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_llite_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 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
520 /* special inode operation */
521 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
522 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
523 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
524 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
525 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
526 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
527 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
528 { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
530 { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
535 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
539 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
540 lprocfs_counter_add(sbi->ll_stats, op, count);
541 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
542 sbi->ll_stats_track_id == current->pid)
543 lprocfs_counter_add(sbi->ll_stats, op, count);
544 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
545 sbi->ll_stats_track_id == current->p_pptr->pid)
546 lprocfs_counter_add(sbi->ll_stats, op, count);
547 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
548 sbi->ll_stats_track_id == current->gid)
549 lprocfs_counter_add(sbi->ll_stats, op, count);
551 EXPORT_SYMBOL(ll_stats_ops_tally);
553 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
554 struct super_block *sb, char *osc, char *mdc)
556 struct lprocfs_vars lvars[2];
557 struct lustre_sb_info *lsi = s2lsi(sb);
558 struct ll_sb_info *sbi = ll_s2sbi(sb);
559 struct obd_device *obd;
560 char name[MAX_STRING_SIZE + 1], *ptr;
562 struct proc_dir_entry *entry;
565 memset(lvars, 0, sizeof(lvars));
567 name[MAX_STRING_SIZE] = '\0';
568 lvars[0].name = name;
570 LASSERT(sbi != NULL);
571 LASSERT(mdc != NULL);
572 LASSERT(osc != NULL);
575 len = strlen(lsi->lsi_lmd->lmd_profile);
576 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
577 if (ptr && (strcmp(ptr, "-client") == 0))
581 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
582 lsi->lsi_lmd->lmd_profile, sb);
584 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
585 if (IS_ERR(sbi->ll_proc_root)) {
586 err = PTR_ERR(sbi->ll_proc_root);
587 sbi->ll_proc_root = NULL;
591 entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root);
593 GOTO(out, err = -ENOMEM);
594 entry->proc_fops = &llite_dump_pgcache_fops;
597 entry = create_proc_entry("read_ahead_stats", 0644, sbi->ll_proc_root);
599 GOTO(out, err = -ENOMEM);
600 entry->proc_fops = &ll_ra_stats_fops;
603 entry = create_proc_entry("extents_stats", 0644, sbi->ll_proc_root);
605 GOTO(out, err = -ENOMEM);
606 entry->proc_fops = &ll_rw_extents_stats_fops;
609 entry = create_proc_entry("extents_stats_per_process", 0644,
612 GOTO(out, err = -ENOMEM);
613 entry->proc_fops = &ll_rw_extents_stats_pp_fops;
616 entry = create_proc_entry("offset_stats", 0644, sbi->ll_proc_root);
618 GOTO(out, err = -ENOMEM);
619 entry->proc_fops = &ll_rw_offset_stats_fops;
622 /* File operations stats */
623 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
624 LPROCFS_STATS_FLAG_PERCPU);
625 if (sbi->ll_stats == NULL)
626 GOTO(out, err = -ENOMEM);
627 /* do counter init */
628 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
629 __u32 type = llite_opcode_table[id].type;
631 if (type & LPROCFS_TYPE_REGS)
633 else if (type & LPROCFS_TYPE_BYTES)
635 else if (type & LPROCFS_TYPE_PAGES)
637 lprocfs_counter_init(sbi->ll_stats,
638 llite_opcode_table[id].opcode,
639 (type & LPROCFS_CNTR_AVGMINMAX),
640 llite_opcode_table[id].opname, ptr);
642 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
646 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
651 obd = class_name2obd(mdc);
653 LASSERT(obd != NULL);
654 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
655 LASSERT(obd->obd_type->typ_name != NULL);
657 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
658 obd->obd_type->typ_name);
659 lvars[0].read_fptr = lprocfs_rd_name;
660 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
664 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
665 lvars[0].read_fptr = lprocfs_rd_uuid;
666 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
671 obd = class_name2obd(osc);
673 LASSERT(obd != NULL);
674 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
675 LASSERT(obd->obd_type->typ_name != NULL);
677 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
678 obd->obd_type->typ_name);
679 lvars[0].read_fptr = lprocfs_rd_name;
680 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
684 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
685 lvars[0].read_fptr = lprocfs_rd_uuid;
686 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
689 lprocfs_remove(&sbi->ll_proc_root);
690 lprocfs_free_stats(&sbi->ll_stats);
695 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
697 if (sbi->ll_proc_root) {
698 lprocfs_remove(&sbi->ll_proc_root);
699 lprocfs_free_stats(&sbi->ll_stats);
702 #undef MAX_STRING_SIZE
704 #define seq_page_flag(seq, page, flag, has_flags) do { \
705 if (test_bit(PG_##flag, &(page)->flags)) { \
709 seq_putc(seq, '|'); \
710 seq_puts(seq, #flag); \
714 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
716 struct ll_async_page *dummy_llap = seq->private;
718 if (dummy_llap->llap_magic == 2)
724 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
726 struct ll_async_page *llap, *dummy_llap = seq->private;
727 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
729 /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
730 * it in our own state */
731 if (dummy_llap->llap_magic == 0) {
732 seq_printf(seq, "gener | llap cookie origin wq du wb | page "
733 "inode index count [ page flags ]\n");
737 spin_lock(&sbi->ll_lock);
739 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
742 struct page *page = llap->llap_page;
744 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
747 seq_printf(seq," %5lu | %p %p %s %s %s %s | %p %lu/%u(%p) "
750 llap, llap->llap_cookie,
751 llap_origins[llap->llap_origin],
752 llap->llap_write_queued ? "wq" : "- ",
753 llap->llap_defer_uptodate ? "du" : "- ",
754 PageWriteback(page) ? "wb" : "-",
755 page, page->mapping->host->i_ino,
756 page->mapping->host->i_generation,
757 page->mapping->host, page->index,
759 seq_page_flag(seq, page, locked, has_flags);
760 seq_page_flag(seq, page, error, has_flags);
761 seq_page_flag(seq, page, referenced, has_flags);
762 seq_page_flag(seq, page, uptodate, has_flags);
763 seq_page_flag(seq, page, dirty, has_flags);
764 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,12))
765 seq_page_flag(seq, page, highmem, has_flags);
767 seq_page_flag(seq, page, writeback, has_flags);
769 seq_puts(seq, "-]\n");
771 seq_puts(seq, "]\n");
774 spin_unlock(&sbi->ll_lock);
779 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
782 struct ll_async_page *llap, *dummy_llap = seq->private;
783 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
785 /* bail if we just displayed the banner */
786 if (dummy_llap->llap_magic == 0) {
787 dummy_llap->llap_magic = 1;
791 /* we've just displayed the llap that is after us in the list.
792 * we advance to a position beyond it, returning null if there
793 * isn't another llap in the list beyond that new position. */
794 spin_lock(&sbi->ll_lock);
795 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
796 list_del_init(&dummy_llap->llap_pglist_item);
798 list_add(&dummy_llap->llap_pglist_item,&llap->llap_pglist_item);
799 llap =llite_pglist_next_llap(sbi,&dummy_llap->llap_pglist_item);
801 spin_unlock(&sbi->ll_lock);
805 dummy_llap->llap_magic = 2;
811 static void null_stop(struct seq_file *seq, void *v)
815 struct seq_operations llite_dump_pgcache_seq_sops = {
816 .start = llite_dump_pgcache_seq_start,
818 .next = llite_dump_pgcache_seq_next,
819 .show = llite_dump_pgcache_seq_show,
822 /* we're displaying llaps in a list_head list. we don't want to hold a lock
823 * while we walk the entire list, and we don't want to have to seek into
824 * the right position in the list as an app advances with many syscalls. we
825 * allocate a dummy llap and hang it off file->private. its position in
826 * the list records where the app is currently displaying. this way our
827 * seq .start and .stop don't actually do anything. .next returns null
828 * when the dummy hits the end of the list which eventually leads to .release
829 * where we tear down. this kind of displaying is super-racey, so we put
830 * a generation counter on the list so the output shows when the list
831 * changes between reads.
833 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
835 struct proc_dir_entry *dp = PDE(inode);
836 struct ll_async_page *dummy_llap;
837 struct seq_file *seq;
838 struct ll_sb_info *sbi = dp->data;
841 LPROCFS_ENTRY_AND_CHECK(dp);
843 OBD_ALLOC_PTR_WAIT(dummy_llap);
844 if (dummy_llap == NULL)
846 dummy_llap->llap_page = NULL;
847 dummy_llap->llap_cookie = sbi;
848 dummy_llap->llap_magic = 0;
850 rc = seq_open(file, &llite_dump_pgcache_seq_sops);
852 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
855 seq = file->private_data;
856 seq->private = dummy_llap;
858 spin_lock(&sbi->ll_lock);
859 list_add(&dummy_llap->llap_pglist_item, &sbi->ll_pglist);
860 spin_unlock(&sbi->ll_lock);
868 static int llite_dump_pgcache_seq_release(struct inode *inode,
871 struct seq_file *seq = file->private_data;
872 struct ll_async_page *dummy_llap = seq->private;
873 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
875 spin_lock(&sbi->ll_lock);
876 if (!list_empty(&dummy_llap->llap_pglist_item))
877 list_del_init(&dummy_llap->llap_pglist_item);
878 spin_unlock(&sbi->ll_lock);
879 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
881 return lprocfs_seq_release(inode, file);
884 struct file_operations llite_dump_pgcache_fops = {
885 .owner = THIS_MODULE,
886 .open = llite_dump_pgcache_seq_open,
888 .release = llite_dump_pgcache_seq_release,
891 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
894 struct ll_sb_info *sbi = seq->private;
895 struct ll_ra_info *ra = &sbi->ll_ra_info;
897 static char *ra_stat_strings[] = {
898 [RA_STAT_HIT] = "hits",
899 [RA_STAT_MISS] = "misses",
900 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
901 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
902 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
903 [RA_STAT_FAILED_MATCH] = "failed lock match",
904 [RA_STAT_DISCARDED] = "read but discarded",
905 [RA_STAT_ZERO_LEN] = "zero length file",
906 [RA_STAT_ZERO_WINDOW] = "zero size window",
907 [RA_STAT_EOF] = "read-ahead to EOF",
908 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
909 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
912 do_gettimeofday(&now);
914 spin_lock(&sbi->ll_lock);
916 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
917 now.tv_sec, now.tv_usec);
918 seq_printf(seq, "pending issued pages: %lu\n",
921 for(i = 0; i < _NR_RA_STAT; i++)
922 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
925 spin_unlock(&sbi->ll_lock);
930 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
931 size_t len, loff_t *off)
933 struct seq_file *seq = file->private_data;
934 struct ll_sb_info *sbi = seq->private;
935 struct ll_ra_info *ra = &sbi->ll_ra_info;
937 spin_lock(&sbi->ll_lock);
938 memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
939 spin_unlock(&sbi->ll_lock);
944 LPROC_SEQ_FOPS(ll_ra_stats);
946 #define pct(a,b) (b ? a * 100 / b : 0)
948 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
949 struct seq_file *seq, int which)
951 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
952 unsigned long start, end, r, w;
953 char *unitp = "KMGTPEZY";
955 struct per_process_info *pp_info = &io_extents->pp_extents[which];
961 for(i = 0; i < LL_HIST_MAX; i++) {
962 read_tot += pp_info->pp_r_hist.oh_buckets[i];
963 write_tot += pp_info->pp_w_hist.oh_buckets[i];
966 for(i = 0; i < LL_HIST_MAX; i++) {
967 r = pp_info->pp_r_hist.oh_buckets[i];
968 w = pp_info->pp_w_hist.oh_buckets[i];
971 end = 1 << (i + LL_HIST_START - units);
972 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
973 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
974 (i == LL_HIST_MAX - 1) ? '+' : ' ',
975 r, pct(r, read_tot), pct(read_cum, read_tot),
976 w, pct(w, write_tot), pct(write_cum, write_tot));
978 if (start == 1<<10) {
983 if (read_cum == read_tot && write_cum == write_tot)
988 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
991 struct ll_sb_info *sbi = seq->private;
992 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
995 do_gettimeofday(&now);
997 if (!sbi->ll_rw_stats_on) {
998 seq_printf(seq, "Disabled\n"
999 "Write anything in this file to activate\n");
1002 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1003 now.tv_sec, now.tv_usec);
1004 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1005 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1006 "extents", "calls", "%", "cum%",
1007 "calls", "%", "cum%");
1008 spin_lock(&sbi->ll_pp_extent_lock);
1009 for(k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1010 if(io_extents->pp_extents[k].pid != 0) {
1011 seq_printf(seq, "\nPID: %d\n",
1012 io_extents->pp_extents[k].pid);
1013 ll_display_extents_info(io_extents, seq, k);
1016 spin_unlock(&sbi->ll_pp_extent_lock);
1020 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1021 const char *buf, size_t len,
1024 struct seq_file *seq = file->private_data;
1025 struct ll_sb_info *sbi = seq->private;
1026 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1029 sbi->ll_rw_stats_on = 1;
1030 spin_lock(&sbi->ll_pp_extent_lock);
1031 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1032 io_extents->pp_extents[i].pid = 0;
1033 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1034 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1036 spin_unlock(&sbi->ll_pp_extent_lock);
1040 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1042 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1045 struct ll_sb_info *sbi = seq->private;
1046 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1048 do_gettimeofday(&now);
1050 if (!sbi->ll_rw_stats_on) {
1051 seq_printf(seq, "Disabled\n"
1052 "Write anything in this file to activate\n");
1055 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1056 now.tv_sec, now.tv_usec);
1058 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1059 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1060 "extents", "calls", "%", "cum%",
1061 "calls", "%", "cum%");
1062 spin_lock(&sbi->ll_lock);
1063 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1064 spin_unlock(&sbi->ll_lock);
1069 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1070 size_t len, loff_t *off)
1072 struct seq_file *seq = file->private_data;
1073 struct ll_sb_info *sbi = seq->private;
1074 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1077 sbi->ll_rw_stats_on = 1;
1078 spin_lock(&sbi->ll_pp_extent_lock);
1079 for(i = 0; i <= LL_PROCESS_HIST_MAX; i++)
1081 io_extents->pp_extents[i].pid = 0;
1082 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1083 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1085 spin_unlock(&sbi->ll_pp_extent_lock);
1090 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1092 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
1093 *file, size_t count, int rw)
1096 struct ll_rw_process_info *process;
1097 struct ll_rw_process_info *offset;
1098 int *off_count = &sbi->ll_rw_offset_entry_count;
1099 int *process_count = &sbi->ll_offset_process_count;
1100 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1102 if(!sbi->ll_rw_stats_on)
1104 process = sbi->ll_rw_process_info;
1105 offset = sbi->ll_rw_offset_info;
1107 spin_lock(&sbi->ll_pp_extent_lock);
1108 /* Extent statistics */
1109 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1110 if(io_extents->pp_extents[i].pid == pid) {
1118 sbi->ll_extent_process_count =
1119 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1120 cur = sbi->ll_extent_process_count;
1121 io_extents->pp_extents[cur].pid = pid;
1122 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1123 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1126 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1127 (i < (LL_HIST_MAX - 1)); i++);
1129 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1130 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1132 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1133 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1135 spin_unlock(&sbi->ll_pp_extent_lock);
1137 spin_lock(&sbi->ll_process_lock);
1138 /* Offset statistics */
1139 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1140 if (process[i].rw_pid == pid) {
1141 if (process[i].rw_last_file != file) {
1142 process[i].rw_range_start = file->f_pos;
1143 process[i].rw_last_file_pos =
1144 file->f_pos + count;
1145 process[i].rw_smallest_extent = count;
1146 process[i].rw_largest_extent = count;
1147 process[i].rw_offset = 0;
1148 process[i].rw_last_file = file;
1149 spin_unlock(&sbi->ll_process_lock);
1152 if (process[i].rw_last_file_pos != file->f_pos) {
1154 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1155 offset[*off_count].rw_op = process[i].rw_op;
1156 offset[*off_count].rw_pid = pid;
1157 offset[*off_count].rw_range_start =
1158 process[i].rw_range_start;
1159 offset[*off_count].rw_range_end =
1160 process[i].rw_last_file_pos;
1161 offset[*off_count].rw_smallest_extent =
1162 process[i].rw_smallest_extent;
1163 offset[*off_count].rw_largest_extent =
1164 process[i].rw_largest_extent;
1165 offset[*off_count].rw_offset =
1166 process[i].rw_offset;
1167 process[i].rw_op = rw;
1168 process[i].rw_range_start = file->f_pos;
1169 process[i].rw_smallest_extent = count;
1170 process[i].rw_largest_extent = count;
1171 process[i].rw_offset = file->f_pos -
1172 process[i].rw_last_file_pos;
1174 if(process[i].rw_smallest_extent > count)
1175 process[i].rw_smallest_extent = count;
1176 if(process[i].rw_largest_extent < count)
1177 process[i].rw_largest_extent = count;
1178 process[i].rw_last_file_pos = file->f_pos + count;
1179 spin_unlock(&sbi->ll_process_lock);
1183 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1184 process[*process_count].rw_pid = pid;
1185 process[*process_count].rw_op = rw;
1186 process[*process_count].rw_range_start = file->f_pos;
1187 process[*process_count].rw_last_file_pos = file->f_pos + count;
1188 process[*process_count].rw_smallest_extent = count;
1189 process[*process_count].rw_largest_extent = count;
1190 process[*process_count].rw_offset = 0;
1191 process[*process_count].rw_last_file = file;
1192 spin_unlock(&sbi->ll_process_lock);
1195 char lpszt[] = LPSZ;
1197 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1200 struct ll_sb_info *sbi = seq->private;
1201 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1202 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1206 do_gettimeofday(&now);
1208 if (!sbi->ll_rw_stats_on) {
1209 seq_printf(seq, "Disabled\n"
1210 "Write anything in this file to activate\n");
1213 spin_lock(&sbi->ll_process_lock);
1215 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1216 now.tv_sec, now.tv_usec);
1217 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1218 "R/W", "PID", "RANGE START", "RANGE END",
1219 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1220 sprintf(format, "%s%s%s%s%s\n",
1221 "%3c %10d %14Lu %14Lu %17", lpszt+1, " %17", lpszt+1, " %14Ld");
1222 /* We stored the discontiguous offsets here; print them first */
1223 for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1224 if (offset[i].rw_pid != 0)
1225 /* Is there a way to snip the '%' off of LPSZ? */
1226 seq_printf(seq, format,
1227 offset[i].rw_op ? 'W' : 'R',
1229 offset[i].rw_range_start,
1230 offset[i].rw_range_end,
1231 offset[i].rw_smallest_extent,
1232 offset[i].rw_largest_extent,
1233 offset[i].rw_offset);
1235 /* Then print the current offsets for each process */
1236 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1237 if (process[i].rw_pid != 0)
1238 seq_printf(seq, format,
1239 process[i].rw_op ? 'W' : 'R',
1241 process[i].rw_range_start,
1242 process[i].rw_last_file_pos,
1243 process[i].rw_smallest_extent,
1244 process[i].rw_largest_extent,
1245 process[i].rw_offset);
1247 spin_unlock(&sbi->ll_process_lock);
1252 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1253 size_t len, loff_t *off)
1255 struct seq_file *seq = file->private_data;
1256 struct ll_sb_info *sbi = seq->private;
1257 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1258 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1260 sbi->ll_rw_stats_on = 1;
1262 spin_lock(&sbi->ll_process_lock);
1263 sbi->ll_offset_process_count = 0;
1264 sbi->ll_rw_offset_entry_count = 0;
1265 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1266 LL_PROCESS_HIST_MAX);
1267 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1268 LL_OFFSET_HIST_MAX);
1269 spin_unlock(&sbi->ll_process_lock);
1274 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1276 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1278 lvars->module_vars = NULL;
1279 lvars->obd_vars = lprocfs_llite_obd_vars;
1281 #endif /* LPROCFS */