fs/gfs2/trace_gfs2.h

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