LXR linux/fs/gfs2/trace

   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
  50static 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) */
  75TRACE_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 */
 114TRACE_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 */
 146TRACE_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 */
 180TRACE_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 */
 210TRACE_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 */
 248TRACE_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 */
 279TRACE_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 */
 304TRACE_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 */
 325TRACE_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 */
 360TRACE_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 */
 400TRACE_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
 439