1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM gfs2 4 5 #if !defined(_TRACE_GFS2_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_GFS2_H 7 8 #include <linux/tracepoint.h> 9 10 #include <linux/fs.h> 11 #include <linux/buffer_head.h> 12 #include <linux/dlmconstants.h> 13 #include <linux/gfs2_ondisk.h> 14 #include <linux/writeback.h> 15 #include <linux/ktime.h> 16 #include <linux/iomap.h> 17 #include "incore.h" 18 #include "glock.h" 19 #include "rgrp.h" 20 21 #define dlm_state_name(nn) { DLM_LOCK_##nn, #nn } 22 #define glock_trace_name(x) __print_symbolic(x, \ 23 dlm_state_name(IV), \ 24 dlm_state_name(NL), \ 25 dlm_state_name(CR), \ 26 dlm_state_name(CW), \ 27 dlm_state_name(PR), \ 28 dlm_state_name(PW), \ 29 dlm_state_name(EX)) 30 31 #define block_state_name(x) __print_symbolic(x, \ 32 { GFS2_BLKST_FREE, "free" }, \ 33 { GFS2_BLKST_USED, "used" }, \ 34 { GFS2_BLKST_DINODE, "dinode" }, \ 35 { GFS2_BLKST_UNLINKED, "unlinked" }) 36 37 #define TRACE_RS_DELETE 0 38 #define TRACE_RS_TREEDEL 1 39 #define TRACE_RS_INSERT 2 40 #define TRACE_RS_CLAIM 3 41 42 #define rs_func_name(x) __print_symbolic(x, \ 43 { 0, "del " }, \ 44 { 1, "tdel" }, \ 45 { 2, "ins " }, \ 46 { 3, "clm " }) 47 48 #define show_glock_flags(flags) __print_flags(flags, "", \ 49 {(1UL << GLF_LOCK), "l" }, \ 50 {(1UL << GLF_DEMOTE), "D" }, \ 51 {(1UL << GLF_PENDING_DEMOTE), "d" }, \ 52 {(1UL << GLF_DEMOTE_IN_PROGRESS), "p" }, \ 53 {(1UL << GLF_DIRTY), "y" }, \ 54 {(1UL << GLF_LFLUSH), "f" }, \ 55 {(1UL << GLF_INVALIDATE_IN_PROGRESS), "i" }, \ 56 {(1UL << GLF_REPLY_PENDING), "r" }, \ 57 {(1UL << GLF_INITIAL), "I" }, \ 58 {(1UL << GLF_FROZEN), "F" }, \ 59 {(1UL << GLF_QUEUED), "q" }, \ 60 {(1UL << GLF_LRU), "L" }, \ 61 {(1UL << GLF_OBJECT), "o" }, \ 62 {(1UL << GLF_BLOCKING), "b" }) 63 64 #ifndef NUMPTY 65 #define NUMPTY 66 static inline u8 glock_trace_state(unsigned int state) 67 { 68 switch(state) { 69 case LM_ST_SHARED: 70 return DLM_LOCK_PR; 71 case LM_ST_DEFERRED: 72 return DLM_LOCK_CW; 73 case LM_ST_EXCLUSIVE: 74 return DLM_LOCK_EX; 75 } 76 return DLM_LOCK_NL; 77 } 78 #endif 79 80 /* Section 1 - Locking 81 * 82 * Objectives: 83 * Latency: Remote demote request to state change 84 * Latency: Local lock request to state change 85 * Latency: State change to lock grant 86 * Correctness: Ordering of local lock state vs. I/O requests 87 * Correctness: Responses to remote demote requests 88 */ 89 90 /* General glock state change (DLM lock request completes) */ 91 TRACE_EVENT(gfs2_glock_state_change, 92 93 TP_PROTO(const struct gfs2_glock *gl, unsigned int new_state), 94 95 TP_ARGS(gl, new_state), 96 97 TP_STRUCT__entry( 98 __field( dev_t, dev ) 99 __field( u64, glnum ) 100 __field( u32, gltype ) 101 __field( u8, cur_state ) 102 __field( u8, new_state ) 103 __field( u8, dmt_state ) 104 __field( u8, tgt_state ) 105 __field( unsigned long, flags ) 106 ), 107 108 TP_fast_assign( 109 __entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev; 110 __entry->glnum = gl->gl_name.ln_number; 111 __entry->gltype = gl->gl_name.ln_type; 112 __entry->cur_state = glock_trace_state(gl->gl_state); 113 __entry->new_state = glock_trace_state(new_state); 114 __entry->tgt_state = glock_trace_state(gl->gl_target); 115 __entry->dmt_state = glock_trace_state(gl->gl_demote_state); 116 __entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0); 117 ), 118 119 TP_printk("%u,%u glock %d:%lld state %s to %s tgt:%s dmt:%s flags:%s", 120 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, 121 (unsigned long long)__entry->glnum, 122 glock_trace_name(__entry->cur_state), 123 glock_trace_name(__entry->new_state), 124 glock_trace_name(__entry->tgt_state), 125 glock_trace_name(__entry->dmt_state), 126 show_glock_flags(__entry->flags)) 127 ); 128 129 /* State change -> unlocked, glock is being deallocated */ 130 TRACE_EVENT(gfs2_glock_put, 131 132 TP_PROTO(const struct gfs2_glock *gl), 133 134 TP_ARGS(gl), 135 136 TP_STRUCT__entry( 137 __field( dev_t, dev ) 138 __field( u64, glnum ) 139 __field( u32, gltype ) 140 __field( u8, cur_state ) 141 __field( unsigned long, flags ) 142 ), 143 144 TP_fast_assign( 145 __entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev; 146 __entry->gltype = gl->gl_name.ln_type; 147 __entry->glnum = gl->gl_name.ln_number; 148 __entry->cur_state = glock_trace_state(gl->gl_state); 149 __entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0); 150 ), 151 152 TP_printk("%u,%u glock %d:%lld state %s => %s flags:%s", 153 MAJOR(__entry->dev), MINOR(__entry->dev), 154 __entry->gltype, (unsigned long long)__entry->glnum, 155 glock_trace_name(__entry->cur_state), 156 glock_trace_name(DLM_LOCK_IV), 157 show_glock_flags(__entry->flags)) 158 159 ); 160 161 /* Callback (local or remote) requesting lock demotion */ 162 TRACE_EVENT(gfs2_demote_rq, 163 164 TP_PROTO(const struct gfs2_glock *gl, bool remote), 165 166 TP_ARGS(gl, remote), 167 168 TP_STRUCT__entry( 169 __field( dev_t, dev ) 170 __field( u64, glnum ) 171 __field( u32, gltype ) 172 __field( u8, cur_state ) 173 __field( u8, dmt_state ) 174 __field( unsigned long, flags ) 175 __field( bool, remote ) 176 ), 177 178 TP_fast_assign( 179 __entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev; 180 __entry->gltype = gl->gl_name.ln_type; 181 __entry->glnum = gl->gl_name.ln_number; 182 __entry->cur_state = glock_trace_state(gl->gl_state); 183 __entry->dmt_state = glock_trace_state(gl->gl_demote_state); 184 __entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0); 185 __entry->remote = remote; 186 ), 187 188 TP_printk("%u,%u glock %d:%lld demote %s to %s flags:%s %s", 189 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, 190 (unsigned long long)__entry->glnum, 191 glock_trace_name(__entry->cur_state), 192 glock_trace_name(__entry->dmt_state), 193 show_glock_flags(__entry->flags), 194 __entry->remote ? "remote" : "local") 195 196 ); 197 198 /* Promotion/grant of a glock */ 199 TRACE_EVENT(gfs2_promote, 200 201 TP_PROTO(const struct gfs2_holder *gh, int first), 202 203 TP_ARGS(gh, first), 204 205 TP_STRUCT__entry( 206 __field( dev_t, dev ) 207 __field( u64, glnum ) 208 __field( u32, gltype ) 209 __field( int, first ) 210 __field( u8, state ) 211 ), 212 213 TP_fast_assign( 214 __entry->dev = gh->gh_gl->gl_name.ln_sbd->sd_vfs->s_dev; 215 __entry->glnum = gh->gh_gl->gl_name.ln_number; 216 __entry->gltype = gh->gh_gl->gl_name.ln_type; 217 __entry->first = first; 218 __entry->state = glock_trace_state(gh->gh_state); 219 ), 220 221 TP_printk("%u,%u glock %u:%llu promote %s %s", 222 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, 223 (unsigned long long)__entry->glnum, 224 __entry->first ? "first": "other", 225 glock_trace_name(__entry->state)) 226 ); 227 228 /* Queue/dequeue a lock request */ 229 TRACE_EVENT(gfs2_glock_queue, 230 231 TP_PROTO(const struct gfs2_holder *gh, int queue), 232 233 TP_ARGS(gh, queue), 234 235 TP_STRUCT__entry( 236 __field( dev_t, dev ) 237 __field( u64, glnum ) 238 __field( u32, gltype ) 239 __field( int, queue ) 240 __field( u8, state ) 241 ), 242 243 TP_fast_assign( 244 __entry->dev = gh->gh_gl->gl_name.ln_sbd->sd_vfs->s_dev; 245 __entry->glnum = gh->gh_gl->gl_name.ln_number; 246 __entry->gltype = gh->gh_gl->gl_name.ln_type; 247 __entry->queue = queue; 248 __entry->state = glock_trace_state(gh->gh_state); 249 ), 250 251 TP_printk("%u,%u glock %u:%llu %squeue %s", 252 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, 253 (unsigned long long)__entry->glnum, 254 __entry->queue ? "" : "de", 255 glock_trace_name(__entry->state)) 256 ); 257 258 /* DLM sends a reply to GFS2 */ 259 TRACE_EVENT(gfs2_glock_lock_time, 260 261 TP_PROTO(const struct gfs2_glock *gl, s64 tdiff), 262 263 TP_ARGS(gl, tdiff), 264 265 TP_STRUCT__entry( 266 __field( dev_t, dev ) 267 __field( u64, glnum ) 268 __field( u32, gltype ) 269 __field( int, status ) 270 __field( char, flags ) 271 __field( s64, tdiff ) 272 __field( u64, srtt ) 273 __field( u64, srttvar ) 274 __field( u64, srttb ) 275 __field( u64, srttvarb ) 276 __field( u64, sirt ) 277 __field( u64, sirtvar ) 278 __field( u64, dcount ) 279 __field( u64, qcount ) 280 ), 281 282 TP_fast_assign( 283 __entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev; 284 __entry->glnum = gl->gl_name.ln_number; 285 __entry->gltype = gl->gl_name.ln_type; 286 __entry->status = gl->gl_lksb.sb_status; 287 __entry->flags = gl->gl_lksb.sb_flags; 288 __entry->tdiff = tdiff; 289 __entry->srtt = gl->gl_stats.stats[GFS2_LKS_SRTT]; 290 __entry->srttvar = gl->gl_stats.stats[GFS2_LKS_SRTTVAR]; 291 __entry->srttb = gl->gl_stats.stats[GFS2_LKS_SRTTB]; 292 __entry->srttvarb = gl->gl_stats.stats[GFS2_LKS_SRTTVARB]; 293 __entry->sirt = gl->gl_stats.stats[GFS2_LKS_SIRT]; 294 __entry->sirtvar = gl->gl_stats.stats[GFS2_LKS_SIRTVAR]; 295 __entry->dcount = gl->gl_stats.stats[GFS2_LKS_DCOUNT]; 296 __entry->qcount = gl->gl_stats.stats[GFS2_LKS_QCOUNT]; 297 ), 298 299 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", 300 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, 301 (unsigned long long)__entry->glnum, 302 __entry->status, __entry->flags, 303 (long long)__entry->tdiff, 304 (long long)__entry->srtt, 305 (long long)__entry->srttvar, 306 (long long)__entry->srttb, 307 (long long)__entry->srttvarb, 308 (long long)__entry->sirt, 309 (long long)__entry->sirtvar, 310 (long long)__entry->dcount, 311 (long long)__entry->qcount) 312 ); 313 314 /* Section 2 - Log/journal 315 * 316 * Objectives: 317 * Latency: Log flush time 318 * Correctness: pin/unpin vs. disk I/O ordering 319 * Performance: Log usage stats 320 */ 321 322 /* Pin/unpin a block in the log */ 323 TRACE_EVENT(gfs2_pin, 324 325 TP_PROTO(const struct gfs2_bufdata *bd, int pin), 326 327 TP_ARGS(bd, pin), 328 329 TP_STRUCT__entry( 330 __field( dev_t, dev ) 331 __field( int, pin ) 332 __field( u32, len ) 333 __field( sector_t, block ) 334 __field( u64, ino ) 335 ), 336 337 TP_fast_assign( 338 __entry->dev = bd->bd_gl->gl_name.ln_sbd->sd_vfs->s_dev; 339 __entry->pin = pin; 340 __entry->len = bd->bd_bh->b_size; 341 __entry->block = bd->bd_bh->b_blocknr; 342 __entry->ino = bd->bd_gl->gl_name.ln_number; 343 ), 344 345 TP_printk("%u,%u log %s %llu/%lu inode %llu", 346 MAJOR(__entry->dev), MINOR(__entry->dev), 347 __entry->pin ? "pin" : "unpin", 348 (unsigned long long)__entry->block, 349 (unsigned long)__entry->len, 350 (unsigned long long)__entry->ino) 351 ); 352 353 /* Flushing the log */ 354 TRACE_EVENT(gfs2_log_flush, 355 356 TP_PROTO(const struct gfs2_sbd *sdp, int start, u32 flags), 357 358 TP_ARGS(sdp, start, flags), 359 360 TP_STRUCT__entry( 361 __field( dev_t, dev ) 362 __field( int, start ) 363 __field( u64, log_seq ) 364 __field( u32, flags ) 365 ), 366 367 TP_fast_assign( 368 __entry->dev = sdp->sd_vfs->s_dev; 369 __entry->start = start; 370 __entry->log_seq = sdp->sd_log_sequence; 371 __entry->flags = flags; 372 ), 373 374 TP_printk("%u,%u log flush %s %llu %llx", 375 MAJOR(__entry->dev), MINOR(__entry->dev), 376 __entry->start ? "start" : "end", 377 (unsigned long long)__entry->log_seq, 378 (unsigned long long)__entry->flags) 379 ); 380 381 /* Reserving/releasing blocks in the log */ 382 TRACE_EVENT(gfs2_log_blocks, 383 384 TP_PROTO(const struct gfs2_sbd *sdp, int blocks), 385 386 TP_ARGS(sdp, blocks), 387 388 TP_STRUCT__entry( 389 __field( dev_t, dev ) 390 __field( int, blocks ) 391 ), 392 393 TP_fast_assign( 394 __entry->dev = sdp->sd_vfs->s_dev; 395 __entry->blocks = blocks; 396 ), 397 398 TP_printk("%u,%u log reserve %d", MAJOR(__entry->dev), 399 MINOR(__entry->dev), __entry->blocks) 400 ); 401 402 /* Writing back the AIL */ 403 TRACE_EVENT(gfs2_ail_flush, 404 405 TP_PROTO(const struct gfs2_sbd *sdp, const struct writeback_control *wbc, int start), 406 407 TP_ARGS(sdp, wbc, start), 408 409 TP_STRUCT__entry( 410 __field( dev_t, dev ) 411 __field( int, start ) 412 __field( int, sync_mode ) 413 __field( long, nr_to_write ) 414 ), 415 416 TP_fast_assign( 417 __entry->dev = sdp->sd_vfs->s_dev; 418 __entry->start = start; 419 __entry->sync_mode = wbc->sync_mode; 420 __entry->nr_to_write = wbc->nr_to_write; 421 ), 422 423 TP_printk("%u,%u ail flush %s %s %ld", MAJOR(__entry->dev), 424 MINOR(__entry->dev), __entry->start ? "start" : "end", 425 __entry->sync_mode == WB_SYNC_ALL ? "all" : "none", 426 __entry->nr_to_write) 427 ); 428 429 /* Section 3 - bmap 430 * 431 * Objectives: 432 * Latency: Bmap request time 433 * Performance: Block allocator tracing 434 * Correctness: Test of disard generation vs. blocks allocated 435 */ 436 437 /* Map an extent of blocks, possibly a new allocation */ 438 TRACE_EVENT(gfs2_bmap, 439 440 TP_PROTO(const struct gfs2_inode *ip, const struct buffer_head *bh, 441 sector_t lblock, int create, int errno), 442 443 TP_ARGS(ip, bh, lblock, create, errno), 444 445 TP_STRUCT__entry( 446 __field( dev_t, dev ) 447 __field( sector_t, lblock ) 448 __field( sector_t, pblock ) 449 __field( u64, inum ) 450 __field( unsigned long, state ) 451 __field( u32, len ) 452 __field( int, create ) 453 __field( int, errno ) 454 ), 455 456 TP_fast_assign( 457 __entry->dev = ip->i_gl->gl_name.ln_sbd->sd_vfs->s_dev; 458 __entry->lblock = lblock; 459 __entry->pblock = buffer_mapped(bh) ? bh->b_blocknr : 0; 460 __entry->inum = ip->i_no_addr; 461 __entry->state = bh->b_state; 462 __entry->len = bh->b_size; 463 __entry->create = create; 464 __entry->errno = errno; 465 ), 466 467 TP_printk("%u,%u bmap %llu map %llu/%lu to %llu flags:%08lx %s %d", 468 MAJOR(__entry->dev), MINOR(__entry->dev), 469 (unsigned long long)__entry->inum, 470 (unsigned long long)__entry->lblock, 471 (unsigned long)__entry->len, 472 (unsigned long long)__entry->pblock, 473 __entry->state, __entry->create ? "create " : "nocreate", 474 __entry->errno) 475 ); 476 477 TRACE_EVENT(gfs2_iomap_start, 478 479 TP_PROTO(const struct gfs2_inode *ip, loff_t pos, ssize_t length, 480 u16 flags), 481 482 TP_ARGS(ip, pos, length, flags), 483 484 TP_STRUCT__entry( 485 __field( dev_t, dev ) 486 __field( u64, inum ) 487 __field( loff_t, pos ) 488 __field( ssize_t, length ) 489 __field( u16, flags ) 490 ), 491 492 TP_fast_assign( 493 __entry->dev = ip->i_gl->gl_name.ln_sbd->sd_vfs->s_dev; 494 __entry->inum = ip->i_no_addr; 495 __entry->pos = pos; 496 __entry->length = length; 497 __entry->flags = flags; 498 ), 499 500 TP_printk("%u,%u bmap %llu iomap start %llu/%lu flags:%08x", 501 MAJOR(__entry->dev), MINOR(__entry->dev), 502 (unsigned long long)__entry->inum, 503 (unsigned long long)__entry->pos, 504 (unsigned long)__entry->length, (u16)__entry->flags) 505 ); 506 507 TRACE_EVENT(gfs2_iomap_end, 508 509 TP_PROTO(const struct gfs2_inode *ip, struct iomap *iomap, int ret), 510 511 TP_ARGS(ip, iomap, ret), 512 513 TP_STRUCT__entry( 514 __field( dev_t, dev ) 515 __field( u64, inum ) 516 __field( loff_t, offset ) 517 __field( ssize_t, length ) 518 __field( u16, flags ) 519 __field( u16, type ) 520 __field( int, ret ) 521 ), 522 523 TP_fast_assign( 524 __entry->dev = ip->i_gl->gl_name.ln_sbd->sd_vfs->s_dev; 525 __entry->inum = ip->i_no_addr; 526 __entry->offset = iomap->offset; 527 __entry->length = iomap->length; 528 __entry->flags = iomap->flags; 529 __entry->type = iomap->type; 530 __entry->ret = ret; 531 ), 532 533 TP_printk("%u,%u bmap %llu iomap end %llu/%lu ty:%d flags:%08x rc:%d", 534 MAJOR(__entry->dev), MINOR(__entry->dev), 535 (unsigned long long)__entry->inum, 536 (unsigned long long)__entry->offset, 537 (unsigned long)__entry->length, (u16)__entry->type, 538 (u16)__entry->flags, __entry->ret) 539 ); 540 541 /* Keep track of blocks as they are allocated/freed */ 542 TRACE_EVENT(gfs2_block_alloc, 543 544 TP_PROTO(const struct gfs2_inode *ip, struct gfs2_rgrpd *rgd, 545 u64 block, unsigned len, u8 block_state), 546 547 TP_ARGS(ip, rgd, block, len, block_state), 548 549 TP_STRUCT__entry( 550 __field( dev_t, dev ) 551 __field( u64, start ) 552 __field( u64, inum ) 553 __field( u32, len ) 554 __field( u8, block_state ) 555 __field( u64, rd_addr ) 556 __field( u32, rd_free_clone ) 557 __field( u32, rd_reserved ) 558 ), 559 560 TP_fast_assign( 561 __entry->dev = rgd->rd_gl->gl_name.ln_sbd->sd_vfs->s_dev; 562 __entry->start = block; 563 __entry->inum = ip->i_no_addr; 564 __entry->len = len; 565 __entry->block_state = block_state; 566 __entry->rd_addr = rgd->rd_addr; 567 __entry->rd_free_clone = rgd->rd_free_clone; 568 __entry->rd_reserved = rgd->rd_reserved; 569 ), 570 571 TP_printk("%u,%u bmap %llu alloc %llu/%lu %s rg:%llu rf:%u rr:%lu", 572 MAJOR(__entry->dev), MINOR(__entry->dev), 573 (unsigned long long)__entry->inum, 574 (unsigned long long)__entry->start, 575 (unsigned long)__entry->len, 576 block_state_name(__entry->block_state), 577 (unsigned long long)__entry->rd_addr, 578 __entry->rd_free_clone, (unsigned long)__entry->rd_reserved) 579 ); 580 581 /* Keep track of multi-block reservations as they are allocated/freed */ 582 TRACE_EVENT(gfs2_rs, 583 584 TP_PROTO(const struct gfs2_blkreserv *rs, u8 func), 585 586 TP_ARGS(rs, func), 587 588 TP_STRUCT__entry( 589 __field( dev_t, dev ) 590 __field( u64, rd_addr ) 591 __field( u32, rd_free_clone ) 592 __field( u32, rd_reserved ) 593 __field( u64, inum ) 594 __field( u64, start ) 595 __field( u32, free ) 596 __field( u8, func ) 597 ), 598 599 TP_fast_assign( 600 __entry->dev = rs->rs_rbm.rgd->rd_sbd->sd_vfs->s_dev; 601 __entry->rd_addr = rs->rs_rbm.rgd->rd_addr; 602 __entry->rd_free_clone = rs->rs_rbm.rgd->rd_free_clone; 603 __entry->rd_reserved = rs->rs_rbm.rgd->rd_reserved; 604 __entry->inum = rs->rs_inum; 605 __entry->start = gfs2_rbm_to_block(&rs->rs_rbm); 606 __entry->free = rs->rs_free; 607 __entry->func = func; 608 ), 609 610 TP_printk("%u,%u bmap %llu resrv %llu rg:%llu rf:%lu rr:%lu %s f:%lu", 611 MAJOR(__entry->dev), MINOR(__entry->dev), 612 (unsigned long long)__entry->inum, 613 (unsigned long long)__entry->start, 614 (unsigned long long)__entry->rd_addr, 615 (unsigned long)__entry->rd_free_clone, 616 (unsigned long)__entry->rd_reserved, 617 rs_func_name(__entry->func), (unsigned long)__entry->free) 618 ); 619 620 #endif /* _TRACE_GFS2_H */ 621 622 /* This part must be outside protection */ 623 #undef TRACE_INCLUDE_PATH 624 #define TRACE_INCLUDE_PATH . 625 #define TRACE_INCLUDE_FILE trace_gfs2 626 #include <trace/define_trace.h> 627 628