linux/fs/gfs2/trace_gfs2.h
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   1#undef TRACE_SYSTEM
   2#define TRACE_SYSTEM gfs2
   3
   4#if !defined(_TRACE_GFS2_H) || defined(TRACE_HEADER_MULTI_READ)
   5#define _TRACE_GFS2_H
   6
   7#include <linux/tracepoint.h>
   8
   9#include <linux/fs.h>
  10#include <linux/buffer_head.h>
  11#include <linux/dlmconstants.h>
  12#include <linux/gfs2_ondisk.h>
  13#include <linux/writeback.h>
  14#include <linux/ktime.h>
  15#include "incore.h"
  16#include "glock.h"
  17
  18#define dlm_state_name(nn) { DLM_LOCK_##nn, #nn }
  19#define glock_trace_name(x) __print_symbolic(x,         \
  20                            dlm_state_name(IV),         \
  21                            dlm_state_name(NL),         \
  22                            dlm_state_name(CR),         \
  23                            dlm_state_name(CW),         \
  24                            dlm_state_name(PR),         \
  25                            dlm_state_name(PW),         \
  26                            dlm_state_name(EX))
  27
  28#define block_state_name(x) __print_symbolic(x,                 \
  29                            { GFS2_BLKST_FREE, "free" },        \
  30                            { GFS2_BLKST_USED, "used" },        \
  31                            { GFS2_BLKST_DINODE, "dinode" },    \
  32                            { GFS2_BLKST_UNLINKED, "unlinked" })
  33
  34#define show_glock_flags(flags) __print_flags(flags, "",        \
  35        {(1UL << GLF_LOCK),                     "l" },          \
  36        {(1UL << GLF_DEMOTE),                   "D" },          \
  37        {(1UL << GLF_PENDING_DEMOTE),           "d" },          \
  38        {(1UL << GLF_DEMOTE_IN_PROGRESS),       "p" },          \
  39        {(1UL << GLF_DIRTY),                    "y" },          \
  40        {(1UL << GLF_LFLUSH),                   "f" },          \
  41        {(1UL << GLF_INVALIDATE_IN_PROGRESS),   "i" },          \
  42        {(1UL << GLF_REPLY_PENDING),            "r" },          \
  43        {(1UL << GLF_INITIAL),                  "I" },          \
  44        {(1UL << GLF_FROZEN),                   "F" },          \
  45        {(1UL << GLF_QUEUED),                   "q" },          \
  46        {(1UL << GLF_LRU),                      "L" },          \
  47        {(1UL << GLF_OBJECT),                   "o" },          \
  48        {(1UL << GLF_BLOCKING),                 "b" })
  49
  50#ifndef NUMPTY
  51#define NUMPTY
  52static inline u8 glock_trace_state(unsigned int state)
  53{
  54        switch(state) {
  55        case LM_ST_SHARED:
  56                return DLM_LOCK_PR;
  57        case LM_ST_DEFERRED:
  58                return DLM_LOCK_CW;
  59        case LM_ST_EXCLUSIVE:
  60                return DLM_LOCK_EX;
  61        }
  62        return DLM_LOCK_NL;
  63}
  64#endif
  65
  66/* Section 1 - Locking
  67 *
  68 * Objectives:
  69 * Latency: Remote demote request to state change
  70 * Latency: Local lock request to state change
  71 * Latency: State change to lock grant
  72 * Correctness: Ordering of local lock state vs. I/O requests
  73 * Correctness: Responses to remote demote requests
  74 */
  75
  76/* General glock state change (DLM lock request completes) */
  77TRACE_EVENT(gfs2_glock_state_change,
  78
  79        TP_PROTO(const struct gfs2_glock *gl, unsigned int new_state),
  80
  81        TP_ARGS(gl, new_state),
  82
  83        TP_STRUCT__entry(
  84                __field(        dev_t,  dev                     )
  85                __field(        u64,    glnum                   )
  86                __field(        u32,    gltype                  )
  87                __field(        u8,     cur_state               )
  88                __field(        u8,     new_state               )
  89                __field(        u8,     dmt_state               )
  90                __field(        u8,     tgt_state               )
  91                __field(        unsigned long,  flags           )
  92        ),
  93
  94        TP_fast_assign(
  95                __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
  96                __entry->glnum          = gl->gl_name.ln_number;
  97                __entry->gltype         = gl->gl_name.ln_type;
  98                __entry->cur_state      = glock_trace_state(gl->gl_state);
  99                __entry->new_state      = glock_trace_state(new_state);
 100                __entry->tgt_state      = glock_trace_state(gl->gl_target);
 101                __entry->dmt_state      = glock_trace_state(gl->gl_demote_state);
 102                __entry->flags          = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
 103        ),
 104
 105        TP_printk("%u,%u glock %d:%lld state %s to %s tgt:%s dmt:%s flags:%s",
 106                  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
 107                 (unsigned long long)__entry->glnum,
 108                  glock_trace_name(__entry->cur_state),
 109                  glock_trace_name(__entry->new_state),
 110                  glock_trace_name(__entry->tgt_state),
 111                  glock_trace_name(__entry->dmt_state),
 112                  show_glock_flags(__entry->flags))
 113);
 114
 115/* State change -> unlocked, glock is being deallocated */
 116TRACE_EVENT(gfs2_glock_put,
 117
 118        TP_PROTO(const struct gfs2_glock *gl),
 119
 120        TP_ARGS(gl),
 121
 122        TP_STRUCT__entry(
 123                __field(        dev_t,  dev                     )
 124                __field(        u64,    glnum                   )
 125                __field(        u32,    gltype                  )
 126                __field(        u8,     cur_state               )
 127                __field(        unsigned long,  flags           )
 128        ),
 129
 130        TP_fast_assign(
 131                __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
 132                __entry->gltype         = gl->gl_name.ln_type;
 133                __entry->glnum          = gl->gl_name.ln_number;
 134                __entry->cur_state      = glock_trace_state(gl->gl_state);
 135                __entry->flags          = gl->gl_flags  | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
 136        ),
 137
 138        TP_printk("%u,%u glock %d:%lld state %s => %s flags:%s",
 139                  MAJOR(__entry->dev), MINOR(__entry->dev),
 140                  __entry->gltype, (unsigned long long)__entry->glnum,
 141                  glock_trace_name(__entry->cur_state),
 142                  glock_trace_name(DLM_LOCK_IV),
 143                  show_glock_flags(__entry->flags))
 144
 145);
 146
 147/* Callback (local or remote) requesting lock demotion */
 148TRACE_EVENT(gfs2_demote_rq,
 149
 150        TP_PROTO(const struct gfs2_glock *gl),
 151
 152        TP_ARGS(gl),
 153
 154        TP_STRUCT__entry(
 155                __field(        dev_t,  dev                     )
 156                __field(        u64,    glnum                   )
 157                __field(        u32,    gltype                  )
 158                __field(        u8,     cur_state               )
 159                __field(        u8,     dmt_state               )
 160                __field(        unsigned long,  flags           )
 161        ),
 162
 163        TP_fast_assign(
 164                __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
 165                __entry->gltype         = gl->gl_name.ln_type;
 166                __entry->glnum          = gl->gl_name.ln_number;
 167                __entry->cur_state      = glock_trace_state(gl->gl_state);
 168                __entry->dmt_state      = glock_trace_state(gl->gl_demote_state);
 169                __entry->flags          = gl->gl_flags  | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
 170        ),
 171
 172        TP_printk("%u,%u glock %d:%lld demote %s to %s flags:%s",
 173                  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
 174                  (unsigned long long)__entry->glnum,
 175                  glock_trace_name(__entry->cur_state),
 176                  glock_trace_name(__entry->dmt_state),
 177                  show_glock_flags(__entry->flags))
 178
 179);
 180
 181/* Promotion/grant of a glock */
 182TRACE_EVENT(gfs2_promote,
 183
 184        TP_PROTO(const struct gfs2_holder *gh, int first),
 185
 186        TP_ARGS(gh, first),
 187
 188        TP_STRUCT__entry(
 189                __field(        dev_t,  dev                     )
 190                __field(        u64,    glnum                   )
 191                __field(        u32,    gltype                  )
 192                __field(        int,    first                   )
 193                __field(        u8,     state                   )
 194        ),
 195
 196        TP_fast_assign(
 197                __entry->dev    = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
 198                __entry->glnum  = gh->gh_gl->gl_name.ln_number;
 199                __entry->gltype = gh->gh_gl->gl_name.ln_type;
 200                __entry->first  = first;
 201                __entry->state  = glock_trace_state(gh->gh_state);
 202        ),
 203
 204        TP_printk("%u,%u glock %u:%llu promote %s %s",
 205                  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
 206                  (unsigned long long)__entry->glnum,
 207                  __entry->first ? "first": "other",
 208                  glock_trace_name(__entry->state))
 209);
 210
 211/* Queue/dequeue a lock request */
 212TRACE_EVENT(gfs2_glock_queue,
 213
 214        TP_PROTO(const struct gfs2_holder *gh, int queue),
 215
 216        TP_ARGS(gh, queue),
 217
 218        TP_STRUCT__entry(
 219                __field(        dev_t,  dev                     )
 220                __field(        u64,    glnum                   )
 221                __field(        u32,    gltype                  )
 222                __field(        int,    queue                   )
 223                __field(        u8,     state                   )
 224        ),
 225
 226        TP_fast_assign(
 227                __entry->dev    = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
 228                __entry->glnum  = gh->gh_gl->gl_name.ln_number;
 229                __entry->gltype = gh->gh_gl->gl_name.ln_type;
 230                __entry->queue  = queue;
 231                __entry->state  = glock_trace_state(gh->gh_state);
 232        ),
 233
 234        TP_printk("%u,%u glock %u:%llu %squeue %s",
 235                  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
 236                  (unsigned long long)__entry->glnum,
 237                  __entry->queue ? "" : "de",
 238                  glock_trace_name(__entry->state))
 239);
 240
 241/* DLM sends a reply to GFS2 */
 242TRACE_EVENT(gfs2_glock_lock_time,
 243
 244        TP_PROTO(const struct gfs2_glock *gl, s64 tdiff),
 245
 246        TP_ARGS(gl, tdiff),
 247
 248        TP_STRUCT__entry(
 249                __field(        dev_t,  dev             )
 250                __field(        u64,    glnum           )
 251                __field(        u32,    gltype          )
 252                __field(        int,    status          )
 253                __field(        char,   flags           )
 254                __field(        s64,    tdiff           )
 255                __field(        s64,    srtt            )
 256                __field(        s64,    srttvar         )
 257                __field(        s64,    srttb           )
 258                __field(        s64,    srttvarb        )
 259                __field(        s64,    sirt            )
 260                __field(        s64,    sirtvar         )
 261                __field(        s64,    dcount          )
 262                __field(        s64,    qcount          )
 263        ),
 264
 265        TP_fast_assign(
 266                __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
 267                __entry->glnum          = gl->gl_name.ln_number;
 268                __entry->gltype         = gl->gl_name.ln_type;
 269                __entry->status         = gl->gl_lksb.sb_status;
 270                __entry->flags          = gl->gl_lksb.sb_flags;
 271                __entry->tdiff          = tdiff;
 272                __entry->srtt           = gl->gl_stats.stats[GFS2_LKS_SRTT];
 273                __entry->srttvar        = gl->gl_stats.stats[GFS2_LKS_SRTTVAR];
 274                __entry->srttb          = gl->gl_stats.stats[GFS2_LKS_SRTTB];
 275                __entry->srttvarb       = gl->gl_stats.stats[GFS2_LKS_SRTTVARB];
 276                __entry->sirt           = gl->gl_stats.stats[GFS2_LKS_SIRT];
 277                __entry->sirtvar        = gl->gl_stats.stats[GFS2_LKS_SIRTVAR];
 278                __entry->dcount         = gl->gl_stats.stats[GFS2_LKS_DCOUNT];
 279                __entry->qcount         = gl->gl_stats.stats[GFS2_LKS_QCOUNT];
 280        ),
 281
 282        TP_printk("%u,%u glock %d:%lld status:%d flags:%02x tdiff:%lld srtt:%lld/%lld srttb:%lld/%lld sirt:%lld/%lld dcnt:%lld qcnt:%lld",
 283                  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
 284                  (unsigned long long)__entry->glnum,
 285                  __entry->status, __entry->flags,
 286                  (long long)__entry->tdiff,
 287                  (long long)__entry->srtt,
 288                  (long long)__entry->srttvar,
 289                  (long long)__entry->srttb,
 290                  (long long)__entry->srttvarb,
 291                  (long long)__entry->sirt,
 292                  (long long)__entry->sirtvar,
 293                  (long long)__entry->dcount,
 294                  (long long)__entry->qcount)
 295);
 296
 297/* Section 2 - Log/journal
 298 *
 299 * Objectives:
 300 * Latency: Log flush time
 301 * Correctness: pin/unpin vs. disk I/O ordering
 302 * Performance: Log usage stats
 303 */
 304
 305/* Pin/unpin a block in the log */
 306TRACE_EVENT(gfs2_pin,
 307
 308        TP_PROTO(const struct gfs2_bufdata *bd, int pin),
 309
 310        TP_ARGS(bd, pin),
 311
 312        TP_STRUCT__entry(
 313                __field(        dev_t,  dev                     )
 314                __field(        int,    pin                     )
 315                __field(        u32,    len                     )
 316                __field(        sector_t,       block           )
 317                __field(        u64,    ino                     )
 318        ),
 319
 320        TP_fast_assign(
 321                __entry->dev            = bd->bd_gl->gl_sbd->sd_vfs->s_dev;
 322                __entry->pin            = pin;
 323                __entry->len            = bd->bd_bh->b_size;
 324                __entry->block          = bd->bd_bh->b_blocknr;
 325                __entry->ino            = bd->bd_gl->gl_name.ln_number;
 326        ),
 327
 328        TP_printk("%u,%u log %s %llu/%lu inode %llu",
 329                  MAJOR(__entry->dev), MINOR(__entry->dev),
 330                  __entry->pin ? "pin" : "unpin",
 331                  (unsigned long long)__entry->block,
 332                  (unsigned long)__entry->len,
 333                  (unsigned long long)__entry->ino)
 334);
 335
 336/* Flushing the log */
 337TRACE_EVENT(gfs2_log_flush,
 338
 339        TP_PROTO(const struct gfs2_sbd *sdp, int start),
 340
 341        TP_ARGS(sdp, start),
 342
 343        TP_STRUCT__entry(
 344                __field(        dev_t,  dev                     )
 345                __field(        int,    start                   )
 346                __field(        u64,    log_seq                 )
 347        ),
 348
 349        TP_fast_assign(
 350                __entry->dev            = sdp->sd_vfs->s_dev;
 351                __entry->start          = start;
 352                __entry->log_seq        = sdp->sd_log_sequence;
 353        ),
 354
 355        TP_printk("%u,%u log flush %s %llu",
 356                  MAJOR(__entry->dev), MINOR(__entry->dev),
 357                  __entry->start ? "start" : "end",
 358                  (unsigned long long)__entry->log_seq)
 359);
 360
 361/* Reserving/releasing blocks in the log */
 362TRACE_EVENT(gfs2_log_blocks,
 363
 364        TP_PROTO(const struct gfs2_sbd *sdp, int blocks),
 365
 366        TP_ARGS(sdp, blocks),
 367
 368        TP_STRUCT__entry(
 369                __field(        dev_t,  dev                     )
 370                __field(        int,    blocks                  )
 371        ),
 372
 373        TP_fast_assign(
 374                __entry->dev            = sdp->sd_vfs->s_dev;
 375                __entry->blocks         = blocks;
 376        ),
 377
 378        TP_printk("%u,%u log reserve %d", MAJOR(__entry->dev),
 379                  MINOR(__entry->dev), __entry->blocks)
 380);
 381
 382/* Writing back the AIL */
 383TRACE_EVENT(gfs2_ail_flush,
 384
 385        TP_PROTO(const struct gfs2_sbd *sdp, const struct writeback_control *wbc, int start),
 386
 387        TP_ARGS(sdp, wbc, start),
 388
 389        TP_STRUCT__entry(
 390                __field(        dev_t,  dev                     )
 391                __field(        int, start                      )
 392                __field(        int, sync_mode                  )
 393                __field(        long, nr_to_write               )
 394        ),
 395
 396        TP_fast_assign(
 397                __entry->dev            = sdp->sd_vfs->s_dev;
 398                __entry->start          = start;
 399                __entry->sync_mode      = wbc->sync_mode;
 400                __entry->nr_to_write    = wbc->nr_to_write;
 401        ),
 402
 403        TP_printk("%u,%u ail flush %s %s %ld", MAJOR(__entry->dev),
 404                  MINOR(__entry->dev), __entry->start ? "start" : "end",
 405                  __entry->sync_mode == WB_SYNC_ALL ? "all" : "none",
 406                  __entry->nr_to_write)
 407);
 408
 409/* Section 3 - bmap
 410 *
 411 * Objectives:
 412 * Latency: Bmap request time
 413 * Performance: Block allocator tracing
 414 * Correctness: Test of disard generation vs. blocks allocated
 415 */
 416
 417/* Map an extent of blocks, possibly a new allocation */
 418TRACE_EVENT(gfs2_bmap,
 419
 420        TP_PROTO(const struct gfs2_inode *ip, const struct buffer_head *bh,
 421                sector_t lblock, int create, int errno),
 422
 423        TP_ARGS(ip, bh, lblock, create, errno),
 424
 425        TP_STRUCT__entry(
 426                __field(        dev_t,  dev                     )
 427                __field(        sector_t, lblock                )
 428                __field(        sector_t, pblock                )
 429                __field(        u64,    inum                    )
 430                __field(        unsigned long, state            )
 431                __field(        u32,    len                     )
 432                __field(        int,    create                  )
 433                __field(        int,    errno                   )
 434        ),
 435
 436        TP_fast_assign(
 437                __entry->dev            = ip->i_gl->gl_sbd->sd_vfs->s_dev;
 438                __entry->lblock         = lblock;
 439                __entry->pblock         = buffer_mapped(bh) ?  bh->b_blocknr : 0;
 440                __entry->inum           = ip->i_no_addr;
 441                __entry->state          = bh->b_state;
 442                __entry->len            = bh->b_size;
 443                __entry->create         = create;
 444                __entry->errno          = errno;
 445        ),
 446
 447        TP_printk("%u,%u bmap %llu map %llu/%lu to %llu flags:%08lx %s %d",
 448                  MAJOR(__entry->dev), MINOR(__entry->dev),
 449                  (unsigned long long)__entry->inum,
 450                  (unsigned long long)__entry->lblock,
 451                  (unsigned long)__entry->len,
 452                  (unsigned long long)__entry->pblock,
 453                  __entry->state, __entry->create ? "create " : "nocreate",
 454                  __entry->errno)
 455);
 456
 457/* Keep track of blocks as they are allocated/freed */
 458TRACE_EVENT(gfs2_block_alloc,
 459
 460        TP_PROTO(const struct gfs2_inode *ip, struct gfs2_rgrpd *rgd,
 461                 u64 block, unsigned len, u8 block_state),
 462
 463        TP_ARGS(ip, rgd, block, len, block_state),
 464
 465        TP_STRUCT__entry(
 466                __field(        dev_t,  dev                     )
 467                __field(        u64,    start                   )
 468                __field(        u64,    inum                    )
 469                __field(        u32,    len                     )
 470                __field(        u8,     block_state             )
 471                __field(        u64,    rd_addr                 )
 472                __field(        u32,    rd_free_clone           )
 473        ),
 474
 475        TP_fast_assign(
 476                __entry->dev            = ip->i_gl->gl_sbd->sd_vfs->s_dev;
 477                __entry->start          = block;
 478                __entry->inum           = ip->i_no_addr;
 479                __entry->len            = len;
 480                __entry->block_state    = block_state;
 481                __entry->rd_addr        = rgd->rd_addr;
 482                __entry->rd_free_clone  = rgd->rd_free_clone;
 483        ),
 484
 485        TP_printk("%u,%u bmap %llu alloc %llu/%lu %s rg:%llu rf:%u",
 486                  MAJOR(__entry->dev), MINOR(__entry->dev),
 487                  (unsigned long long)__entry->inum,
 488                  (unsigned long long)__entry->start,
 489                  (unsigned long)__entry->len,
 490                  block_state_name(__entry->block_state),
 491                  (unsigned long long)__entry->rd_addr,
 492                  __entry->rd_free_clone)
 493);
 494
 495#endif /* _TRACE_GFS2_H */
 496
 497/* This part must be outside protection */
 498#undef TRACE_INCLUDE_PATH
 499#define TRACE_INCLUDE_PATH .
 500#define TRACE_INCLUDE_FILE trace_gfs2
 501#include <trace/define_trace.h>
 502
 503