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