs_stime_avg_ms(stime), lprocfs_stime_avg_us(stime)
907 static int llite_wait_times_seq_show(struct seq_file *seq, void *v)
909 struct ll_sb_info *sbi = seq->private;
912 do_gettimeofday(&now);
914 spin_lock(&sbi->ll_lock);
916 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n\n",
917 now.tv_sec, now.tv_usec);
919 seq_printf(seq, "lock wait times: (num, average ms)\n");
920 seq_printf(seq, "\tread\t%lu\t%lu.%04lu\n",
921 PRINTF_STIME(&sbi->ll_read_stime));
922 seq_printf(seq, "\twrite\t%lu\t%lu.%04lu\n",
923 PRINTF_STIME(&sbi->ll_write_stime));
924 seq_printf(seq, "\tgroup\t%lu\t%lu.%04lu\n",
925 PRINTF_STIME(&sbi->ll_grouplock_stime));
926 seq_printf(seq, "\tseek\t%lu\t%lu.%04lu\n",
927 PRINTF_STIME(&sbi->ll_seek_stime));
928 seq_printf(seq, "\tsetattr\t%lu\t%lu.%04lu\n\n",
929 PRINTF_STIME(&sbi->ll_setattr_stime));
931 seq_printf(seq, "io path wait times: (num, average ms)\n");
932 seq_printf(seq, "\tll_brw\t%lu\t%lu.%04lu\n",
933 PRINTF_STIME(&sbi->ll_brw_stime));
935 seq_printf(seq, "\tdone\t%lu\t%lu.%04lu\n",
936 PRINTF_STIME(&sbi->ll_done_stime));
939 spin_unlock(&sbi->ll_lock);
945 static void *llite_wait_times_seq_start(struct seq_file *p, loff_t *pos)
951 static void *llite_wait_times_seq_next(struct seq_file *p, void *v, loff_t *pos)
956 static void llite_wait_times_seq_stop(struct seq_file *p, void *v)
959 struct seq_operations llite_wait_times_seq_sops = {
960 .start = llite_wait_times_seq_start,
961 .stop = llite_wait_times_seq_stop,
962 .next = llite_wait_times_seq_next,
963 .show = llite_wait_times_seq_show,
966 static int llite_wait_times_seq_open(struct inode *inode, struct file *file)
968 struct proc_dir_entry *dp = PDE(inode);
969 struct seq_file *seq;
972 rc = seq_open(file, &llite_wait_times_seq_sops);
975 seq = file->private_data;
976 seq->private = dp->data;
980 static ssize_t llite_wait_times_seq_write(struct file *file, const char *buf,
981 size_t len, loff_t *off)
983 struct seq_file *seq = file->private_data;
984 struct ll_sb_info *sbi = seq->private;
986 spin_lock(&sbi->ll_lock);
987 memset(&sbi->ll_read_stime, 0, sizeof(sbi->ll_read_stime));
988 memset(&sbi->ll_write_stime, 0, sizeof(sbi->ll_write_stime));
989 memset(&sbi->ll_grouplock_stime, 0, sizeof(sbi->ll_grouplock_stime));
990 memset(&sbi->ll_seek_stime, 0, sizeof(sbi->ll_seek_stime));
991 memset(&sbi->ll_setattr_stime, 0, sizeof(sbi->ll_setattr_stime));
992 memset(&sbi->ll_brw_stime, 0, sizeof(sbi->ll_brw_stime));
993 // memset(&sbi->ll_done_stime, 0, sizeof(sbi->ll_done_stime));
994 spin_unlock(&sbi->ll_lock);
999 struct file_operations llite_wait_times_fops = {
1000 .owner = THIS_MODULE,
1001 .open = llite_wait_times_seq_open,
1003 .write = llite_wait_times_seq_write,
1004 .llseek = seq_lseek,
1005 .release = seq_release,
1008 #endif /* LPROCFS */