1 /* 2 * Copyright (c) 2005 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 /* 35 * The following copyright applies to the DDB command code: 36 * 37 * Copyright (c) 2000 John Baldwin <jhb@FreeBSD.org> 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the author nor the names of any co-contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 /* 65 * $DragonFly: src/sys/kern/kern_ktr.c,v 1.17 2006/09/05 03:48:12 dillon Exp $ 66 */ 67 /* 68 * Kernel tracepoint facility. 69 */ 70 71 #include "opt_ddb.h" 72 #include "opt_ktr.h" 73 74 #include <sys/param.h> 75 #include <sys/cons.h> 76 #include <sys/kernel.h> 77 #include <sys/libkern.h> 78 #include <sys/proc.h> 79 #include <sys/sysctl.h> 80 #include <sys/ktr.h> 81 #include <sys/systm.h> 82 #include <sys/time.h> 83 #include <sys/malloc.h> 84 #include <sys/spinlock.h> 85 #include <sys/thread2.h> 86 #include <sys/spinlock2.h> 87 #include <sys/ctype.h> 88 89 #include <machine/cpu.h> 90 #include <machine/cpufunc.h> 91 #include <machine/specialreg.h> 92 #include <machine/md_var.h> 93 94 #include <ddb/ddb.h> 95 96 #ifndef KTR_ENTRIES 97 #define KTR_ENTRIES 2048 98 #endif 99 #define KTR_ENTRIES_MASK (KTR_ENTRIES - 1) 100 101 /* 102 * test logging support. When ktr_testlogcnt is non-zero each synchronization 103 * interrupt will issue six back-to-back ktr logging messages on cpu 0 104 * so the user can determine KTR logging overheads. 105 */ 106 #if !defined(KTR_TESTLOG) 107 #define KTR_TESTLOG KTR_ALL 108 #endif 109 KTR_INFO_MASTER(testlog); 110 #if KTR_TESTLOG 111 KTR_INFO(KTR_TESTLOG, testlog, test1, 0, "test1", sizeof(void *) * 4); 112 KTR_INFO(KTR_TESTLOG, testlog, test2, 1, "test2", sizeof(void *) * 4); 113 KTR_INFO(KTR_TESTLOG, testlog, test3, 2, "test3", sizeof(void *) * 4); 114 KTR_INFO(KTR_TESTLOG, testlog, test4, 3, "test4", 0); 115 KTR_INFO(KTR_TESTLOG, testlog, test5, 4, "test5", 0); 116 KTR_INFO(KTR_TESTLOG, testlog, test6, 5, "test6", 0); 117 #ifdef SMP 118 KTR_INFO(KTR_TESTLOG, testlog, pingpong, 6, "pingpong", 0); 119 KTR_INFO(KTR_TESTLOG, testlog, pipeline, 7, "pipeline", 0); 120 #endif 121 KTR_INFO(KTR_TESTLOG, testlog, crit_beg, 8, "crit_beg", 0); 122 KTR_INFO(KTR_TESTLOG, testlog, crit_end, 9, "crit_end", 0); 123 KTR_INFO(KTR_TESTLOG, testlog, spin_beg, 10, "spin_beg", 0); 124 KTR_INFO(KTR_TESTLOG, testlog, spin_end, 11, "spin_end", 0); 125 #define logtest(name) KTR_LOG(testlog_ ## name, 0, 0, 0, 0) 126 #define logtest_noargs(name) KTR_LOG(testlog_ ## name) 127 #endif 128 129 MALLOC_DEFINE(M_KTR, "ktr", "ktr buffers"); 130 131 SYSCTL_NODE(_debug, OID_AUTO, ktr, CTLFLAG_RW, 0, "ktr"); 132 133 static int32_t ktr_cpumask = -1; 134 TUNABLE_INT("debug.ktr.cpumask", &ktr_cpumask); 135 SYSCTL_INT(_debug_ktr, OID_AUTO, cpumask, CTLFLAG_RW, &ktr_cpumask, 0, ""); 136 137 static int ktr_entries = KTR_ENTRIES; 138 SYSCTL_INT(_debug_ktr, OID_AUTO, entries, CTLFLAG_RD, &ktr_entries, 0, ""); 139 140 static int ktr_version = KTR_VERSION; 141 SYSCTL_INT(_debug_ktr, OID_AUTO, version, CTLFLAG_RD, &ktr_version, 0, ""); 142 143 static int ktr_stacktrace = 1; 144 SYSCTL_INT(_debug_ktr, OID_AUTO, stacktrace, CTLFLAG_RD, &ktr_stacktrace, 0, ""); 145 146 static int ktr_resynchronize = 0; 147 SYSCTL_INT(_debug_ktr, OID_AUTO, resynchronize, CTLFLAG_RW, &ktr_resynchronize, 0, ""); 148 149 #if KTR_TESTLOG 150 static int ktr_testlogcnt = 0; 151 SYSCTL_INT(_debug_ktr, OID_AUTO, testlogcnt, CTLFLAG_RW, &ktr_testlogcnt, 0, ""); 152 static int ktr_testipicnt = 0; 153 static int ktr_testipicnt_remainder; 154 SYSCTL_INT(_debug_ktr, OID_AUTO, testipicnt, CTLFLAG_RW, &ktr_testipicnt, 0, ""); 155 static int ktr_testcritcnt = 0; 156 SYSCTL_INT(_debug_ktr, OID_AUTO, testcritcnt, CTLFLAG_RW, &ktr_testcritcnt, 0, ""); 157 static int ktr_testspincnt = 0; 158 SYSCTL_INT(_debug_ktr, OID_AUTO, testspincnt, CTLFLAG_RW, &ktr_testspincnt, 0, ""); 159 #endif 160 161 /* 162 * Give cpu0 a static buffer so the tracepoint facility can be used during 163 * early boot (note however that we still use a critical section, XXX). 164 */ 165 static struct ktr_entry ktr_buf0[KTR_ENTRIES]; 166 static struct ktr_entry *ktr_buf[MAXCPU] = { &ktr_buf0[0] }; 167 static int ktr_idx[MAXCPU]; 168 #ifdef SMP 169 static int ktr_sync_state = 0; 170 static int ktr_sync_count; 171 static int64_t ktr_sync_tsc; 172 #endif 173 struct callout ktr_resync_callout; 174 175 #ifdef KTR_VERBOSE 176 int ktr_verbose = KTR_VERBOSE; 177 TUNABLE_INT("debug.ktr.verbose", &ktr_verbose); 178 SYSCTL_INT(_debug_ktr, OID_AUTO, verbose, CTLFLAG_RW, &ktr_verbose, 0, ""); 179 #endif 180 181 extern int64_t tsc_offsets[]; 182 183 static void 184 ktr_sysinit(void *dummy) 185 { 186 int i; 187 188 for(i = 1; i < ncpus; ++i) { 189 ktr_buf[i] = kmalloc(KTR_ENTRIES * sizeof(struct ktr_entry), 190 M_KTR, M_WAITOK | M_ZERO); 191 } 192 } 193 SYSINIT(ktr_sysinit, SI_SUB_INTRINSIC, SI_ORDER_FIRST, ktr_sysinit, NULL); 194 195 /* 196 * Try to resynchronize the TSC's for all cpus. This is really, really nasty. 197 * We have to send an IPIQ message to all remote cpus, wait until they 198 * get into their IPIQ processing code loop, then do an even stricter hard 199 * loop to get the cpus as close to synchronized as we can to get the most 200 * accurate reading. 201 * 202 * This callback occurs on cpu0. 203 */ 204 static void ktr_resync_callback(void *dummy); 205 #if KTR_TESTLOG 206 static void ktr_pingpong_remote(void *dummy); 207 static void ktr_pipeline_remote(void *dummy); 208 #endif 209 210 static void 211 ktr_resyncinit(void *dummy) 212 { 213 callout_init(&ktr_resync_callout); 214 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 215 } 216 SYSINIT(ktr_resync, SI_SUB_FINISH_SMP+1, SI_ORDER_ANY, ktr_resyncinit, NULL); 217 218 #ifdef SMP 219 220 static void ktr_resync_remote(void *dummy); 221 extern cpumask_t smp_active_mask; 222 223 /* 224 * We use a callout callback instead of a systimer because we cannot afford 225 * to preempt anyone to do this, or we might deadlock a spin-lock or 226 * serializer between two cpus. 227 */ 228 static 229 void 230 ktr_resync_callback(void *dummy __unused) 231 { 232 int count; 233 234 KKASSERT(mycpu->gd_cpuid == 0); 235 236 #if KTR_TESTLOG 237 /* 238 * Test logging 239 */ 240 if (ktr_testlogcnt) { 241 --ktr_testlogcnt; 242 cpu_disable_intr(); 243 logtest(test1); 244 logtest(test2); 245 logtest(test3); 246 logtest_noargs(test4); 247 logtest_noargs(test5); 248 logtest_noargs(test6); 249 cpu_enable_intr(); 250 } 251 252 /* 253 * Test IPI messaging 254 */ 255 if (ktr_testipicnt && ktr_testipicnt_remainder == 0 && ncpus > 1) { 256 ktr_testipicnt_remainder = ktr_testipicnt; 257 ktr_testipicnt = 0; 258 lwkt_send_ipiq_bycpu(1, ktr_pingpong_remote, NULL); 259 } 260 261 /* 262 * Test critical sections 263 */ 264 if (ktr_testcritcnt) { 265 crit_enter(); 266 crit_exit(); 267 logtest_noargs(crit_beg); 268 for (count = ktr_testcritcnt; count; --count) { 269 crit_enter(); 270 crit_exit(); 271 } 272 logtest_noargs(crit_end); 273 ktr_testcritcnt = 0; 274 } 275 276 /* 277 * Test spinlock sections 278 */ 279 if (ktr_testspincnt) { 280 struct spinlock spin; 281 282 spin_init(&spin); 283 spin_lock_wr(&spin); 284 spin_unlock_wr(&spin); 285 logtest_noargs(spin_beg); 286 for (count = ktr_testspincnt; count; --count) { 287 spin_lock_wr(&spin); 288 spin_unlock_wr(&spin); 289 } 290 logtest_noargs(spin_end); 291 logtest_noargs(spin_beg); 292 for (count = ktr_testspincnt; count; --count) { 293 spin_lock_rd(&spin); 294 spin_unlock_rd(&spin); 295 } 296 logtest_noargs(spin_end); 297 ktr_testspincnt = 0; 298 } 299 #endif 300 301 /* 302 * Resynchronize the TSC 303 */ 304 if (ktr_resynchronize == 0) 305 goto done; 306 if ((cpu_feature & CPUID_TSC) == 0) 307 return; 308 309 /* 310 * Send the synchronizing IPI and wait for all cpus to get into 311 * their spin loop. We must process incoming IPIs while waiting 312 * to avoid a deadlock. 313 */ 314 crit_enter(); 315 ktr_sync_count = 0; 316 ktr_sync_state = 1; 317 ktr_sync_tsc = rdtsc(); 318 count = lwkt_send_ipiq_mask(mycpu->gd_other_cpus & smp_active_mask, 319 (ipifunc1_t)ktr_resync_remote, NULL); 320 while (ktr_sync_count != count) 321 lwkt_process_ipiq(); 322 323 /* 324 * Continuously update the TSC for cpu 0 while waiting for all other 325 * cpus to finish stage 2. 326 */ 327 cpu_disable_intr(); 328 ktr_sync_tsc = rdtsc(); 329 cpu_sfence(); 330 ktr_sync_state = 2; 331 cpu_sfence(); 332 while (ktr_sync_count != 0) { 333 ktr_sync_tsc = rdtsc(); 334 cpu_lfence(); 335 cpu_nop(); 336 } 337 cpu_enable_intr(); 338 crit_exit(); 339 ktr_sync_state = 0; 340 done: 341 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 342 } 343 344 /* 345 * The remote-end of the KTR synchronization protocol runs on all cpus except 346 * cpu 0. Since this is an IPI function, it is entered with the current 347 * thread in a critical section. 348 */ 349 static void 350 ktr_resync_remote(void *dummy __unused) 351 { 352 volatile int64_t tsc1 = ktr_sync_tsc; 353 volatile int64_t tsc2; 354 355 /* 356 * Inform the master that we have entered our hard loop. 357 */ 358 KKASSERT(ktr_sync_state == 1); 359 atomic_add_int(&ktr_sync_count, 1); 360 while (ktr_sync_state == 1) { 361 lwkt_process_ipiq(); 362 } 363 364 /* 365 * Now the master is in a hard loop, synchronize the TSC and 366 * we are done. 367 */ 368 cpu_disable_intr(); 369 KKASSERT(ktr_sync_state == 2); 370 tsc2 = ktr_sync_tsc; 371 if (tsc2 > tsc1) 372 tsc_offsets[mycpu->gd_cpuid] = rdtsc() - tsc2; 373 atomic_subtract_int(&ktr_sync_count, 1); 374 cpu_enable_intr(); 375 } 376 377 #if KTR_TESTLOG 378 379 static 380 void 381 ktr_pingpong_remote(void *dummy __unused) 382 { 383 int other_cpu; 384 385 logtest_noargs(pingpong); 386 other_cpu = 1 - mycpu->gd_cpuid; 387 if (ktr_testipicnt_remainder) { 388 --ktr_testipicnt_remainder; 389 lwkt_send_ipiq_bycpu(other_cpu, ktr_pingpong_remote, NULL); 390 } else { 391 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 392 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 393 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 394 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 395 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 396 } 397 } 398 399 static 400 void 401 ktr_pipeline_remote(void *dummy __unused) 402 { 403 logtest_noargs(pipeline); 404 } 405 406 #endif 407 408 #else /* !SMP */ 409 410 /* 411 * The resync callback for UP doesn't do anything other then run the test 412 * log messages. If test logging is not enabled, don't bother resetting 413 * the callout. 414 */ 415 static 416 void 417 ktr_resync_callback(void *dummy __unused) 418 { 419 #if KTR_TESTLOG 420 /* 421 * Test logging 422 */ 423 if (ktr_testlogcnt) { 424 --ktr_testlogcnt; 425 cpu_disable_intr(); 426 logtest(test1); 427 logtest(test2); 428 logtest(test3); 429 logtest_noargs(test4); 430 logtest_noargs(test5); 431 logtest_noargs(test6); 432 cpu_enable_intr(); 433 } 434 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 435 #endif 436 } 437 438 #endif 439 440 /* 441 * KTR_WRITE_ENTRY - Primary entry point for kernel trace logging 442 */ 443 static __inline 444 void 445 ktr_write_entry(struct ktr_info *info, const char *file, int line, 446 const void *ptr) 447 { 448 struct ktr_entry *entry; 449 int cpu; 450 451 cpu = mycpu->gd_cpuid; 452 if (!ktr_buf[cpu]) 453 return; 454 455 crit_enter(); 456 entry = ktr_buf[cpu] + (ktr_idx[cpu] & KTR_ENTRIES_MASK); 457 ++ktr_idx[cpu]; 458 if (cpu_feature & CPUID_TSC) { 459 #ifdef SMP 460 entry->ktr_timestamp = rdtsc() - tsc_offsets[cpu]; 461 #else 462 entry->ktr_timestamp = rdtsc(); 463 #endif 464 } else { 465 entry->ktr_timestamp = get_approximate_time_t(); 466 } 467 entry->ktr_info = info; 468 entry->ktr_file = file; 469 entry->ktr_line = line; 470 crit_exit(); 471 if (info->kf_data_size > KTR_BUFSIZE) 472 bcopyi(ptr, entry->ktr_data, KTR_BUFSIZE); 473 else if (info->kf_data_size) 474 bcopyi(ptr, entry->ktr_data, info->kf_data_size); 475 if (ktr_stacktrace) 476 cpu_ktr_caller(entry); 477 #ifdef KTR_VERBOSE 478 if (ktr_verbose && info->kf_format) { 479 #ifdef SMP 480 printf("cpu%d ", cpu); 481 #endif 482 if (ktr_verbose > 1) { 483 printf("%s.%d\t", entry->ktr_file, entry->ktr_line); 484 } 485 vprintf(info->kf_format, ptr); 486 printf("\n"); 487 } 488 #endif 489 } 490 491 void 492 ktr_log(struct ktr_info *info, const char *file, int line, ...) 493 { 494 __va_list va; 495 496 if (panicstr == NULL) { 497 __va_start(va, line); 498 ktr_write_entry(info, file, line, va); 499 __va_end(va); 500 } 501 } 502 503 void 504 ktr_log_ptr(struct ktr_info *info, const char *file, int line, const void *ptr) 505 { 506 if (panicstr == NULL) { 507 ktr_write_entry(info, file, line, ptr); 508 } 509 } 510 511 #ifdef DDB 512 513 #define NUM_LINES_PER_PAGE 19 514 515 struct tstate { 516 int cur; 517 int first; 518 }; 519 520 static int db_ktr_verbose; 521 static int db_mach_vtrace(int cpu, struct ktr_entry *kp, int idx); 522 523 DB_SHOW_COMMAND(ktr, db_ktr_all) 524 { 525 int a_flag = 0; 526 int c; 527 int nl = 0; 528 int i; 529 struct tstate tstate[MAXCPU]; 530 int printcpu = -1; 531 532 for(i = 0; i < ncpus; i++) { 533 tstate[i].first = -1; 534 tstate[i].cur = ktr_idx[i] & KTR_ENTRIES_MASK; 535 } 536 db_ktr_verbose = 0; 537 while ((c = *(modif++)) != '\0') { 538 if (c == 'v') { 539 db_ktr_verbose = 1; 540 } 541 else if (c == 'a') { 542 a_flag = 1; 543 } 544 else if (c == 'c') { 545 printcpu = 0; 546 while ((c = *(modif++)) != '\0') { 547 if (isdigit(c)) { 548 printcpu *= 10; 549 printcpu += c - '0'; 550 } 551 else { 552 modif++; 553 break; 554 } 555 } 556 modif--; 557 } 558 } 559 if (printcpu > ncpus - 1) { 560 db_printf("Invalid cpu number\n"); 561 return; 562 } 563 /* 564 * Lopp throug all the buffers and print the content of them, sorted 565 * by the timestamp. 566 */ 567 while (1) { 568 int counter; 569 u_int64_t highest_ts; 570 int highest_cpu; 571 struct ktr_entry *kp; 572 573 if (a_flag == 1 && cncheckc() != -1) 574 return; 575 highest_ts = 0; 576 highest_cpu = -1; 577 /* 578 * Find the lowest timestamp 579 */ 580 for (i = 0, counter = 0; i < ncpus; i++) { 581 if (ktr_buf[i] == NULL) 582 continue; 583 if (printcpu != -1 && printcpu != i) 584 continue; 585 if (tstate[i].cur == -1) { 586 counter++; 587 if (counter == ncpus) { 588 db_printf("--- End of trace buffer ---\n"); 589 return; 590 } 591 continue; 592 } 593 if (ktr_buf[i][tstate[i].cur].ktr_timestamp > highest_ts) { 594 highest_ts = ktr_buf[i][tstate[i].cur].ktr_timestamp; 595 highest_cpu = i; 596 } 597 } 598 i = highest_cpu; 599 KKASSERT(i != -1); 600 kp = &ktr_buf[i][tstate[i].cur]; 601 if (tstate[i].first == -1) 602 tstate[i].first = tstate[i].cur; 603 if (--tstate[i].cur < 0) 604 tstate[i].cur = KTR_ENTRIES - 1; 605 if (tstate[i].first == tstate[i].cur) { 606 db_mach_vtrace(i, kp, tstate[i].cur + 1); 607 tstate[i].cur = -1; 608 continue; 609 } 610 if (ktr_buf[i][tstate[i].cur].ktr_info == NULL) 611 tstate[i].cur = -1; 612 if (db_more(&nl) == -1) 613 break; 614 if (db_mach_vtrace(i, kp, tstate[i].cur + 1) == 0) 615 tstate[i].cur = -1; 616 } 617 } 618 619 static int 620 db_mach_vtrace(int cpu, struct ktr_entry *kp, int idx) 621 { 622 if (kp->ktr_info == NULL) 623 return(0); 624 #ifdef SMP 625 db_printf("cpu%d ", cpu); 626 #endif 627 db_printf("%d: ", idx); 628 if (db_ktr_verbose) { 629 db_printf("%10.10lld %s.%d\t", (long long)kp->ktr_timestamp, 630 kp->ktr_file, kp->ktr_line); 631 } 632 db_printf("%s\t", kp->ktr_info->kf_name); 633 db_printf("from(%p,%p) ", kp->ktr_caller1, kp->ktr_caller2); 634 if (kp->ktr_info->kf_format) { 635 int32_t *args = kp->ktr_data; 636 db_printf(kp->ktr_info->kf_format, 637 args[0], args[1], args[2], args[3], 638 args[4], args[5], args[6], args[7], 639 args[8], args[9], args[10], args[11]); 640 641 } 642 db_printf("\n"); 643 644 return(1); 645 } 646 647 #endif /* DDB */ 648