lustre/llite/lproc_llite.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   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.
  11  *
  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.
  16  *
  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.
  20  *
  21  */
  22 #define DEBUG_SUBSYSTEM S_LLITE
  23
  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>
  29
  30 #include "llite_internal.h"
  31
  32 struct proc_dir_entry *proc_lustre_fs_root;
  33
  34 #ifdef LPROCFS
  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;
  41
  42 static int ll_rd_blksize(char *page, char **start, off_t off, int count,
  43                          int *eof, void *data)
  44 {
  45         struct super_block *sb = (struct super_block *)data;
  46         struct obd_statfs osfs;
  47         int rc;
  48
  49         LASSERT(sb != NULL);
  50         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
  51         if (!rc) {
  52               *eof = 1;
  53               rc = snprintf(page, count, "%u\n", osfs.os_bsize);
  54         }
  55
  56         return rc;
  57 }
  58
  59 static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count,
  60                              int *eof, void *data)
  61 {
  62         struct super_block *sb = (struct super_block *)data;
  63         struct obd_statfs osfs;
  64         int rc;
  65
  66         LASSERT(sb != NULL);
  67         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
  68         if (!rc) {
  69                 __u32 blk_size = osfs.os_bsize >> 10;
  70                 __u64 result = osfs.os_blocks;
  71
  72                 while (blk_size >>= 1)
  73                         result <<= 1;
  74
  75                 *eof = 1;
  76                 rc = snprintf(page, count, LPU64"\n", result);
  77         }
  78         return rc;
  79
  80 }
  81
  82 static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count,
  83                             int *eof, void *data)
  84 {
  85         struct super_block *sb = (struct super_block *)data;
  86         struct obd_statfs osfs;
  87         int rc;
  88
  89         LASSERT(sb != NULL);
  90         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
  91         if (!rc) {
  92                 __u32 blk_size = osfs.os_bsize >> 10;
  93                 __u64 result = osfs.os_bfree;
  94
  95                 while (blk_size >>= 1)
  96                         result <<= 1;
  97
  98                 *eof = 1;
  99                 rc = snprintf(page, count, LPU64"\n", result);
 100         }
 101         return rc;
 102 }
 103
 104 static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count,
 105                              int *eof, void *data)
 106 {
 107         struct super_block *sb = (struct super_block *)data;
 108         struct obd_statfs osfs;
 109         int rc;
 110
 111         LASSERT(sb != NULL);
 112         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
 113         if (!rc) {
 114                 __u32 blk_size = osfs.os_bsize >> 10;
 115                 __u64 result = osfs.os_bavail;
 116
 117                 while (blk_size >>= 1)
 118                         result <<= 1;
 119
 120                 *eof = 1;
 121                 rc = snprintf(page, count, LPU64"\n", result);
 122         }
 123         return rc;
 124 }
 125
 126 static int ll_rd_filestotal(char *page, char **start, off_t off, int count,
 127                             int *eof, void *data)
 128 {
 129         struct super_block *sb = (struct super_block *)data;
 130         struct obd_statfs osfs;
 131         int rc;
 132
 133         LASSERT(sb != NULL);
 134         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
 135         if (!rc) {
 136                  *eof = 1;
 137                  rc = snprintf(page, count, LPU64"\n", osfs.os_files);
 138         }
 139         return rc;
 140 }
 141
 142 static int ll_rd_filesfree(char *page, char **start, off_t off, int count,
 143                            int *eof, void *data)
 144 {
 145         struct super_block *sb = (struct super_block *)data;
 146         struct obd_statfs osfs;
 147         int rc;
 148
 149         LASSERT(sb != NULL);
 150         rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ);
 151         if (!rc) {
 152                  *eof = 1;
 153                  rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
 154         }
 155         return rc;
 156
 157 }
 158
 159 static int ll_rd_fstype(char *page, char **start, off_t off, int count,
 160                         int *eof, void *data)
 161 {
 162         struct super_block *sb = (struct super_block*)data;
 163
 164         LASSERT(sb != NULL);
 165         *eof = 1;
 166         return snprintf(page, count, "%s\n", sb->s_type->name);
 167 }
 168
 169 static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count,
 170                          int *eof, void *data)
 171 {
 172         struct super_block *sb = (struct super_block *)data;
 173
 174         LASSERT(sb != NULL);
 175         *eof = 1;
 176         return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
 177 }
 178
 179 static int ll_rd_max_readahead_mb(char *page, char **start, off_t off,
 180                                    int count, int *eof, void *data)
 181 {
 182         struct super_block *sb = data;
 183         struct ll_sb_info *sbi = ll_s2sbi(sb);
 184         long pages_number;
 185         int mult;
 186
 187         spin_lock(&sbi->ll_lock);
 188         pages_number = sbi->ll_ra_info.ra_max_pages;
 189         spin_unlock(&sbi->ll_lock);
 190
 191         mult = 1 << (20 - CFS_PAGE_SHIFT);
 192         return lprocfs_read_frac_helper(page, count, pages_number, mult);
 193 }
 194
 195 static int ll_wr_max_readahead_mb(struct file *file, const char *buffer,
 196                                    unsigned long count, void *data)
 197 {
 198         struct super_block *sb = data;
 199         struct ll_sb_info *sbi = ll_s2sbi(sb);
 200         int mult, rc, pages_number;
 201
 202         mult = 1 << (20 - CFS_PAGE_SHIFT);
 203         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 204         if (rc)
 205                 return rc;
 206
 207         if (pages_number < 0 || pages_number > num_physpages / 2) {
 208                 CERROR("can't set file readahead more than %lu MB\n",
 209                         num_physpages >> (20 - CFS_PAGE_SHIFT + 1)); /*1/2 of RAM*/
 210                 return -ERANGE;
 211         }
 212
 213         spin_lock(&sbi->ll_lock);
 214         sbi->ll_ra_info.ra_max_pages = pages_number;
 215         spin_unlock(&sbi->ll_lock);
 216
 217         return count;
 218 }
 219
 220 static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off,
 221                                        int count, int *eof, void *data)
 222 {
 223         struct super_block *sb = data;
 224         struct ll_sb_info *sbi = ll_s2sbi(sb);
 225         long pages_number;
 226         int mult;
 227
 228         spin_lock(&sbi->ll_lock);
 229         pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
 230         spin_unlock(&sbi->ll_lock);
 231
 232         mult = 1 << (20 - CFS_PAGE_SHIFT);
 233         return lprocfs_read_frac_helper(page, count, pages_number, mult);
 234 }
 235
 236 static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer,
 237                                        unsigned long count, void *data)
 238 {
 239         struct super_block *sb = data;
 240         struct ll_sb_info *sbi = ll_s2sbi(sb);
 241         int mult, rc, pages_number;
 242
 243         mult = 1 << (20 - CFS_PAGE_SHIFT);
 244         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 245         if (rc)
 246                 return rc;
 247
 248         /* Cap this at the current max readahead window size, the readahead
 249          * algorithm does this anyway so it's pointless to set it larger. */
 250         if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
 251                 CERROR("can't set max_read_ahead_whole_mb more than "
 252                        "max_read_ahead_mb: %lu\n",
 253                        sbi->ll_ra_info.ra_max_pages >> (20 - CFS_PAGE_SHIFT));
 254                 return -ERANGE;
 255         }
 256
 257         spin_lock(&sbi->ll_lock);
 258         sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
 259         spin_unlock(&sbi->ll_lock);
 260
 261         return count;
 262 }
 263
 264 static int ll_rd_max_cached_mb(char *page, char **start, off_t off,
 265                                int count, int *eof, void *data)
 266 {
 267         struct super_block *sb = data;
 268         struct ll_sb_info *sbi = ll_s2sbi(sb);
 269         long pages_number;
 270         int mult;
 271
 272         spin_lock(&sbi->ll_lock);
 273         pages_number = sbi->ll_async_page_max;
 274         spin_unlock(&sbi->ll_lock);
 275
 276         mult = 1 << (20 - CFS_PAGE_SHIFT);
 277         return lprocfs_read_frac_helper(page, count, pages_number, mult);;
 278 }
 279
 280 static int ll_wr_max_cached_mb(struct file *file, const char *buffer,
 281                                   unsigned long count, void *data)
 282 {
 283         struct super_block *sb = data;
 284         struct ll_sb_info *sbi = ll_s2sbi(sb);
 285         int mult, rc, pages_number;
 286
 287         mult = 1 << (20 - CFS_PAGE_SHIFT);
 288         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 289         if (rc)
 290                 return rc;
 291
 292         if (pages_number < 0 || pages_number > num_physpages) {
 293                 CERROR("can't set max cache more than %lu MB\n",
 294                         num_physpages >> (20 - CFS_PAGE_SHIFT));
 295                 return -ERANGE;
 296         }
 297
 298         spin_lock(&sbi->ll_lock);
 299         sbi->ll_async_page_max = pages_number ;
 300         spin_unlock(&sbi->ll_lock);
 301
 302         if (!sbi->ll_osc_exp)
 303                 /* Not set up yet, don't call llap_shrink_cache */
 304                 return count;
 305
 306         if (sbi->ll_async_page_count >= sbi->ll_async_page_max)
 307                 llap_shrink_cache(sbi, 0);
 308
 309         return count;
 310 }
 311
 312 static int ll_rd_checksum(char *page, char **start, off_t off,
 313                           int count, int *eof, void *data)
 314 {
 315         struct super_block *sb = data;
 316         struct ll_sb_info *sbi = ll_s2sbi(sb);
 317
 318         return snprintf(page, count, "%u\n",
 319                         (sbi->ll_flags & LL_SBI_LLITE_CHECKSUM) ? 1 : 0);
 320 }
 321
 322 static int ll_wr_checksum(struct file *file, const char *buffer,
 323                           unsigned long count, void *data)
 324 {
 325         struct super_block *sb = data;
 326         struct ll_sb_info *sbi = ll_s2sbi(sb);
 327         int val, rc;
 328
 329         if (!sbi->ll_osc_exp)
 330                 /* Not set up yet */
 331                 return -EAGAIN;
 332
 333         rc = lprocfs_write_helper(buffer, count, &val);
 334         if (rc)
 335                 return rc;
 336         if (val)
 337                 sbi->ll_flags |=  (LL_SBI_LLITE_CHECKSUM|LL_SBI_DATA_CHECKSUM);
 338         else
 339                 sbi->ll_flags &= ~(LL_SBI_LLITE_CHECKSUM|LL_SBI_DATA_CHECKSUM);
 340
 341         rc = obd_set_info_async(sbi->ll_osc_exp, strlen("checksum"), "checksum",
 342                                 sizeof(val), &val, NULL);
 343         if (rc)
 344                 CWARN("Failed to set OSC checksum flags: %d\n", rc);
 345
 346         return count;
 347 }
 348
 349 static int ll_rd_max_rw_chunk(char *page, char **start, off_t off,
 350                           int count, int *eof, void *data)
 351 {
 352         struct super_block *sb = data;
 353
 354         return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
 355 }
 356
 357 static int ll_wr_max_rw_chunk(struct file *file, const char *buffer,
 358                           unsigned long count, void *data)
 359 {
 360         struct super_block *sb = data;
 361         int rc, val;
 362
 363         rc = lprocfs_write_helper(buffer, count, &val);
 364         if (rc)
 365                 return rc;
 366         ll_s2sbi(sb)->ll_max_rw_chunk = val;
 367         return count;
 368 }
 369
 370 static int ll_rd_track_id(char *page, int count, void *data,
 371                           enum stats_track_type type)
 372 {
 373         struct super_block *sb = data;
 374
 375         if (ll_s2sbi(sb)->ll_stats_track_type == type) {
 376                 return snprintf(page, count, "%d\n",
 377                                 ll_s2sbi(sb)->ll_stats_track_id);
 378
 379         } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
 380                 return snprintf(page, count, "0 (all)\n");
 381         } else {
 382                 return snprintf(page, count, "untracked\n");
 383         }
 384 }
 385
 386 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
 387                           enum stats_track_type type)
 388 {
 389         struct super_block *sb = data;
 390         int rc, pid;
 391
 392         rc = lprocfs_write_helper(buffer, count, &pid);
 393         if (rc)
 394                 return rc;
 395         ll_s2sbi(sb)->ll_stats_track_id = pid;
 396         if (pid == 0)
 397                 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
 398         else
 399                 ll_s2sbi(sb)->ll_stats_track_type = type;
 400         lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
 401         return count;
 402 }
 403
 404 static int ll_rd_track_pid(char *page, char **start, off_t off,
 405                           int count, int *eof, void *data)
 406 {
 407         return (ll_rd_track_id(page, count, data, STATS_TRACK_PID));
 408 }
 409
 410 static int ll_wr_track_pid(struct file *file, const char *buffer,
 411                           unsigned long count, void *data)
 412 {
 413         return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID));
 414 }
 415
 416 static int ll_rd_track_ppid(char *page, char **start, off_t off,
 417                           int count, int *eof, void *data)
 418 {
 419         return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID));
 420 }
 421
 422 static int ll_wr_track_ppid(struct file *file, const char *buffer,
 423                           unsigned long count, void *data)
 424 {
 425         return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID));
 426 }
 427
 428 static int ll_rd_track_gid(char *page, char **start, off_t off,
 429                           int count, int *eof, void *data)
 430 {
 431         return (ll_rd_track_id(page, count, data, STATS_TRACK_GID));
 432 }
 433
 434 static int ll_wr_track_gid(struct file *file, const char *buffer,
 435                           unsigned long count, void *data)
 436 {
 437         return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID));
 438 }
 439
 440 static int ll_rd_contention_time(char *page, char **start, off_t off,
 441                                  int count, int *eof, void *data)
 442 {
 443         struct super_block *sb = data;
 444
 445         *eof = 1;
 446         return snprintf(page, count, "%u\n", ll_s2sbi(sb)->ll_contention_time);
 447
 448 }
 449
 450 static int ll_wr_contention_time(struct file *file, const char *buffer,
 451                                  unsigned long count, void *data)
 452 {
 453         struct super_block *sb = data;
 454         struct ll_sb_info *sbi = ll_s2sbi(sb);
 455
 456         return lprocfs_write_helper(buffer, count,&sbi->ll_contention_time) ?:
 457                 count;
 458 }
 459
 460 static int ll_rd_statahead_count(char *page, char **start, off_t off,
 461                                  int count, int *eof, void *data)
 462 {
 463         struct super_block *sb = data;
 464         struct ll_sb_info *sbi = ll_s2sbi(sb);
 465
 466         return snprintf(page, count, "%u\n", sbi->ll_sa_count);
 467 }
 468
 469 static int ll_rd_statahead_max(char *page, char **start, off_t off,
 470                                int count, int *eof, void *data)
 471 {
 472         struct super_block *sb = data;
 473         struct ll_sb_info *sbi = ll_s2sbi(sb);
 474
 475         return snprintf(page, count, "%u\n", sbi->ll_sa_max);
 476 }
 477
 478 static int ll_wr_statahead_max(struct file *file, const char *buffer,
 479                                unsigned long count, void *data)
 480 {
 481         struct super_block *sb = data;
 482         struct ll_sb_info *sbi = ll_s2sbi(sb);
 483         int val, rc;
 484
 485         rc = lprocfs_write_helper(buffer, count, &val);
 486         if (rc)
 487                 return rc;
 488         if (val >= 0 && val <= LL_STATAHEAD_MAX)
 489                 sbi->ll_sa_max = val;
 490         else
 491                 CERROR("Bad statahead_max value %d. Valid values are in the "
 492                        "range [0, %d]\n", val, LL_STATAHEAD_MAX);
 493
 494         return count;
 495 }
 496
 497 static int ll_rd_statahead_stats(char *page, char **start, off_t off,
 498                                  int count, int *eof, void *data)
 499 {
 500         struct super_block *sb = data;
 501         struct ll_sb_info *sbi = ll_s2sbi(sb);
 502
 503         return snprintf(page, count,
 504                         "statahead wrong: %u\n"
 505                         "statahead total: %u\n"
 506                         "ls blocked:      %llu\n"
 507                         "ls total:        %llu\n",
 508                         sbi->ll_sa_wrong, sbi->ll_sa_total,
 509                         sbi->ll_sa_blocked,
 510                         sbi->ll_sa_blocked + sbi->ll_sa_cached);
 511 }
 512
 513 static struct lprocfs_vars lprocfs_obd_vars[] = {
 514         { "uuid",         ll_rd_sb_uuid,          0, 0 },
 515         //{ "mntpt_path",   ll_rd_path,             0, 0 },
 516         { "fstype",       ll_rd_fstype,           0, 0 },
 517         { "blocksize",    ll_rd_blksize,          0, 0 },
 518         { "kbytestotal",  ll_rd_kbytestotal,      0, 0 },
 519         { "kbytesfree",   ll_rd_kbytesfree,       0, 0 },
 520         { "kbytesavail",  ll_rd_kbytesavail,      0, 0 },
 521         { "filestotal",   ll_rd_filestotal,       0, 0 },
 522         { "filesfree",    ll_rd_filesfree,        0, 0 },
 523         //{ "filegroups",   lprocfs_rd_filegroups,  0, 0 },
 524         { "max_read_ahead_mb", ll_rd_max_readahead_mb,
 525                                ll_wr_max_readahead_mb, 0 },
 526         { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb,
 527                                      ll_wr_max_read_ahead_whole_mb, 0 },
 528         { "max_cached_mb",  ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 },
 529         { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 },
 530         { "max_rw_chunk",   ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 },
 531         { "stats_track_pid",  ll_rd_track_pid, ll_wr_track_pid, 0 },
 532         { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 },
 533         { "stats_track_gid",  ll_rd_track_gid, ll_wr_track_gid, 0 },
 534         { "contention_seconds", ll_rd_contention_time, ll_wr_contention_time, 0},
 535         { "statahead_count", ll_rd_statahead_count, 0, 0 },
 536         { "statahead_max",   ll_rd_statahead_max, ll_wr_statahead_max, 0 },
 537         { "statahead_stats", ll_rd_statahead_stats, 0, 0 },
 538         { 0 }
 539 };
 540
 541 #define MAX_STRING_SIZE 128
 542
 543 struct llite_file_opcode {
 544         __u32       opcode;
 545         __u32       type;
 546         const char *opname;
 547 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
 548         /* file operation */
 549         { LPROC_LL_DIRTY_HITS,     LPROCFS_TYPE_REGS, "dirty_pages_hits" },
 550         { LPROC_LL_DIRTY_MISSES,   LPROCFS_TYPE_REGS, "dirty_pages_misses" },
 551         { LPROC_LL_WB_WRITEPAGE,   LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 552                                    "writeback_from_writepage" },
 553         { LPROC_LL_WB_PRESSURE,    LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 554                                    "writeback_from_pressure" },
 555         { LPROC_LL_WB_OK,          LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 556                                    "writeback_ok_pages" },
 557         { LPROC_LL_WB_FAIL,        LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 558                                    "writeback_failed_pages" },
 559         { LPROC_LL_READ_BYTES,     LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
 560                                    "read_bytes" },
 561         { LPROC_LL_WRITE_BYTES,    LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
 562                                    "write_bytes" },
 563         { LPROC_LL_BRW_READ,       LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 564                                    "brw_read" },
 565         { LPROC_LL_BRW_WRITE,      LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 566                                    "brw_write" },
 567
 568         { LPROC_LL_IOCTL,          LPROCFS_TYPE_REGS, "ioctl" },
 569         { LPROC_LL_OPEN,           LPROCFS_TYPE_REGS, "open" },
 570         { LPROC_LL_RELEASE,        LPROCFS_TYPE_REGS, "close" },
 571         { LPROC_LL_MAP,            LPROCFS_TYPE_REGS, "mmap" },
 572         { LPROC_LL_LLSEEK,         LPROCFS_TYPE_REGS, "seek" },
 573         { LPROC_LL_FSYNC,          LPROCFS_TYPE_REGS, "fsync" },
 574         /* inode operation */
 575         { LPROC_LL_SETATTR,        LPROCFS_TYPE_REGS, "setattr" },
 576         { LPROC_LL_TRUNC,          LPROCFS_TYPE_REGS, "truncate" },
 577         { LPROC_LL_FLOCK,          LPROCFS_TYPE_REGS, "flock" },
 578 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
 579         { LPROC_LL_GETATTR,        LPROCFS_TYPE_REGS, "getattr" },
 580 #else
 581         { LPROC_LL_REVALIDATE,     LPROCFS_TYPE_REGS, "getattr" },
 582 #endif
 583         /* special inode operation */
 584         { LPROC_LL_STAFS,          LPROCFS_TYPE_REGS, "statfs" },
 585         { LPROC_LL_ALLOC_INODE,    LPROCFS_TYPE_REGS, "alloc_inode" },
 586         { LPROC_LL_SETXATTR,       LPROCFS_TYPE_REGS, "setxattr" },
 587         { LPROC_LL_GETXATTR,       LPROCFS_TYPE_REGS, "getxattr" },
 588         { LPROC_LL_LISTXATTR,      LPROCFS_TYPE_REGS, "listxattr" },
 589         { LPROC_LL_REMOVEXATTR,    LPROCFS_TYPE_REGS, "removexattr" },
 590         { LPROC_LL_INODE_PERM,     LPROCFS_TYPE_REGS, "inode_permission" },
 591         { LPROC_LL_DIRECT_READ,    LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 592                                    "direct_read" },
 593         { LPROC_LL_DIRECT_WRITE,   LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
 594                                    "direct_write" },
 595         { LPROC_LL_LOCKLESS_READ,  LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
 596                                    "lockless_read_bytes" },
 597         { LPROC_LL_LOCKLESS_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
 598                                    "lockless_write_bytes" },
 599
 600 };
 601
 602 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
 603 {
 604         if (!sbi->ll_stats)
 605                 return;
 606         if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
 607                 lprocfs_counter_add(sbi->ll_stats, op, count);
 608         else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
 609                  sbi->ll_stats_track_id == current->pid)
 610                 lprocfs_counter_add(sbi->ll_stats, op, count);
 611         else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
 612                  sbi->ll_stats_track_id == current->p_pptr->pid)
 613                 lprocfs_counter_add(sbi->ll_stats, op, count);
 614         else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
 615                  sbi->ll_stats_track_id == current->gid)
 616                 lprocfs_counter_add(sbi->ll_stats, op, count);
 617 }
 618 EXPORT_SYMBOL(ll_stats_ops_tally);
 619
 620 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
 621                                 struct super_block *sb, char *osc, char *mdc)
 622 {
 623         struct lprocfs_vars lvars[2];
 624         struct lustre_sb_info *lsi = s2lsi(sb);
 625         struct ll_sb_info *sbi = ll_s2sbi(sb);
 626         struct obd_device *obd;
 627         char name[MAX_STRING_SIZE + 1], *ptr;
 628         int err, id, len;
 629         struct proc_dir_entry *entry;
 630         ENTRY;
 631
 632         memset(lvars, 0, sizeof(lvars));
 633
 634         name[MAX_STRING_SIZE] = '\0';
 635         lvars[0].name = name;
 636
 637         LASSERT(sbi != NULL);
 638         LASSERT(mdc != NULL);
 639         LASSERT(osc != NULL);
 640
 641         /* Get fsname */
 642         len = strlen(lsi->lsi_lmd->lmd_profile);
 643         ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
 644         if (ptr && (strcmp(ptr, "-client") == 0))
 645                 len -= 7;
 646
 647         /* Mount info */
 648         snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
 649                  lsi->lsi_lmd->lmd_profile, sb);
 650
 651         sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
 652         if (IS_ERR(sbi->ll_proc_root)) {
 653                 err = PTR_ERR(sbi->ll_proc_root);
 654                 sbi->ll_proc_root = NULL;
 655                 RETURN(err);
 656         }
 657
 658         entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root);
 659         if (entry == NULL)
 660                 GOTO(out, err = -ENOMEM);
 661         entry->proc_fops = &llite_dump_pgcache_fops;
 662         entry->data = sbi;
 663
 664         entry = create_proc_entry("read_ahead_stats", 0644, sbi->ll_proc_root);
 665         if (entry == NULL)
 666                 GOTO(out, err = -ENOMEM);
 667         entry->proc_fops = &ll_ra_stats_fops;
 668         entry->data = sbi;
 669
 670         entry = create_proc_entry("extents_stats", 0644, sbi->ll_proc_root);
 671         if (entry == NULL)
 672                  GOTO(out, err = -ENOMEM);
 673         entry->proc_fops = &ll_rw_extents_stats_fops;
 674         entry->data = sbi;
 675
 676         entry = create_proc_entry("extents_stats_per_process", 0644,
 677                                   sbi->ll_proc_root);
 678         if (entry == NULL)
 679                  GOTO(out, err = -ENOMEM);
 680         entry->proc_fops = &ll_rw_extents_stats_pp_fops;
 681         entry->data = sbi;
 682
 683         entry = create_proc_entry("offset_stats", 0644, sbi->ll_proc_root);
 684         if (entry == NULL)
 685                 GOTO(out, err = -ENOMEM);
 686         entry->proc_fops = &ll_rw_offset_stats_fops;
 687         entry->data = sbi;
 688
 689         /* File operations stats */
 690         sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
 691                                             LPROCFS_STATS_FLAG_PERCPU);
 692         if (sbi->ll_stats == NULL)
 693                 GOTO(out, err = -ENOMEM);
 694         /* do counter init */
 695         for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
 696                 __u32 type = llite_opcode_table[id].type;
 697                 void *ptr = NULL;
 698                 if (type & LPROCFS_TYPE_REGS)
 699                         ptr = "regs";
 700                 else if (type & LPROCFS_TYPE_BYTES)
 701                         ptr = "bytes";
 702                 else if (type & LPROCFS_TYPE_PAGES)
 703                         ptr = "pages";
 704                 lprocfs_counter_init(sbi->ll_stats,
 705                                      llite_opcode_table[id].opcode,
 706                                      (type & LPROCFS_CNTR_AVGMINMAX),
 707                                      llite_opcode_table[id].opname, ptr);
 708         }
 709         err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
 710         if (err)
 711                 GOTO(out, err);
 712
 713         err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_obd_vars, sb);
 714         if (err)
 715                 GOTO(out, err);
 716
 717         /* MDC info */
 718         obd = class_name2obd(mdc);
 719
 720         LASSERT(obd != NULL);
 721         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 722         LASSERT(obd->obd_type->typ_name != NULL);
 723
 724         snprintf(name, MAX_STRING_SIZE, "%s/common_name",
 725                  obd->obd_type->typ_name);
 726         lvars[0].read_fptr = lprocfs_rd_name;
 727         err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
 728         if (err)
 729                 GOTO(out, err);
 730
 731         snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
 732         lvars[0].read_fptr = lprocfs_rd_uuid;
 733         err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
 734         if (err)
 735                 GOTO(out, err);
 736
 737         /* OSC */
 738         obd = class_name2obd(osc);
 739
 740         LASSERT(obd != NULL);
 741         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 742         LASSERT(obd->obd_type->typ_name != NULL);
 743
 744         snprintf(name, MAX_STRING_SIZE, "%s/common_name",
 745                  obd->obd_type->typ_name);
 746         lvars[0].read_fptr = lprocfs_rd_name;
 747         err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
 748         if (err)
 749                 GOTO(out, err);
 750
 751         snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
 752         lvars[0].read_fptr = lprocfs_rd_uuid;
 753         err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
 754 out:
 755         if (err) {
 756                 lprocfs_remove(&sbi->ll_proc_root);
 757                 lprocfs_free_stats(&sbi->ll_stats);
 758         }
 759         RETURN(err);
 760 }
 761
 762 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
 763 {
 764         if (sbi->ll_proc_root) {
 765                 lprocfs_remove(&sbi->ll_proc_root);
 766                 lprocfs_free_stats(&sbi->ll_stats);
 767         }
 768 }
 769 #undef MAX_STRING_SIZE
 770
 771 #define seq_page_flag(seq, page, flag, has_flags) do {                  \
 772                 if (test_bit(PG_##flag, &(page)->flags)) {              \
 773                         if (!has_flags)                                 \
 774                                 has_flags = 1;                          \
 775                         else                                            \
 776                                 seq_putc(seq, '|');                     \
 777                         seq_puts(seq, #flag);                           \
 778                 }                                                       \
 779         } while(0);
 780
 781 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
 782 {
 783         struct ll_async_page *dummy_llap = seq->private;
 784
 785         if (dummy_llap->llap_magic == 2)
 786                 return NULL;
 787
 788         return (void *)1;
 789 }
 790
 791 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
 792 {
 793         struct ll_async_page *llap, *dummy_llap = seq->private;
 794         struct ll_sb_info *sbi = dummy_llap->llap_cookie;
 795
 796         /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
 797          * it in our own state */
 798         if (dummy_llap->llap_magic == 0) {
 799                 seq_printf(seq, "gener |  llap  cookie  origin wq du wb | page "
 800                                 "inode index count [ page flags ]\n");
 801                 return 0;
 802         }
 803
 804         spin_lock(&sbi->ll_lock);
 805
 806         llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
 807         if (llap != NULL)  {
 808                 int has_flags = 0;
 809                 struct page *page = llap->llap_page;
 810
 811                 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
 812                          llap->llap_origin);
 813
 814                 seq_printf(seq," %5lu | %p %p %s %s %s %s | %p %lu/%u(%p) "
 815                            "%lu %u [",
 816                            sbi->ll_pglist_gen,
 817                            llap, llap->llap_cookie,
 818                            llap_origins[llap->llap_origin],
 819                            llap->llap_write_queued ? "wq" : "- ",
 820                            llap->llap_defer_uptodate ? "du" : "- ",
 821                            PageWriteback(page) ? "wb" : "-",
 822                            page, page->mapping->host->i_ino,
 823                            page->mapping->host->i_generation,
 824                            page->mapping->host, page->index,
 825                            page_count(page));
 826                 seq_page_flag(seq, page, locked, has_flags);
 827                 seq_page_flag(seq, page, error, has_flags);
 828                 seq_page_flag(seq, page, referenced, has_flags);
 829                 seq_page_flag(seq, page, uptodate, has_flags);
 830                 seq_page_flag(seq, page, dirty, has_flags);
 831 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,12))
 832                 seq_page_flag(seq, page, highmem, has_flags);
 833 #endif
 834                 seq_page_flag(seq, page, writeback, has_flags);
 835                 if (!has_flags)
 836                         seq_puts(seq, "-]\n");
 837                 else
 838                         seq_puts(seq, "]\n");
 839         }
 840
 841         spin_unlock(&sbi->ll_lock);
 842
 843         return 0;
 844 }
 845
 846 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
 847                                          loff_t *pos)
 848 {
 849         struct ll_async_page *llap, *dummy_llap = seq->private;
 850         struct ll_sb_info *sbi = dummy_llap->llap_cookie;
 851
 852         /* bail if we just displayed the banner */
 853         if (dummy_llap->llap_magic == 0) {
 854                 dummy_llap->llap_magic = 1;
 855                 return dummy_llap;
 856         }
 857
 858         /* we've just displayed the llap that is after us in the list.
 859          * we advance to a position beyond it, returning null if there
 860          * isn't another llap in the list beyond that new position. */
 861         spin_lock(&sbi->ll_lock);
 862         llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
 863         list_del_init(&dummy_llap->llap_pglist_item);
 864         if (llap) {
 865                 list_add(&dummy_llap->llap_pglist_item,&llap->llap_pglist_item);
 866                 llap =llite_pglist_next_llap(sbi,&dummy_llap->llap_pglist_item);
 867         }
 868         spin_unlock(&sbi->ll_lock);
 869
 870         ++*pos;
 871         if (llap == NULL) {
 872                 dummy_llap->llap_magic = 2;
 873                 return NULL;
 874         }
 875         return dummy_llap;
 876 }
 877
 878 static void null_stop(struct seq_file *seq, void *v)
 879 {
 880 }
 881
 882 struct seq_operations llite_dump_pgcache_seq_sops = {
 883         .start = llite_dump_pgcache_seq_start,
 884         .stop = null_stop,
 885         .next = llite_dump_pgcache_seq_next,
 886         .show = llite_dump_pgcache_seq_show,
 887 };
 888
 889 /* we're displaying llaps in a list_head list.  we don't want to hold a lock
 890  * while we walk the entire list, and we don't want to have to seek into
 891  * the right position in the list as an app advances with many syscalls.  we
 892  * allocate a dummy llap and hang it off file->private.  its position in
 893  * the list records where the app is currently displaying.  this way our
 894  * seq .start and .stop don't actually do anything.  .next returns null
 895  * when the dummy hits the end of the list which eventually leads to .release
 896  * where we tear down.  this kind of displaying is super-racey, so we put
 897  * a generation counter on the list so the output shows when the list
 898  * changes between reads.
 899  */
 900 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
 901 {
 902         struct proc_dir_entry *dp = PDE(inode);
 903         struct ll_async_page *dummy_llap;
 904         struct seq_file *seq;
 905         struct ll_sb_info *sbi = dp->data;
 906         int rc = -ENOMEM;
 907
 908         LPROCFS_ENTRY_AND_CHECK(dp);
 909
 910         OBD_ALLOC_PTR_WAIT(dummy_llap);
 911         if (dummy_llap == NULL)
 912                 GOTO(out, rc);
 913
 914         dummy_llap->llap_page = NULL;
 915         dummy_llap->llap_cookie = sbi;
 916         dummy_llap->llap_magic = 0;
 917
 918         rc = seq_open(file, &llite_dump_pgcache_seq_sops);
 919         if (rc) {
 920                 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
 921                 GOTO(out, rc);
 922         }
 923         seq = file->private_data;
 924         seq->private = dummy_llap;
 925
 926         spin_lock(&sbi->ll_lock);
 927         list_add(&dummy_llap->llap_pglist_item, &sbi->ll_pglist);
 928         spin_unlock(&sbi->ll_lock);
 929
 930 out:
 931         if (rc)
 932                 LPROCFS_EXIT();
 933         return rc;
 934 }
 935
 936 static int llite_dump_pgcache_seq_release(struct inode *inode,
 937                                           struct file *file)
 938 {
 939         struct seq_file *seq = file->private_data;
 940         struct ll_async_page *dummy_llap = seq->private;
 941         struct ll_sb_info *sbi = dummy_llap->llap_cookie;
 942
 943         spin_lock(&sbi->ll_lock);
 944         if (!list_empty(&dummy_llap->llap_pglist_item))
 945                 list_del_init(&dummy_llap->llap_pglist_item);
 946         spin_unlock(&sbi->ll_lock);
 947         OBD_FREE(dummy_llap, sizeof(*dummy_llap));
 948
 949         return lprocfs_seq_release(inode, file);
 950 }
 951
 952 struct file_operations llite_dump_pgcache_fops = {
 953         .owner   = THIS_MODULE,
 954         .open    = llite_dump_pgcache_seq_open,
 955         .read    = seq_read,
 956         .release = llite_dump_pgcache_seq_release,
 957 };
 958
 959 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
 960 {
 961         struct timeval now;
 962         struct ll_sb_info *sbi = seq->private;
 963         struct ll_ra_info *ra = &sbi->ll_ra_info;
 964         int i;
 965         static char *ra_stat_strings[] = {
 966                 [RA_STAT_HIT] = "hits",
 967                 [RA_STAT_MISS] = "misses",
 968                 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
 969                 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
 970                 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
 971                 [RA_STAT_FAILED_MATCH] = "failed lock match",
 972                 [RA_STAT_DISCARDED] = "read but discarded",
 973                 [RA_STAT_ZERO_LEN] = "zero length file",
 974                 [RA_STAT_ZERO_WINDOW] = "zero size window",
 975                 [RA_STAT_EOF] = "read-ahead to EOF",
 976                 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
 977                 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
 978         };
 979
 980         do_gettimeofday(&now);
 981
 982         spin_lock(&sbi->ll_lock);
 983
 984         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 985                    now.tv_sec, now.tv_usec);
 986         seq_printf(seq, "pending issued pages:           %lu\n",
 987                    ra->ra_cur_pages);
 988
 989         for(i = 0; i < _NR_RA_STAT; i++)
 990                 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
 991                            ra->ra_stats[i]);
 992
 993         spin_unlock(&sbi->ll_lock);
 994
 995         return 0;
 996 }
 997
 998 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
 999                                        size_t len, loff_t *off)
1000 {
1001         struct seq_file *seq = file->private_data;
1002         struct ll_sb_info *sbi = seq->private;
1003         struct ll_ra_info *ra = &sbi->ll_ra_info;
1004
1005         spin_lock(&sbi->ll_lock);
1006         memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
1007         spin_unlock(&sbi->ll_lock);
1008
1009         return len;
1010 }
1011
1012 LPROC_SEQ_FOPS(ll_ra_stats);
1013
1014 #define pct(a,b) (b ? a * 100 / b : 0)
1015
1016 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1017                                    struct seq_file *seq, int which)
1018 {
1019         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1020         unsigned long start, end, r, w;
1021         char *unitp = "KMGTPEZY";
1022         int i, units = 10;
1023         struct per_process_info *pp_info = &io_extents->pp_extents[which];
1024
1025         read_cum = 0;
1026         write_cum = 0;
1027         start = 0;
1028
1029         for(i = 0; i < LL_HIST_MAX; i++) {
1030                 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1031                 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1032         }
1033
1034         for(i = 0; i < LL_HIST_MAX; i++) {
1035                 r = pp_info->pp_r_hist.oh_buckets[i];
1036                 w = pp_info->pp_w_hist.oh_buckets[i];
1037                 read_cum += r;
1038                 write_cum += w;
1039                 end = 1 << (i + LL_HIST_START - units);
1040                 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu  | "
1041                            "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1042                            (i == LL_HIST_MAX - 1) ? '+' : ' ',
1043                            r, pct(r, read_tot), pct(read_cum, read_tot),
1044                            w, pct(w, write_tot), pct(write_cum, write_tot));
1045                 start = end;
1046                 if (start == 1<<10) {
1047                         start = 1;
1048                         units += 10;
1049                         unitp++;
1050                 }
1051                 if (read_cum == read_tot && write_cum == write_tot)
1052                         break;
1053         }
1054 }
1055
1056 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1057 {
1058         struct timeval now;
1059         struct ll_sb_info *sbi = seq->private;
1060         struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1061         int k;
1062
1063         do_gettimeofday(&now);
1064
1065         if (!sbi->ll_rw_stats_on) {
1066                 seq_printf(seq, "Disabled\n"
1067                                 "Write anything in this file to activate\n");
1068                 return 0;
1069         }
1070         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
1071                    now.tv_sec, now.tv_usec);
1072         seq_printf(seq, "%15s %19s       | %20s\n", " ", "read", "write");
1073         seq_printf(seq, "%13s   %14s %4s %4s  | %14s %4s %4s\n",
1074                    "extents", "calls", "%", "cum%",
1075                    "calls", "%", "cum%");
1076         spin_lock(&sbi->ll_pp_extent_lock);
1077         for(k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1078                 if(io_extents->pp_extents[k].pid != 0) {
1079                         seq_printf(seq, "\nPID: %d\n",
1080                                    io_extents->pp_extents[k].pid);
1081                         ll_display_extents_info(io_extents, seq, k);
1082                 }
1083         }
1084         spin_unlock(&sbi->ll_pp_extent_lock);
1085         return 0;
1086 }
1087
1088 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1089                                                 const char *buf, size_t len,
1090                                                 loff_t *off)
1091 {
1092         struct seq_file *seq = file->private_data;
1093         struct ll_sb_info *sbi = seq->private;
1094         struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1095         int i;
1096
1097         sbi->ll_rw_stats_on = 1;
1098         spin_lock(&sbi->ll_pp_extent_lock);
1099         for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1100                 io_extents->pp_extents[i].pid = 0;
1101                 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1102                 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1103         }
1104         spin_unlock(&sbi->ll_pp_extent_lock);
1105         return len;
1106 }
1107
1108 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1109
1110 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1111 {
1112         struct timeval now;
1113         struct ll_sb_info *sbi = seq->private;
1114         struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1115
1116         do_gettimeofday(&now);
1117
1118         if (!sbi->ll_rw_stats_on) {
1119                 seq_printf(seq, "Disabled\n"
1120                                 "Write anything in this file to activate\n");
1121                 return 0;
1122         }
1123         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
1124                    now.tv_sec, now.tv_usec);
1125
1126         seq_printf(seq, "%15s %19s       | %20s\n", " ", "read", "write");
1127         seq_printf(seq, "%13s   %14s %4s %4s  | %14s %4s %4s\n",
1128                    "extents", "calls", "%", "cum%",
1129                    "calls", "%", "cum%");
1130         spin_lock(&sbi->ll_lock);
1131         ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1132         spin_unlock(&sbi->ll_lock);
1133
1134         return 0;
1135 }
1136
1137 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1138                                         size_t len, loff_t *off)
1139 {
1140         struct seq_file *seq = file->private_data;
1141         struct ll_sb_info *sbi = seq->private;
1142         struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1143         int i;
1144
1145         sbi->ll_rw_stats_on = 1;
1146         spin_lock(&sbi->ll_pp_extent_lock);
1147         for(i = 0; i <= LL_PROCESS_HIST_MAX; i++)
1148         {
1149                 io_extents->pp_extents[i].pid = 0;
1150                 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1151                 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1152         }
1153         spin_unlock(&sbi->ll_pp_extent_lock);
1154
1155         return len;
1156 }
1157
1158 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1159
1160 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
1161                                *file, size_t count, int rw)
1162 {
1163         int i, cur = -1;
1164         struct ll_rw_process_info *process;
1165         struct ll_rw_process_info *offset;
1166         int *off_count = &sbi->ll_rw_offset_entry_count;
1167         int *process_count = &sbi->ll_offset_process_count;
1168         struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1169
1170         if(!sbi->ll_rw_stats_on)
1171                 return;
1172         process = sbi->ll_rw_process_info;
1173         offset = sbi->ll_rw_offset_info;
1174
1175         spin_lock(&sbi->ll_pp_extent_lock);
1176         /* Extent statistics */
1177         for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1178                 if(io_extents->pp_extents[i].pid == pid) {
1179                         cur = i;
1180                         break;
1181                 }
1182         }
1183
1184         if (cur == -1) {
1185                 /* new process */
1186                 sbi->ll_extent_process_count =
1187                         (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1188                 cur = sbi->ll_extent_process_count;
1189                 io_extents->pp_extents[cur].pid = pid;
1190                 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1191                 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1192         }
1193
1194         for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1195              (i < (LL_HIST_MAX - 1)); i++);
1196         if (rw == 0) {
1197                 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1198                 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1199         } else {
1200                 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1201                 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1202         }
1203         spin_unlock(&sbi->ll_pp_extent_lock);
1204
1205         spin_lock(&sbi->ll_process_lock);
1206         /* Offset statistics */
1207         for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1208                 if (process[i].rw_pid == pid) {
1209                         if (process[i].rw_last_file != file) {
1210                                 process[i].rw_range_start = file->f_pos;
1211                                 process[i].rw_last_file_pos =
1212                                                         file->f_pos + count;
1213                                 process[i].rw_smallest_extent = count;
1214                                 process[i].rw_largest_extent = count;
1215                                 process[i].rw_offset = 0;
1216                                 process[i].rw_last_file = file;
1217                                 spin_unlock(&sbi->ll_process_lock);
1218                                 return;
1219                         }
1220                         if (process[i].rw_last_file_pos != file->f_pos) {
1221                                 *off_count =
1222                                     (*off_count + 1) % LL_OFFSET_HIST_MAX;
1223                                 offset[*off_count].rw_op = process[i].rw_op;
1224                                 offset[*off_count].rw_pid = pid;
1225                                 offset[*off_count].rw_range_start =
1226                                         process[i].rw_range_start;
1227                                 offset[*off_count].rw_range_end =
1228                                         process[i].rw_last_file_pos;
1229                                 offset[*off_count].rw_smallest_extent =
1230                                         process[i].rw_smallest_extent;
1231                                 offset[*off_count].rw_largest_extent =
1232                                         process[i].rw_largest_extent;
1233                                 offset[*off_count].rw_offset =
1234                                         process[i].rw_offset;
1235                                 process[i].rw_op = rw;
1236                                 process[i].rw_range_start = file->f_pos;
1237                                 process[i].rw_smallest_extent = count;
1238                                 process[i].rw_largest_extent = count;
1239                                 process[i].rw_offset = file->f_pos -
1240                                         process[i].rw_last_file_pos;
1241                         }
1242                         if(process[i].rw_smallest_extent > count)
1243                                 process[i].rw_smallest_extent = count;
1244                         if(process[i].rw_largest_extent < count)
1245                                 process[i].rw_largest_extent = count;
1246                         process[i].rw_last_file_pos = file->f_pos + count;
1247                         spin_unlock(&sbi->ll_process_lock);
1248                         return;
1249                 }
1250         }
1251         *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1252         process[*process_count].rw_pid = pid;
1253         process[*process_count].rw_op = rw;
1254         process[*process_count].rw_range_start = file->f_pos;
1255         process[*process_count].rw_last_file_pos = file->f_pos + count;
1256         process[*process_count].rw_smallest_extent = count;
1257         process[*process_count].rw_largest_extent = count;
1258         process[*process_count].rw_offset = 0;
1259         process[*process_count].rw_last_file = file;
1260         spin_unlock(&sbi->ll_process_lock);
1261 }
1262
1263 char lpszt[] = LPSZ;
1264
1265 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1266 {
1267         struct timeval now;
1268         struct ll_sb_info *sbi = seq->private;
1269         struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1270         struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1271         char format[50];
1272         int i;
1273
1274         do_gettimeofday(&now);
1275
1276         if (!sbi->ll_rw_stats_on) {
1277                 seq_printf(seq, "Disabled\n"
1278                                 "Write anything in this file to activate\n");
1279                 return 0;
1280         }
1281         spin_lock(&sbi->ll_process_lock);
1282
1283         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
1284                    now.tv_sec, now.tv_usec);
1285         seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1286                    "R/W", "PID", "RANGE START", "RANGE END",
1287                    "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1288         sprintf(format, "%s%s%s%s%s\n",
1289                 "%3c %10d %14Lu %14Lu %17", lpszt+1, " %17", lpszt+1, " %14Ld");
1290         /* We stored the discontiguous offsets here; print them first */
1291         for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1292                 if (offset[i].rw_pid != 0)
1293                         /* Is there a way to snip the '%' off of LPSZ? */
1294                         seq_printf(seq, format,
1295                                    offset[i].rw_op ? 'W' : 'R',
1296                                    offset[i].rw_pid,
1297                                    offset[i].rw_range_start,
1298                                    offset[i].rw_range_end,
1299                                    offset[i].rw_smallest_extent,
1300                                    offset[i].rw_largest_extent,
1301                                    offset[i].rw_offset);
1302         }
1303         /* Then print the current offsets for each process */
1304         for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1305                 if (process[i].rw_pid != 0)
1306                         seq_printf(seq, format,
1307                                    process[i].rw_op ? 'W' : 'R',
1308                                    process[i].rw_pid,
1309                                    process[i].rw_range_start,
1310                                    process[i].rw_last_file_pos,
1311                                    process[i].rw_smallest_extent,
1312                                    process[i].rw_largest_extent,
1313                                    process[i].rw_offset);
1314         }
1315         spin_unlock(&sbi->ll_process_lock);
1316
1317         return 0;
1318 }
1319
1320 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1321                                        size_t len, loff_t *off)
1322 {
1323         struct seq_file *seq = file->private_data;
1324         struct ll_sb_info *sbi = seq->private;
1325         struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1326         struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1327
1328         sbi->ll_rw_stats_on = 1;
1329
1330         spin_lock(&sbi->ll_process_lock);
1331         sbi->ll_offset_process_count = 0;
1332         sbi->ll_rw_offset_entry_count = 0;
1333         memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1334                LL_PROCESS_HIST_MAX);
1335         memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1336                LL_OFFSET_HIST_MAX);
1337         spin_unlock(&sbi->ll_process_lock);
1338
1339         return len;
1340 }
1341
1342 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1343
1344 LPROCFS_INIT_VARS(llite, NULL, lprocfs_obd_vars)
1345 #endif /* LPROCFS */