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 /* checking for setting "." and ".." as object name */
316 if (buffer[0] == '.') switch (count) {
318 /* this is "." case with terminating zero */
321 /* this is ".." case with terminating zero */
322 if (buffer[1] == '.')
326 down(&sbi->ll_gns_sem);
327 snprintf(sbi->ll_gns_oname, count, "%s", buffer);
328 up(&sbi->ll_gns_sem);
333 static int ll_rd_gns_timeout(char *page, char **start, off_t off,
334 int count, int *eof, void *data)
336 struct super_block *sb = (struct super_block *)data;
337 struct ll_sb_info *sbi = ll_s2sbi(sb);
340 down(&sbi->ll_gns_sem);
341 len = snprintf(page, count, "%lu\n",
342 (unsigned long)sbi->ll_gns_timeout);
343 up(&sbi->ll_gns_sem);
348 static int ll_wr_gns_timeout(struct file *file, const char *buffer,
349 unsigned long count, void *data)
351 struct super_block *sb = (struct super_block *)data;
352 struct ll_sb_info *sbi = ll_s2sbi(sb);
355 rc = lprocfs_write_helper(buffer, count, &val);
359 down(&sbi->ll_gns_sem);
360 sbi->ll_gns_timeout = val;
361 up(&sbi->ll_gns_sem);
366 static int ll_rd_gns_tick(char *page, char **start, off_t off,
367 int count, int *eof, void *data)
369 struct super_block *sb = (struct super_block *)data;
370 struct ll_sb_info *sbi = ll_s2sbi(sb);
373 down(&sbi->ll_gns_sem);
374 len = snprintf(page, count, "%lu\n",
375 (unsigned long)sbi->ll_gns_tick);
376 up(&sbi->ll_gns_sem);
381 static int ll_wr_gns_tick(struct file *file, const char *buffer,
382 unsigned long count, void *data)
384 struct super_block *sb = (struct super_block *)data;
385 struct ll_sb_info *sbi = ll_s2sbi(sb);
388 rc = lprocfs_write_helper(buffer, count, &val);
392 down(&sbi->ll_gns_sem);
393 if (sbi->ll_gns_tick < sbi->ll_gns_timeout)
394 sbi->ll_gns_tick = val;
395 up(&sbi->ll_gns_sem);
399 static struct lprocfs_vars lprocfs_obd_vars[] = {
400 { "uuid", ll_rd_sb_uuid, 0, 0 },
401 //{ "mntpt_path", ll_rd_path, 0, 0 },
402 { "fstype", ll_rd_fstype, 0, 0 },
403 { "blocksize", ll_rd_blksize, 0, 0 },
404 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
405 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
406 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
407 { "filestotal", ll_rd_filestotal, 0, 0 },
408 { "filesfree", ll_rd_filesfree, 0, 0 },
409 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
410 { "read_ahead", ll_rd_read_ahead, ll_wr_read_ahead, 0 },
411 { "config_update", 0, ll_wr_config_update, 0 },
412 { "max_read_ahead_mb", ll_rd_max_read_ahead_mb,
413 ll_wr_max_read_ahead_mb, 0 },
415 { "gns_upcall", ll_rd_gns_upcall,
416 ll_wr_gns_upcall, 0 },
418 { "gns_timeout", ll_rd_gns_timeout,
419 ll_wr_gns_timeout, 0 },
421 { "gns_tick", ll_rd_gns_tick,
424 { "gns_object_name", ll_rd_gns_object_name,
425 ll_wr_gns_object_name, 0 },
430 #define MAX_STRING_SIZE 128
432 struct llite_file_opcode {
436 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
438 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
439 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
440 { LPROC_LL_WB_WRITEPAGE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
441 "writeback_from_writepage" },
442 { LPROC_LL_WB_PRESSURE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
443 "writeback_from_pressure" },
444 { LPROC_LL_WB_OK, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
445 "writeback_ok_pages" },
446 { LPROC_LL_WB_FAIL, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
447 "writeback_failed_pages" },
448 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
450 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
452 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
454 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
457 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
458 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
459 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
460 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
461 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
462 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
463 /* inode operation */
464 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
465 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "punch" },
466 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
467 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
469 { LPROC_LL_REVALIDATE, LPROCFS_TYPE_REGS, "getattr" },
471 /* special inode operation */
472 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
473 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
474 { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
476 { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
478 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
479 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
482 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
483 struct super_block *sb, char *osc, char *mdc)
485 struct lprocfs_vars lvars[2];
486 struct ll_sb_info *sbi = ll_s2sbi(sb);
487 struct obd_device *obd;
488 char name[MAX_STRING_SIZE + 1];
490 struct lprocfs_stats *svc_stats = NULL;
491 struct proc_dir_entry *mdc_symlink, *osc_symlink;
492 struct proc_dir_entry *entry;
495 memset(lvars, 0, sizeof(lvars));
497 name[MAX_STRING_SIZE] = '\0';
498 lvars[0].name = name;
500 LASSERT(sbi != NULL);
501 LASSERT(mdc != NULL);
502 LASSERT(osc != NULL);
505 snprintf(name, MAX_STRING_SIZE, "fs%llu", mnt_instance);
508 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
509 if (IS_ERR(sbi->ll_proc_root)) {
510 err = PTR_ERR(sbi->ll_proc_root);
511 sbi->ll_proc_root = NULL;
515 entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root);
517 GOTO(out, err = -ENOMEM);
518 entry->proc_fops = &llite_dump_pgcache_fops;
521 entry = create_proc_entry("wait_times", 0444, sbi->ll_proc_root);
523 GOTO(out, err = -ENOMEM);
524 entry->proc_fops = &llite_wait_times_fops;
527 entry = create_proc_entry("read_ahead_stats", 0444, sbi->ll_proc_root);
529 GOTO(out, err = -ENOMEM);
530 entry->proc_fops = &ll_ra_stats_fops;
533 svc_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES);
534 if (svc_stats == NULL) {
538 /* do counter init */
539 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
540 __u32 type = llite_opcode_table[id].type;
542 if (type & LPROCFS_TYPE_REGS)
545 if (type & LPROCFS_TYPE_BYTES)
548 if (type & LPROCFS_TYPE_PAGES)
552 lprocfs_counter_init(svc_stats, llite_opcode_table[id].opcode,
553 (type & LPROCFS_CNTR_AVGMINMAX),
554 llite_opcode_table[id].opname, ptr);
556 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", svc_stats);
560 sbi->ll_stats = svc_stats;
561 /* need place to keep svc_stats */
563 /* Static configuration info */
564 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_obd_vars, sb);
569 obd = class_name2obd(mdc);
571 LASSERT(obd != NULL);
572 LASSERT(obd->obd_type != NULL);
573 LASSERT(obd->obd_type->typ_name != NULL);
575 snprintf(name, MAX_STRING_SIZE, "../../%s/%s",
576 obd->obd_type->typ_name, obd->obd_name);
577 mdc_symlink = proc_symlink(obd->obd_type->typ_name, sbi->ll_proc_root,
579 if (mdc_symlink == NULL) {
585 obd = class_name2obd(osc);
587 LASSERT(obd != NULL);
588 LASSERT(obd->obd_type != NULL);
589 LASSERT(obd->obd_type->typ_name != NULL);
591 snprintf(name, MAX_STRING_SIZE, "../../%s/%s",
592 obd->obd_type->typ_name, obd->obd_name);
593 osc_symlink = proc_symlink(obd->obd_type->typ_name, sbi->ll_proc_root,
595 if (osc_symlink == NULL)
602 lprocfs_free_stats(svc_stats);
603 if (sbi->ll_proc_root)
604 lprocfs_remove(sbi->ll_proc_root);
609 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
611 if (sbi->ll_proc_root) {
612 struct proc_dir_entry *file_stats =
613 lprocfs_srch(sbi->ll_proc_root, "stats");
616 lprocfs_free_stats(sbi->ll_stats);
617 lprocfs_remove(file_stats);
621 #undef MAX_STRING_SIZE
623 static struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi,
624 struct list_head *list)
626 struct ll_async_page *llap;
627 struct list_head *pos;
629 list_for_each(pos, list) {
630 if (pos == &sbi->ll_pglist)
632 llap = list_entry(pos, struct ll_async_page, llap_proc_item);
633 if (llap->llap_page == NULL)
641 #define seq_page_flag(seq, page, flag, has_flags) do { \
642 if (test_bit(PG_##flag, &(page)->flags)) { \
646 seq_putc(seq, '|'); \
647 seq_puts(seq, #flag); \
651 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
653 struct ll_async_page *llap, *dummy_llap = seq->private;
654 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
656 /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
657 * it in our own state */
658 if (dummy_llap->llap_magic == 0) {
659 seq_printf(seq, "generation | llap cookie origin | page ");
660 seq_printf(seq, "inode index count [ page flags ]\n");
664 spin_lock(&sbi->ll_lock);
666 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
669 struct page *page = llap->llap_page;
670 static char *origins[] = {
671 [LLAP_ORIGIN_UNKNOWN] = "--",
672 [LLAP_ORIGIN_READPAGE] = "rp",
673 [LLAP_ORIGIN_READAHEAD] = "ra",
674 [LLAP_ORIGIN_COMMIT_WRITE] = "cw",
675 [LLAP_ORIGIN_WRITEPAGE] = "wp",
678 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
681 seq_printf(seq, "%lu | %p %p %s | %p %p %lu %u [",
683 llap, llap->llap_cookie,
684 origins[llap->llap_origin],
685 page, page->mapping->host, page->index,
687 seq_page_flag(seq, page, locked, has_flags);
688 seq_page_flag(seq, page, error, has_flags);
689 seq_page_flag(seq, page, referenced, has_flags);
690 seq_page_flag(seq, page, uptodate, has_flags);
691 seq_page_flag(seq, page, dirty, has_flags);
692 seq_page_flag(seq, page, highmem, has_flags);
694 seq_puts(seq, "-]\n");
696 seq_puts(seq, "]\n");
699 spin_unlock(&sbi->ll_lock);
704 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
706 struct ll_async_page *llap = seq->private;
708 if (llap->llap_magic == 2)
714 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
717 struct ll_async_page *llap, *dummy_llap = seq->private;
718 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
720 /* bail if we just displayed the banner */
721 if (dummy_llap->llap_magic == 0) {
722 dummy_llap->llap_magic = 1;
726 /* we've just displayed the llap that is after us in the list.
727 * we advance to a position beyond it, returning null if there
728 * isn't another llap in the list beyond that new position. */
729 spin_lock(&sbi->ll_lock);
730 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
731 list_del_init(&dummy_llap->llap_proc_item);
733 list_add(&dummy_llap->llap_proc_item, &llap->llap_proc_item);
734 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
736 spin_unlock(&sbi->ll_lock);
740 dummy_llap->llap_magic = 2;
746 static void llite_dump_pgcache_seq_stop(struct seq_file *seq, void *v)
750 struct seq_operations llite_dump_pgcache_seq_sops = {
751 .start = llite_dump_pgcache_seq_start,
752 .stop = llite_dump_pgcache_seq_stop,
753 .next = llite_dump_pgcache_seq_next,
754 .show = llite_dump_pgcache_seq_show,
757 /* we're displaying llaps in a list_head list. we don't want to hold a lock
758 * while we walk the entire list, and we don't want to have to seek into
759 * the right position in the list as an app advances with many syscalls. we
760 * allocate a dummy llap and hang it off file->private. its position in
761 * the list records where the app is currently displaying. this way our
762 * seq .start and .stop don't actually do anything. .next returns null
763 * when the dummy hits the end of the list which eventually leads to .release
764 * where we tear down. this kind of displaying is super-racey, so we put
765 * a generation counter on the list so the output shows when the list
766 * changes between reads.
768 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
770 struct proc_dir_entry *dp = PDE(inode);
771 struct ll_async_page *llap;
772 struct seq_file *seq;
773 struct ll_sb_info *sbi = dp->data;
776 OBD_ALLOC_GFP(llap, sizeof(*llap), GFP_KERNEL);
779 llap->llap_page = NULL;
780 llap->llap_cookie = sbi;
781 llap->llap_magic = 0;
783 rc = seq_open(file, &llite_dump_pgcache_seq_sops);
785 OBD_FREE(llap, sizeof(*llap));
788 seq = file->private_data;
791 spin_lock(&sbi->ll_lock);
792 list_add(&llap->llap_proc_item, &sbi->ll_pglist);
793 spin_unlock(&sbi->ll_lock);
798 static int llite_dump_pgcache_seq_release(struct inode *inode,
801 struct seq_file *seq = file->private_data;
802 struct ll_async_page *llap = seq->private;
803 struct ll_sb_info *sbi = llap->llap_cookie;
805 spin_lock(&sbi->ll_lock);
806 if (!list_empty(&llap->llap_proc_item))
807 list_del_init(&llap->llap_proc_item);
808 spin_unlock(&sbi->ll_lock);
809 OBD_FREE(llap, sizeof(*llap));
811 return seq_release(inode, file);
814 struct file_operations llite_dump_pgcache_fops = {
815 .owner = THIS_MODULE,
816 .open = llite_dump_pgcache_seq_open,
818 .release = llite_dump_pgcache_seq_release,
820 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
823 struct ll_sb_info *sbi = seq->private;
824 struct ll_ra_info *ra = &sbi->ll_ra_info;
826 static char *ra_stat_strings[] = {
827 [RA_STAT_HIT] = "hits",
828 [RA_STAT_MISS] = "misses",
829 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
830 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
831 [RA_STAT_FAILED_MATCH] = "failed lock match",
832 [RA_STAT_DISCARDED] = "read but discarded",
833 [RA_STAT_ZERO_LEN] = "zero length file",
834 [RA_STAT_ZERO_WINDOW] = "zero size window",
835 [RA_STAT_EOF] = "read-ahead to EOF",
836 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
839 do_gettimeofday(&now);
841 spin_lock(&sbi->ll_lock);
843 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
844 now.tv_sec, now.tv_usec);
845 seq_printf(seq, "pending issued pages: %lu\n",
848 for(i = 0; i < _NR_RA_STAT; i++)
849 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
852 spin_unlock(&sbi->ll_lock);
857 static void *ll_ra_stats_seq_start(struct seq_file *p, loff_t *pos)
863 static void *ll_ra_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
868 static void ll_ra_stats_seq_stop(struct seq_file *p, void *v)
871 struct seq_operations ll_ra_stats_seq_sops = {
872 .start = ll_ra_stats_seq_start,
873 .stop = ll_ra_stats_seq_stop,
874 .next = ll_ra_stats_seq_next,
875 .show = ll_ra_stats_seq_show,
878 static int ll_ra_stats_seq_open(struct inode *inode, struct file *file)
880 struct proc_dir_entry *dp = PDE(inode);
881 struct seq_file *seq;
884 rc = seq_open(file, &ll_ra_stats_seq_sops);
887 seq = file->private_data;
888 seq->private = dp->data;
892 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
893 size_t len, loff_t *off)
895 struct seq_file *seq = file->private_data;
896 struct ll_sb_info *sbi = seq->private;
897 struct ll_ra_info *ra = &sbi->ll_ra_info;
899 spin_lock(&sbi->ll_lock);
900 memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
901 spin_unlock(&sbi->ll_lock);
906 struct file_operations ll_ra_stats_fops = {
907 .owner = THIS_MODULE,
908 .open = ll_ra_stats_seq_open,
910 .write = ll_ra_stats_seq_write,
912 .release = seq_release,
915 #define PRINTF_STIME(stime) (unsigned long)(stime)->st_num, \
916 lprocfs_stime_avg_ms(stime), lprocfs_stime_avg_us(stime)
918 static int llite_wait_times_seq_show(struct seq_file *seq, void *v)
920 struct ll_sb_info *sbi = seq->private;
923 do_gettimeofday(&now);
925 spin_lock(&sbi->ll_lock);
927 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n\n",
928 now.tv_sec, now.tv_usec);
930 seq_printf(seq, "lock wait times: (num, average ms)\n");
931 seq_printf(seq, "\tread\t%lu\t%lu.%04lu\n",
932 PRINTF_STIME(&sbi->ll_read_stime));
933 seq_printf(seq, "\twrite\t%lu\t%lu.%04lu\n",
934 PRINTF_STIME(&sbi->ll_write_stime));
935 seq_printf(seq, "\tgroup\t%lu\t%lu.%04lu\n",
936 PRINTF_STIME(&sbi->ll_grouplock_stime));
937 seq_printf(seq, "\tseek\t%lu\t%lu.%04lu\n",
938 PRINTF_STIME(&sbi->ll_seek_stime));
939 seq_printf(seq, "\tsetattr\t%lu\t%lu.%04lu\n\n",
940 PRINTF_STIME(&sbi->ll_setattr_stime));
942 seq_printf(seq, "io path wait times: (num, average ms)\n");
943 seq_printf(seq, "\tll_brw\t%lu\t%lu.%04lu\n",
944 PRINTF_STIME(&sbi->ll_brw_stime));
946 seq_printf(seq, "\tdone\t%lu\t%lu.%04lu\n",
947 PRINTF_STIME(&sbi->ll_done_stime));
950 spin_unlock(&sbi->ll_lock);
956 static void *llite_wait_times_seq_start(struct seq_file *p, loff_t *pos)
962 static void *llite_wait_times_seq_next(struct seq_file *p, void *v, loff_t *pos)
967 static void llite_wait_times_seq_stop(struct seq_file *p, void *v)
970 struct seq_operations llite_wait_times_seq_sops = {
971 .start = llite_wait_times_seq_start,
972 .stop = llite_wait_times_seq_stop,
973 .next = llite_wait_times_seq_next,
974 .show = llite_wait_times_seq_show,
977 static int llite_wait_times_seq_open(struct inode *inode, struct file *file)
979 struct proc_dir_entry *dp = PDE(inode);
980 struct seq_file *seq;
983 rc = seq_open(file, &llite_wait_times_seq_sops);
986 seq = file->private_data;
987 seq->private = dp->data;
991 static ssize_t llite_wait_times_seq_write(struct file *file, const char *buf,
992 size_t len, loff_t *off)
994 struct seq_file *seq = file->private_data;
995 struct ll_sb_info *sbi = seq->private;
997 spin_lock(&sbi->ll_lock);
998 memset(&sbi->ll_read_stime, 0, sizeof(sbi->ll_read_stime));
999 memset(&sbi->ll_write_stime, 0, sizeof(sbi->ll_write_stime));
1000 memset(&sbi->ll_grouplock_stime, 0, sizeof(sbi->ll_grouplock_stime));
1001 memset(&sbi->ll_seek_stime, 0, sizeof(sbi->ll_seek_stime));
1002 memset(&sbi->ll_setattr_stime, 0, sizeof(sbi->ll_setattr_stime));
1003 memset(&sbi->ll_brw_stime, 0, sizeof(sbi->ll_brw_stime));
1004 // memset(&sbi->ll_done_stime, 0, sizeof(sbi->ll_done_stime));
1005 spin_unlock(&sbi->ll_lock);
1010 struct file_operations llite_wait_times_fops = {
1011 .owner = THIS_MODULE,
1012 .open = llite_wait_times_seq_open,
1014 .write = llite_wait_times_seq_write,
1015 .llseek = seq_lseek,
1016 .release = seq_release,
1019 #endif /* LPROCFS */