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 <lustre_lite.h>
26 #include <lprocfs_status.h>
27 #include <linux/seq_file.h>
28 #include <obd_support.h>
30 #include "llite_internal.h"
32 struct proc_dir_entry *proc_lustre_fs_root;
35 /* /proc/lustre/llite mount point registration */
36 struct file_operations llite_dump_pgcache_fops;
37 struct file_operations ll_ra_stats_fops;
38 struct file_operations ll_rw_extents_stats_fops;
39 struct file_operations ll_rw_extents_stats_pp_fops;
40 struct file_operations ll_rw_offset_stats_fops;
42 static int ll_rd_blksize(char *page, char **start, off_t off, int count,
45 struct super_block *sb = (struct super_block *)data;
46 struct obd_statfs osfs;
50 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
53 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
59 static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count,
62 struct super_block *sb = (struct super_block *)data;
63 struct obd_statfs osfs;
67 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
69 __u32 blk_size = osfs.os_bsize >> 10;
70 __u64 result = osfs.os_blocks;
72 while (blk_size >>= 1)
76 rc = snprintf(page, count, LPU64"\n", result);
82 static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count,
85 struct super_block *sb = (struct super_block *)data;
86 struct obd_statfs osfs;
90 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
92 __u32 blk_size = osfs.os_bsize >> 10;
93 __u64 result = osfs.os_bfree;
95 while (blk_size >>= 1)
99 rc = snprintf(page, count, LPU64"\n", result);
104 static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count,
105 int *eof, void *data)
107 struct super_block *sb = (struct super_block *)data;
108 struct obd_statfs osfs;
112 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
114 __u32 blk_size = osfs.os_bsize >> 10;
115 __u64 result = osfs.os_bavail;
117 while (blk_size >>= 1)
121 rc = snprintf(page, count, LPU64"\n", result);
126 static int ll_rd_filestotal(char *page, char **start, off_t off, int count,
127 int *eof, void *data)
129 struct super_block *sb = (struct super_block *)data;
130 struct obd_statfs osfs;
134 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
137 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
142 static int ll_rd_filesfree(char *page, char **start, off_t off, int count,
143 int *eof, void *data)
145 struct super_block *sb = (struct super_block *)data;
146 struct obd_statfs osfs;
150 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
153 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
159 static int ll_rd_client_type(char *page, char **start, off_t off, int count,
160 int *eof, void *data)
162 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)data);
165 LASSERT(sbi != NULL);
168 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
169 rc = snprintf(page, count, "remote client\n");
171 rc = snprintf(page, count, "local client\n");
176 static int ll_rd_fstype(char *page, char **start, off_t off, int count,
177 int *eof, void *data)
179 struct super_block *sb = (struct super_block*)data;
183 return snprintf(page, count, "%s\n", sb->s_type->name);
186 static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count,
187 int *eof, void *data)
189 struct super_block *sb = (struct super_block *)data;
193 return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
196 static int ll_rd_max_readahead_mb(char *page, char **start, off_t off,
197 int count, int *eof, void *data)
199 struct super_block *sb = data;
200 struct ll_sb_info *sbi = ll_s2sbi(sb);
204 spin_lock(&sbi->ll_lock);
205 pages_number = sbi->ll_ra_info.ra_max_pages;
206 spin_unlock(&sbi->ll_lock);
208 mult = 1 << (20 - PAGE_CACHE_SHIFT);
209 return lprocfs_read_frac_helper(page, count, pages_number, mult);
212 static int ll_wr_max_readahead_mb(struct file *file, const char *buffer,
213 unsigned long count, void *data)
215 struct super_block *sb = data;
216 struct ll_sb_info *sbi = ll_s2sbi(sb);
217 int mult, rc, pages_number;
219 mult = 1 << (20 - CFS_PAGE_SHIFT);
220 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
224 if (pages_number < 0 || pages_number > num_physpages / 2) {
225 CERROR("can't set file readahead more than %lu MB\n",
226 num_physpages >> (20 - CFS_PAGE_SHIFT + 1)); /*1/2 of RAM*/
230 spin_lock(&sbi->ll_lock);
231 sbi->ll_ra_info.ra_max_pages = pages_number;
232 spin_unlock(&sbi->ll_lock);
237 static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off,
238 int count, int *eof, void *data)
240 struct super_block *sb = data;
241 struct ll_sb_info *sbi = ll_s2sbi(sb);
245 spin_lock(&sbi->ll_lock);
246 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
247 spin_unlock(&sbi->ll_lock);
249 mult = 1 << (20 - CFS_PAGE_SHIFT);
250 return lprocfs_read_frac_helper(page, count, pages_number, mult);
253 static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer,
254 unsigned long count, void *data)
256 struct super_block *sb = data;
257 struct ll_sb_info *sbi = ll_s2sbi(sb);
258 int mult, rc, pages_number;
260 mult = 1 << (20 - CFS_PAGE_SHIFT);
261 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
265 /* Cap this at the current max readahead window size, the readahead
266 * algorithm does this anyway so it's pointless to set it larger. */
267 if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
268 CERROR("can't set max_read_ahead_whole_mb more than "
269 "max_read_ahead_mb: %lu\n",
270 sbi->ll_ra_info.ra_max_pages >> (20 - CFS_PAGE_SHIFT));
274 spin_lock(&sbi->ll_lock);
275 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
276 spin_unlock(&sbi->ll_lock);
281 static int ll_rd_max_cached_mb(char *page, char **start, off_t off,
282 int count, int *eof, void *data)
284 struct super_block *sb = data;
285 struct ll_sb_info *sbi = ll_s2sbi(sb);
289 spin_lock(&sbi->ll_lock);
290 pages_number = sbi->ll_async_page_max;
291 spin_unlock(&sbi->ll_lock);
293 mult = 1 << (20 - CFS_PAGE_SHIFT);
294 return lprocfs_read_frac_helper(page, count, pages_number, mult);;
297 static int ll_wr_max_cached_mb(struct file *file, const char *buffer,
298 unsigned long count, void *data)
300 struct super_block *sb = data;
301 struct ll_sb_info *sbi = ll_s2sbi(sb);
302 int mult, rc, pages_number;
304 mult = 1 << (20 - CFS_PAGE_SHIFT);
305 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
309 if (pages_number < 0 || pages_number > num_physpages) {
310 CERROR("can't set max cache more than %lu MB\n",
311 num_physpages >> (20 - CFS_PAGE_SHIFT));
315 spin_lock(&sbi->ll_lock);
316 sbi->ll_async_page_max = pages_number ;
317 spin_unlock(&sbi->ll_lock);
320 /* Not set up yet, don't call llap_shrink_cache */
323 if (sbi->ll_async_page_count >= sbi->ll_async_page_max)
324 llap_shrink_cache(sbi, 0);
329 static int ll_rd_checksum(char *page, char **start, off_t off,
330 int count, int *eof, void *data)
332 struct super_block *sb = data;
333 struct ll_sb_info *sbi = ll_s2sbi(sb);
335 return snprintf(page, count, "%u\n",
336 (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
339 static int ll_wr_checksum(struct file *file, const char *buffer,
340 unsigned long count, void *data)
342 struct super_block *sb = data;
343 struct ll_sb_info *sbi = ll_s2sbi(sb);
350 rc = lprocfs_write_helper(buffer, count, &val);
354 sbi->ll_flags |= LL_SBI_CHECKSUM;
356 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
358 rc = obd_set_info_async(sbi->ll_dt_exp, strlen("checksum"), "checksum",
359 sizeof(val), &val, NULL);
361 CWARN("Failed to set OSC checksum flags: %d\n", rc);
366 static int ll_rd_max_rw_chunk(char *page, char **start, off_t off,
367 int count, int *eof, void *data)
369 struct super_block *sb = data;
371 return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
374 static int ll_wr_max_rw_chunk(struct file *file, const char *buffer,
375 unsigned long count, void *data)
377 struct super_block *sb = data;
380 rc = lprocfs_write_helper(buffer, count, &val);
383 ll_s2sbi(sb)->ll_max_rw_chunk = val;
387 static int ll_rd_track_id(char *page, int count, void *data,
388 enum stats_track_type type)
390 struct super_block *sb = data;
392 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
393 return snprintf(page, count, "%d\n",
394 ll_s2sbi(sb)->ll_stats_track_id);
396 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
397 return snprintf(page, count, "0 (all)\n");
399 return snprintf(page, count, "untracked\n");
403 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
404 enum stats_track_type type)
406 struct super_block *sb = data;
409 rc = lprocfs_write_helper(buffer, count, &pid);
412 ll_s2sbi(sb)->ll_stats_track_id = pid;
414 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
416 ll_s2sbi(sb)->ll_stats_track_type = type;
417 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
421 static int ll_rd_track_pid(char *page, char **start, off_t off,
422 int count, int *eof, void *data)
424 return (ll_rd_track_id(page, count, data, STATS_TRACK_PID));
427 static int ll_wr_track_pid(struct file *file, const char *buffer,
428 unsigned long count, void *data)
430 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID));
433 static int ll_rd_track_ppid(char *page, char **start, off_t off,
434 int count, int *eof, void *data)
436 return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID));
439 static int ll_wr_track_ppid(struct file *file, const char *buffer,
440 unsigned long count, void *data)
442 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID));
445 static int ll_rd_track_gid(char *page, char **start, off_t off,
446 int count, int *eof, void *data)
448 return (ll_rd_track_id(page, count, data, STATS_TRACK_GID));
451 static int ll_wr_track_gid(struct file *file, const char *buffer,
452 unsigned long count, void *data)
454 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID));
457 static struct lprocfs_vars lprocfs_obd_vars[] = {
458 { "uuid", ll_rd_sb_uuid, 0, 0 },
459 //{ "mntpt_path", ll_rd_path, 0, 0 },
460 { "fstype", ll_rd_fstype, 0, 0 },
461 { "blocksize", ll_rd_blksize, 0, 0 },
462 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
463 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
464 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
465 { "filestotal", ll_rd_filestotal, 0, 0 },
466 { "filesfree", ll_rd_filesfree, 0, 0 },
467 { "client_type", ll_rd_client_type, 0, 0 },
468 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
469 { "max_read_ahead_mb", ll_rd_max_readahead_mb,
470 ll_wr_max_readahead_mb, 0 },
471 { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb,
472 ll_wr_max_read_ahead_whole_mb, 0 },
473 { "max_cached_mb", ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 },
474 { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 },
475 { "max_rw_chunk", ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 },
476 { "stats_track_pid", ll_rd_track_pid, ll_wr_track_pid, 0 },
477 { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 },
478 { "stats_track_gid", ll_rd_track_gid, ll_wr_track_gid, 0 },
482 #define MAX_STRING_SIZE 128
484 struct llite_file_opcode {
488 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
490 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
491 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
492 { LPROC_LL_WB_WRITEPAGE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
493 "writeback_from_writepage" },
494 { LPROC_LL_WB_PRESSURE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
495 "writeback_from_pressure" },
496 { LPROC_LL_WB_OK, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
497 "writeback_ok_pages" },
498 { LPROC_LL_WB_FAIL, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
499 "writeback_failed_pages" },
500 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
502 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
504 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
506 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
509 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
510 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
511 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
512 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
513 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
514 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
515 /* inode operation */
516 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
517 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
518 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
519 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
520 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
522 { LPROC_LL_REVALIDATE, LPROCFS_TYPE_REGS, "getattr" },
524 /* special inode operation */
525 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
526 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
527 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
528 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
529 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
530 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
531 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
532 { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
534 { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
539 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
543 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
544 lprocfs_counter_add(sbi->ll_stats, op, count);
545 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
546 sbi->ll_stats_track_id == current->pid)
547 lprocfs_counter_add(sbi->ll_stats, op, count);
548 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
549 sbi->ll_stats_track_id == current->p_pptr->pid)
550 lprocfs_counter_add(sbi->ll_stats, op, count);
551 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
552 sbi->ll_stats_track_id == current->gid)
553 lprocfs_counter_add(sbi->ll_stats, op, count);
555 EXPORT_SYMBOL(ll_stats_ops_tally);
557 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
558 struct super_block *sb, char *osc, char *mdc)
560 struct lprocfs_vars lvars[2];
561 struct lustre_sb_info *lsi = s2lsi(sb);
562 struct ll_sb_info *sbi = ll_s2sbi(sb);
563 struct obd_device *obd;
564 char name[MAX_STRING_SIZE + 1], *ptr;
566 struct proc_dir_entry *entry;
569 memset(lvars, 0, sizeof(lvars));
571 name[MAX_STRING_SIZE] = '\0';
572 lvars[0].name = name;
574 LASSERT(sbi != NULL);
575 LASSERT(mdc != NULL);
576 LASSERT(osc != NULL);
579 len = strlen(lsi->lsi_lmd->lmd_profile);
580 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
581 if (ptr && (strcmp(ptr, "-client") == 0))
585 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
586 lsi->lsi_lmd->lmd_profile, sb);
588 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
589 if (IS_ERR(sbi->ll_proc_root)) {
590 err = PTR_ERR(sbi->ll_proc_root);
591 sbi->ll_proc_root = NULL;
595 entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root);
597 GOTO(out, err = -ENOMEM);
598 entry->proc_fops = &llite_dump_pgcache_fops;
601 entry = create_proc_entry("read_ahead_stats", 0644, sbi->ll_proc_root);
603 GOTO(out, err = -ENOMEM);
604 entry->proc_fops = &ll_ra_stats_fops;
607 entry = create_proc_entry("extents_stats", 0644, sbi->ll_proc_root);
609 GOTO(out, err = -ENOMEM);
610 entry->proc_fops = &ll_rw_extents_stats_fops;
613 entry = create_proc_entry("extents_stats_per_process", 0644,
616 GOTO(out, err = -ENOMEM);
617 entry->proc_fops = &ll_rw_extents_stats_pp_fops;
620 entry = create_proc_entry("offset_stats", 0644, sbi->ll_proc_root);
622 GOTO(out, err = -ENOMEM);
623 entry->proc_fops = &ll_rw_offset_stats_fops;
626 /* File operations stats */
627 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES, 0);
628 if (sbi->ll_stats == NULL)
629 GOTO(out, err = -ENOMEM);
630 /* do counter init */
631 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
632 __u32 type = llite_opcode_table[id].type;
634 if (type & LPROCFS_TYPE_REGS)
637 if (type & LPROCFS_TYPE_BYTES)
640 if (type & LPROCFS_TYPE_PAGES)
644 lprocfs_counter_init(sbi->ll_stats,
645 llite_opcode_table[id].opcode,
646 (type & LPROCFS_CNTR_AVGMINMAX),
647 llite_opcode_table[id].opname, ptr);
649 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
653 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_obd_vars, sb);
658 obd = class_name2obd(mdc);
660 LASSERT(obd != NULL);
661 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
662 LASSERT(obd->obd_type->typ_name != NULL);
664 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
665 obd->obd_type->typ_name);
666 lvars[0].read_fptr = lprocfs_rd_name;
667 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
671 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
672 lvars[0].read_fptr = lprocfs_rd_uuid;
673 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
678 obd = class_name2obd(osc);
680 LASSERT(obd != NULL);
681 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
682 LASSERT(obd->obd_type->typ_name != NULL);
684 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
685 obd->obd_type->typ_name);
686 lvars[0].read_fptr = lprocfs_rd_name;
687 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
691 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
692 lvars[0].read_fptr = lprocfs_rd_uuid;
693 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
696 lprocfs_remove(&sbi->ll_proc_root);
697 lprocfs_free_stats(&sbi->ll_stats);
702 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
704 if (sbi->ll_proc_root) {
705 lprocfs_remove(&sbi->ll_proc_root);
706 lprocfs_free_stats(&sbi->ll_stats);
709 #undef MAX_STRING_SIZE
711 #define seq_page_flag(seq, page, flag, has_flags) do { \
712 if (test_bit(PG_##flag, &(page)->flags)) { \
716 seq_putc(seq, '|'); \
717 seq_puts(seq, #flag); \
721 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
723 struct ll_async_page *dummy_llap = seq->private;
725 if (dummy_llap->llap_magic == 2)
731 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
733 struct ll_async_page *llap, *dummy_llap = seq->private;
734 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
736 /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
737 * it in our own state */
738 if (dummy_llap->llap_magic == 0) {
739 seq_printf(seq, "gener | llap cookie origin wq du wb | page "
740 "inode index count [ page flags ]\n");
744 spin_lock(&sbi->ll_lock);
746 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
749 struct page *page = llap->llap_page;
751 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
754 seq_printf(seq," %5lu | %p %p %s %s %s %s | %p %lu/%u(%p) "
757 llap, llap->llap_cookie,
758 llap_origins[llap->llap_origin],
759 llap->llap_write_queued ? "wq" : "- ",
760 llap->llap_defer_uptodate ? "du" : "- ",
761 PageWriteback(page) ? "wb" : "-",
762 page, page->mapping->host->i_ino,
763 page->mapping->host->i_generation,
764 page->mapping->host, page->index,
766 seq_page_flag(seq, page, locked, has_flags);
767 seq_page_flag(seq, page, error, has_flags);
768 seq_page_flag(seq, page, referenced, has_flags);
769 seq_page_flag(seq, page, uptodate, has_flags);
770 seq_page_flag(seq, page, dirty, has_flags);
771 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,12))
772 seq_page_flag(seq, page, highmem, has_flags);
774 seq_page_flag(seq, page, writeback, has_flags);
776 seq_puts(seq, "-]\n");
778 seq_puts(seq, "]\n");
781 spin_unlock(&sbi->ll_lock);
786 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
789 struct ll_async_page *llap, *dummy_llap = seq->private;
790 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
792 /* bail if we just displayed the banner */
793 if (dummy_llap->llap_magic == 0) {
794 dummy_llap->llap_magic = 1;
798 /* we've just displayed the llap that is after us in the list.
799 * we advance to a position beyond it, returning null if there
800 * isn't another llap in the list beyond that new position. */
801 spin_lock(&sbi->ll_lock);
802 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
803 list_del_init(&dummy_llap->llap_pglist_item);
805 list_add(&dummy_llap->llap_pglist_item,&llap->llap_pglist_item);
806 llap =llite_pglist_next_llap(sbi,&dummy_llap->llap_pglist_item);
808 spin_unlock(&sbi->ll_lock);
812 dummy_llap->llap_magic = 2;
818 static void null_stop(struct seq_file *seq, void *v)
822 struct seq_operations llite_dump_pgcache_seq_sops = {
823 .start = llite_dump_pgcache_seq_start,
825 .next = llite_dump_pgcache_seq_next,
826 .show = llite_dump_pgcache_seq_show,
829 /* we're displaying llaps in a list_head list. we don't want to hold a lock
830 * while we walk the entire list, and we don't want to have to seek into
831 * the right position in the list as an app advances with many syscalls. we
832 * allocate a dummy llap and hang it off file->private. its position in
833 * the list records where the app is currently displaying. this way our
834 * seq .start and .stop don't actually do anything. .next returns null
835 * when the dummy hits the end of the list which eventually leads to .release
836 * where we tear down. this kind of displaying is super-racey, so we put
837 * a generation counter on the list so the output shows when the list
838 * changes between reads.
840 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
842 struct proc_dir_entry *dp = PDE(inode);
843 struct ll_async_page *dummy_llap;
844 struct seq_file *seq;
845 struct ll_sb_info *sbi = dp->data;
848 LPROCFS_ENTRY_AND_CHECK(dp);
850 OBD_ALLOC_PTR_WAIT(dummy_llap);
851 if (dummy_llap == NULL)
853 dummy_llap->llap_page = NULL;
854 dummy_llap->llap_cookie = sbi;
855 dummy_llap->llap_magic = 0;
857 rc = seq_open(file, &llite_dump_pgcache_seq_sops);
859 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
862 seq = file->private_data;
863 seq->private = dummy_llap;
865 spin_lock(&sbi->ll_lock);
866 list_add(&dummy_llap->llap_pglist_item, &sbi->ll_pglist);
867 spin_unlock(&sbi->ll_lock);
875 static int llite_dump_pgcache_seq_release(struct inode *inode,
878 struct seq_file *seq = file->private_data;
879 struct ll_async_page *dummy_llap = seq->private;
880 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
882 spin_lock(&sbi->ll_lock);
883 if (!list_empty(&dummy_llap->llap_pglist_item))
884 list_del_init(&dummy_llap->llap_pglist_item);
885 spin_unlock(&sbi->ll_lock);
886 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
888 return lprocfs_seq_release(inode, file);
891 struct file_operations llite_dump_pgcache_fops = {
892 .owner = THIS_MODULE,
893 .open = llite_dump_pgcache_seq_open,
895 .release = llite_dump_pgcache_seq_release,
898 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
901 struct ll_sb_info *sbi = seq->private;
902 struct ll_ra_info *ra = &sbi->ll_ra_info;
904 static char *ra_stat_strings[] = {
905 [RA_STAT_HIT] = "hits",
906 [RA_STAT_MISS] = "misses",
907 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
908 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
909 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
910 [RA_STAT_FAILED_MATCH] = "failed lock match",
911 [RA_STAT_DISCARDED] = "read but discarded",
912 [RA_STAT_ZERO_LEN] = "zero length file",
913 [RA_STAT_ZERO_WINDOW] = "zero size window",
914 [RA_STAT_EOF] = "read-ahead to EOF",
915 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
916 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
919 do_gettimeofday(&now);
921 spin_lock(&sbi->ll_lock);
923 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
924 now.tv_sec, now.tv_usec);
925 seq_printf(seq, "pending issued pages: %lu\n",
928 for(i = 0; i < _NR_RA_STAT; i++)
929 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
932 spin_unlock(&sbi->ll_lock);
937 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
938 size_t len, loff_t *off)
940 struct seq_file *seq = file->private_data;
941 struct ll_sb_info *sbi = seq->private;
942 struct ll_ra_info *ra = &sbi->ll_ra_info;
944 spin_lock(&sbi->ll_lock);
945 memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
946 spin_unlock(&sbi->ll_lock);
951 LPROC_SEQ_FOPS(ll_ra_stats);
953 #define pct(a,b) (b ? a * 100 / b : 0)
955 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
956 struct seq_file *seq, int which)
958 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
959 unsigned long start, end, r, w;
960 char *unitp = "KMGTPEZY";
962 struct per_process_info *pp_info = &io_extents->pp_extents[which];
968 for(i = 0; i < LL_HIST_MAX; i++) {
969 read_tot += pp_info->pp_r_hist.oh_buckets[i];
970 write_tot += pp_info->pp_w_hist.oh_buckets[i];
973 for(i = 0; i < LL_HIST_MAX; i++) {
974 r = pp_info->pp_r_hist.oh_buckets[i];
975 w = pp_info->pp_w_hist.oh_buckets[i];
978 end = 1 << (i + LL_HIST_START - units);
979 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
980 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
981 (i == LL_HIST_MAX - 1) ? '+' : ' ',
982 r, pct(r, read_tot), pct(read_cum, read_tot),
983 w, pct(w, write_tot), pct(write_cum, write_tot));
985 if (start == 1<<10) {
990 if (read_cum == read_tot && write_cum == write_tot)
995 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
998 struct ll_sb_info *sbi = seq->private;
999 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1002 do_gettimeofday(&now);
1004 if (!sbi->ll_rw_stats_on) {
1005 seq_printf(seq, "Disabled\n"
1006 "Write anything in this file to activate\n");
1009 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1010 now.tv_sec, now.tv_usec);
1011 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1012 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1013 "extents", "calls", "%", "cum%",
1014 "calls", "%", "cum%");
1015 spin_lock(&sbi->ll_pp_extent_lock);
1016 for(k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1017 if(io_extents->pp_extents[k].pid != 0) {
1018 seq_printf(seq, "\nPID: %d\n",
1019 io_extents->pp_extents[k].pid);
1020 ll_display_extents_info(io_extents, seq, k);
1023 spin_unlock(&sbi->ll_pp_extent_lock);
1027 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1028 const char *buf, size_t len,
1031 struct seq_file *seq = file->private_data;
1032 struct ll_sb_info *sbi = seq->private;
1033 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1036 sbi->ll_rw_stats_on = 1;
1037 spin_lock(&sbi->ll_pp_extent_lock);
1038 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1039 io_extents->pp_extents[i].pid = 0;
1040 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1041 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1043 spin_unlock(&sbi->ll_pp_extent_lock);
1047 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1049 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1052 struct ll_sb_info *sbi = seq->private;
1053 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1055 do_gettimeofday(&now);
1057 if (!sbi->ll_rw_stats_on) {
1058 seq_printf(seq, "Disabled\n"
1059 "Write anything in this file to activate\n");
1062 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1063 now.tv_sec, now.tv_usec);
1065 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1066 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1067 "extents", "calls", "%", "cum%",
1068 "calls", "%", "cum%");
1069 spin_lock(&sbi->ll_lock);
1070 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1071 spin_unlock(&sbi->ll_lock);
1076 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1077 size_t len, loff_t *off)
1079 struct seq_file *seq = file->private_data;
1080 struct ll_sb_info *sbi = seq->private;
1081 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1084 sbi->ll_rw_stats_on = 1;
1085 spin_lock(&sbi->ll_pp_extent_lock);
1086 for(i = 0; i <= LL_PROCESS_HIST_MAX; i++)
1088 io_extents->pp_extents[i].pid = 0;
1089 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1090 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1092 spin_unlock(&sbi->ll_pp_extent_lock);
1097 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1099 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
1100 *file, size_t count, int rw)
1103 struct ll_rw_process_info *process;
1104 struct ll_rw_process_info *offset;
1105 int *off_count = &sbi->ll_rw_offset_entry_count;
1106 int *process_count = &sbi->ll_offset_process_count;
1107 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1109 if(!sbi->ll_rw_stats_on)
1111 process = sbi->ll_rw_process_info;
1112 offset = sbi->ll_rw_offset_info;
1114 spin_lock(&sbi->ll_pp_extent_lock);
1115 /* Extent statistics */
1116 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1117 if(io_extents->pp_extents[i].pid == pid) {
1125 sbi->ll_extent_process_count =
1126 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1127 cur = sbi->ll_extent_process_count;
1128 io_extents->pp_extents[cur].pid = pid;
1129 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1130 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1133 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1134 (i < (LL_HIST_MAX - 1)); i++);
1136 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1137 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1139 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1140 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1142 spin_unlock(&sbi->ll_pp_extent_lock);
1144 spin_lock(&sbi->ll_process_lock);
1145 /* Offset statistics */
1146 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1147 if (process[i].rw_pid == pid) {
1148 if (process[i].rw_last_file != file) {
1149 process[i].rw_range_start = file->f_pos;
1150 process[i].rw_last_file_pos =
1151 file->f_pos + count;
1152 process[i].rw_smallest_extent = count;
1153 process[i].rw_largest_extent = count;
1154 process[i].rw_offset = 0;
1155 process[i].rw_last_file = file;
1156 spin_unlock(&sbi->ll_process_lock);
1159 if (process[i].rw_last_file_pos != file->f_pos) {
1161 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1162 offset[*off_count].rw_op = process[i].rw_op;
1163 offset[*off_count].rw_pid = pid;
1164 offset[*off_count].rw_range_start =
1165 process[i].rw_range_start;
1166 offset[*off_count].rw_range_end =
1167 process[i].rw_last_file_pos;
1168 offset[*off_count].rw_smallest_extent =
1169 process[i].rw_smallest_extent;
1170 offset[*off_count].rw_largest_extent =
1171 process[i].rw_largest_extent;
1172 offset[*off_count].rw_offset =
1173 process[i].rw_offset;
1174 process[i].rw_op = rw;
1175 process[i].rw_range_start = file->f_pos;
1176 process[i].rw_smallest_extent = count;
1177 process[i].rw_largest_extent = count;
1178 process[i].rw_offset = file->f_pos -
1179 process[i].rw_last_file_pos;
1181 if(process[i].rw_smallest_extent > count)
1182 process[i].rw_smallest_extent = count;
1183 if(process[i].rw_largest_extent < count)
1184 process[i].rw_largest_extent = count;
1185 process[i].rw_last_file_pos = file->f_pos + count;
1186 spin_unlock(&sbi->ll_process_lock);
1190 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1191 process[*process_count].rw_pid = pid;
1192 process[*process_count].rw_op = rw;
1193 process[*process_count].rw_range_start = file->f_pos;
1194 process[*process_count].rw_last_file_pos = file->f_pos + count;
1195 process[*process_count].rw_smallest_extent = count;
1196 process[*process_count].rw_largest_extent = count;
1197 process[*process_count].rw_offset = 0;
1198 process[*process_count].rw_last_file = file;
1199 spin_unlock(&sbi->ll_process_lock);
1202 char lpszt[] = LPSZ;
1204 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1207 struct ll_sb_info *sbi = seq->private;
1208 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1209 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1213 do_gettimeofday(&now);
1215 if (!sbi->ll_rw_stats_on) {
1216 seq_printf(seq, "Disabled\n"
1217 "Write anything in this file to activate\n");
1220 spin_lock(&sbi->ll_process_lock);
1222 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1223 now.tv_sec, now.tv_usec);
1224 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1225 "R/W", "PID", "RANGE START", "RANGE END",
1226 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1227 sprintf(format, "%s%s%s%s%s\n",
1228 "%3c %10d %14Lu %14Lu %17", lpszt+1, " %17", lpszt+1, " %14Ld");
1229 /* We stored the discontiguous offsets here; print them first */
1230 for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1231 if (offset[i].rw_pid != 0)
1232 /* Is there a way to snip the '%' off of LPSZ? */
1233 seq_printf(seq, format,
1234 offset[i].rw_op ? 'W' : 'R',
1236 offset[i].rw_range_start,
1237 offset[i].rw_range_end,
1238 offset[i].rw_smallest_extent,
1239 offset[i].rw_largest_extent,
1240 offset[i].rw_offset);
1242 /* Then print the current offsets for each process */
1243 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1244 if (process[i].rw_pid != 0)
1245 seq_printf(seq, format,
1246 process[i].rw_op ? 'W' : 'R',
1248 process[i].rw_range_start,
1249 process[i].rw_last_file_pos,
1250 process[i].rw_smallest_extent,
1251 process[i].rw_largest_extent,
1252 process[i].rw_offset);
1254 spin_unlock(&sbi->ll_process_lock);
1259 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1260 size_t len, loff_t *off)
1262 struct seq_file *seq = file->private_data;
1263 struct ll_sb_info *sbi = seq->private;
1264 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1265 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1267 sbi->ll_rw_stats_on = 1;
1269 spin_lock(&sbi->ll_process_lock);
1270 sbi->ll_offset_process_count = 0;
1271 sbi->ll_rw_offset_entry_count = 0;
1272 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1273 LL_PROCESS_HIST_MAX);
1274 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1275 LL_OFFSET_HIST_MAX);
1276 spin_unlock(&sbi->ll_process_lock);
1281 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1283 LPROCFS_INIT_VARS(llite, NULL, lprocfs_obd_vars)
1284 #endif /* LPROCFS */