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 1.21 2007/04/30 07:18:53 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 static void ktr_resync_callback(void *dummy __unused); 182 183 extern int64_t tsc_offsets[]; 184 185 static void 186 ktr_sysinit(void *dummy) 187 { 188 int i; 189 190 for(i = 1; i < ncpus; ++i) { 191 ktr_buf[i] = kmalloc(KTR_ENTRIES * sizeof(struct ktr_entry), 192 M_KTR, M_WAITOK | M_ZERO); 193 } 194 callout_init(&ktr_resync_callout); 195 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 196 } 197 SYSINIT(ktr_sysinit, SI_BOOT2_KLD, SI_ORDER_ANY, ktr_sysinit, NULL); 198 199 /* 200 * Try to resynchronize the TSC's for all cpus. This is really, really nasty. 201 * We have to send an IPIQ message to all remote cpus, wait until they 202 * get into their IPIQ processing code loop, then do an even stricter hard 203 * loop to get the cpus as close to synchronized as we can to get the most 204 * accurate reading. 205 * 206 * This callback occurs on cpu0. 207 */ 208 #if KTR_TESTLOG 209 static void ktr_pingpong_remote(void *dummy); 210 static void ktr_pipeline_remote(void *dummy); 211 #endif 212 213 #if defined(SMP) && defined(_RDTSC_SUPPORTED_) 214 215 static void ktr_resync_remote(void *dummy); 216 extern cpumask_t smp_active_mask; 217 218 /* 219 * We use a callout callback instead of a systimer because we cannot afford 220 * to preempt anyone to do this, or we might deadlock a spin-lock or 221 * serializer between two cpus. 222 */ 223 static 224 void 225 ktr_resync_callback(void *dummy __unused) 226 { 227 int count; 228 229 KKASSERT(mycpu->gd_cpuid == 0); 230 231 #if KTR_TESTLOG 232 /* 233 * Test logging 234 */ 235 if (ktr_testlogcnt) { 236 --ktr_testlogcnt; 237 cpu_disable_intr(); 238 logtest(test1); 239 logtest(test2); 240 logtest(test3); 241 logtest_noargs(test4); 242 logtest_noargs(test5); 243 logtest_noargs(test6); 244 cpu_enable_intr(); 245 } 246 247 /* 248 * Test IPI messaging 249 */ 250 if (ktr_testipicnt && ktr_testipicnt_remainder == 0 && ncpus > 1) { 251 ktr_testipicnt_remainder = ktr_testipicnt; 252 ktr_testipicnt = 0; 253 lwkt_send_ipiq_bycpu(1, ktr_pingpong_remote, NULL); 254 } 255 256 /* 257 * Test critical sections 258 */ 259 if (ktr_testcritcnt) { 260 crit_enter(); 261 crit_exit(); 262 logtest_noargs(crit_beg); 263 for (count = ktr_testcritcnt; count; --count) { 264 crit_enter(); 265 crit_exit(); 266 } 267 logtest_noargs(crit_end); 268 ktr_testcritcnt = 0; 269 } 270 271 /* 272 * Test spinlock sections 273 */ 274 if (ktr_testspincnt) { 275 struct spinlock spin; 276 277 spin_init(&spin); 278 spin_lock_wr(&spin); 279 spin_unlock_wr(&spin); 280 logtest_noargs(spin_beg); 281 for (count = ktr_testspincnt; count; --count) { 282 spin_lock_wr(&spin); 283 spin_unlock_wr(&spin); 284 } 285 logtest_noargs(spin_end); 286 logtest_noargs(spin_beg); 287 for (count = ktr_testspincnt; count; --count) { 288 spin_lock_rd(&spin); 289 spin_unlock_rd(&spin); 290 } 291 logtest_noargs(spin_end); 292 ktr_testspincnt = 0; 293 } 294 #endif 295 296 /* 297 * Resynchronize the TSC 298 */ 299 if (ktr_resynchronize == 0) 300 goto done; 301 if ((cpu_feature & CPUID_TSC) == 0) 302 return; 303 304 /* 305 * Send the synchronizing IPI and wait for all cpus to get into 306 * their spin loop. We must process incoming IPIs while waiting 307 * to avoid a deadlock. 308 */ 309 crit_enter(); 310 ktr_sync_count = 0; 311 ktr_sync_state = 1; 312 ktr_sync_tsc = rdtsc(); 313 count = lwkt_send_ipiq_mask(mycpu->gd_other_cpus & smp_active_mask, 314 (ipifunc1_t)ktr_resync_remote, NULL); 315 while (ktr_sync_count != count) 316 lwkt_process_ipiq(); 317 318 /* 319 * Continuously update the TSC for cpu 0 while waiting for all other 320 * cpus to finish stage 2. 321 */ 322 cpu_disable_intr(); 323 ktr_sync_tsc = rdtsc(); 324 cpu_sfence(); 325 ktr_sync_state = 2; 326 cpu_sfence(); 327 while (ktr_sync_count != 0) { 328 ktr_sync_tsc = rdtsc(); 329 cpu_lfence(); 330 cpu_nop(); 331 } 332 cpu_enable_intr(); 333 crit_exit(); 334 ktr_sync_state = 0; 335 done: 336 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 337 } 338 339 /* 340 * The remote-end of the KTR synchronization protocol runs on all cpus except 341 * cpu 0. Since this is an IPI function, it is entered with the current 342 * thread in a critical section. 343 */ 344 static void 345 ktr_resync_remote(void *dummy __unused) 346 { 347 volatile int64_t tsc1 = ktr_sync_tsc; 348 volatile int64_t tsc2; 349 350 /* 351 * Inform the master that we have entered our hard loop. 352 */ 353 KKASSERT(ktr_sync_state == 1); 354 atomic_add_int(&ktr_sync_count, 1); 355 while (ktr_sync_state == 1) { 356 lwkt_process_ipiq(); 357 } 358 359 /* 360 * Now the master is in a hard loop, synchronize the TSC and 361 * we are done. 362 */ 363 cpu_disable_intr(); 364 KKASSERT(ktr_sync_state == 2); 365 tsc2 = ktr_sync_tsc; 366 if (tsc2 > tsc1) 367 tsc_offsets[mycpu->gd_cpuid] = rdtsc() - tsc2; 368 atomic_subtract_int(&ktr_sync_count, 1); 369 cpu_enable_intr(); 370 } 371 372 #if KTR_TESTLOG 373 374 static 375 void 376 ktr_pingpong_remote(void *dummy __unused) 377 { 378 int other_cpu; 379 380 logtest_noargs(pingpong); 381 other_cpu = 1 - mycpu->gd_cpuid; 382 if (ktr_testipicnt_remainder) { 383 --ktr_testipicnt_remainder; 384 lwkt_send_ipiq_bycpu(other_cpu, ktr_pingpong_remote, NULL); 385 } else { 386 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 387 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 388 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 389 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 390 lwkt_send_ipiq_bycpu(other_cpu, ktr_pipeline_remote, NULL); 391 } 392 } 393 394 static 395 void 396 ktr_pipeline_remote(void *dummy __unused) 397 { 398 logtest_noargs(pipeline); 399 } 400 401 #endif 402 403 #else /* !SMP */ 404 405 /* 406 * The resync callback for UP doesn't do anything other then run the test 407 * log messages. If test logging is not enabled, don't bother resetting 408 * the callout. 409 */ 410 static 411 void 412 ktr_resync_callback(void *dummy __unused) 413 { 414 #if KTR_TESTLOG 415 /* 416 * Test logging 417 */ 418 if (ktr_testlogcnt) { 419 --ktr_testlogcnt; 420 cpu_disable_intr(); 421 logtest(test1); 422 logtest(test2); 423 logtest(test3); 424 logtest_noargs(test4); 425 logtest_noargs(test5); 426 logtest_noargs(test6); 427 cpu_enable_intr(); 428 } 429 callout_reset(&ktr_resync_callout, hz / 10, ktr_resync_callback, NULL); 430 #endif 431 } 432 433 #endif 434 435 /* 436 * KTR_WRITE_ENTRY - Primary entry point for kernel trace logging 437 */ 438 static __inline 439 void 440 ktr_write_entry(struct ktr_info *info, const char *file, int line, 441 const void *ptr) 442 { 443 struct ktr_entry *entry; 444 int cpu; 445 446 cpu = mycpu->gd_cpuid; 447 if (!ktr_buf[cpu]) 448 return; 449 450 crit_enter(); 451 entry = ktr_buf[cpu] + (ktr_idx[cpu] & KTR_ENTRIES_MASK); 452 ++ktr_idx[cpu]; 453 #ifdef _RDTSC_SUPPORTED_ 454 if (cpu_feature & CPUID_TSC) { 455 #ifdef SMP 456 entry->ktr_timestamp = rdtsc() - tsc_offsets[cpu]; 457 #else 458 entry->ktr_timestamp = rdtsc(); 459 #endif 460 } else 461 #endif 462 { 463 entry->ktr_timestamp = get_approximate_time_t(); 464 } 465 entry->ktr_info = info; 466 entry->ktr_file = file; 467 entry->ktr_line = line; 468 crit_exit(); 469 if (info->kf_data_size > KTR_BUFSIZE) 470 bcopyi(ptr, entry->ktr_data, KTR_BUFSIZE); 471 else if (info->kf_data_size) 472 bcopyi(ptr, entry->ktr_data, info->kf_data_size); 473 if (ktr_stacktrace) 474 cpu_ktr_caller(entry); 475 #ifdef KTR_VERBOSE 476 if (ktr_verbose && info->kf_format) { 477 #ifdef SMP 478 kprintf("cpu%d ", cpu); 479 #endif 480 if (ktr_verbose > 1) { 481 kprintf("%s.%d\t", entry->ktr_file, entry->ktr_line); 482 } 483 kvprintf(info->kf_format, ptr); 484 kprintf("\n"); 485 } 486 #endif 487 } 488 489 void 490 ktr_log(struct ktr_info *info, const char *file, int line, ...) 491 { 492 __va_list va; 493 494 if (panicstr == NULL) { 495 __va_start(va, line); 496 ktr_write_entry(info, file, line, va); 497 __va_end(va); 498 } 499 } 500 501 void 502 ktr_log_ptr(struct ktr_info *info, const char *file, int line, const void *ptr) 503 { 504 if (panicstr == NULL) { 505 ktr_write_entry(info, file, line, ptr); 506 } 507 } 508 509 #ifdef DDB 510 511 #define NUM_LINES_PER_PAGE 19 512 513 struct tstate { 514 int cur; 515 int first; 516 }; 517 518 static int db_ktr_verbose; 519 static int db_mach_vtrace(int cpu, struct ktr_entry *kp, int idx); 520 521 DB_SHOW_COMMAND(ktr, db_ktr_all) 522 { 523 int a_flag = 0; 524 int c; 525 int nl = 0; 526 int i; 527 struct tstate tstate[MAXCPU]; 528 int printcpu = -1; 529 530 for(i = 0; i < ncpus; i++) { 531 tstate[i].first = -1; 532 tstate[i].cur = ktr_idx[i] & KTR_ENTRIES_MASK; 533 } 534 db_ktr_verbose = 0; 535 while ((c = *(modif++)) != '\0') { 536 if (c == 'v') { 537 db_ktr_verbose = 1; 538 } 539 else if (c == 'a') { 540 a_flag = 1; 541 } 542 else if (c == 'c') { 543 printcpu = 0; 544 while ((c = *(modif++)) != '\0') { 545 if (isdigit(c)) { 546 printcpu *= 10; 547 printcpu += c - '0'; 548 } 549 else { 550 modif++; 551 break; 552 } 553 } 554 modif--; 555 } 556 } 557 if (printcpu > ncpus - 1) { 558 db_printf("Invalid cpu number\n"); 559 return; 560 } 561 /* 562 * Lopp throug all the buffers and print the content of them, sorted 563 * by the timestamp. 564 */ 565 while (1) { 566 int counter; 567 u_int64_t highest_ts; 568 int highest_cpu; 569 struct ktr_entry *kp; 570 571 if (a_flag == 1 && cncheckc() != -1) 572 return; 573 highest_ts = 0; 574 highest_cpu = -1; 575 /* 576 * Find the lowest timestamp 577 */ 578 for (i = 0, counter = 0; i < ncpus; i++) { 579 if (ktr_buf[i] == NULL) 580 continue; 581 if (printcpu != -1 && printcpu != i) 582 continue; 583 if (tstate[i].cur == -1) { 584 counter++; 585 if (counter == ncpus) { 586 db_printf("--- End of trace buffer ---\n"); 587 return; 588 } 589 continue; 590 } 591 if (ktr_buf[i][tstate[i].cur].ktr_timestamp > highest_ts) { 592 highest_ts = ktr_buf[i][tstate[i].cur].ktr_timestamp; 593 highest_cpu = i; 594 } 595 } 596 i = highest_cpu; 597 KKASSERT(i != -1); 598 kp = &ktr_buf[i][tstate[i].cur]; 599 if (tstate[i].first == -1) 600 tstate[i].first = tstate[i].cur; 601 if (--tstate[i].cur < 0) 602 tstate[i].cur = KTR_ENTRIES - 1; 603 if (tstate[i].first == tstate[i].cur) { 604 db_mach_vtrace(i, kp, tstate[i].cur + 1); 605 tstate[i].cur = -1; 606 continue; 607 } 608 if (ktr_buf[i][tstate[i].cur].ktr_info == NULL) 609 tstate[i].cur = -1; 610 if (db_more(&nl) == -1) 611 break; 612 if (db_mach_vtrace(i, kp, tstate[i].cur + 1) == 0) 613 tstate[i].cur = -1; 614 } 615 } 616 617 static int 618 db_mach_vtrace(int cpu, struct ktr_entry *kp, int idx) 619 { 620 if (kp->ktr_info == NULL) 621 return(0); 622 #ifdef SMP 623 db_printf("cpu%d ", cpu); 624 #endif 625 db_printf("%d: ", idx); 626 if (db_ktr_verbose) { 627 db_printf("%10.10lld %s.%d\t", (long long)kp->ktr_timestamp, 628 kp->ktr_file, kp->ktr_line); 629 } 630 db_printf("%s\t", kp->ktr_info->kf_name); 631 db_printf("from(%p,%p) ", kp->ktr_caller1, kp->ktr_caller2); 632 if (kp->ktr_info->kf_format) { 633 int32_t *args = kp->ktr_data; 634 db_printf(kp->ktr_info->kf_format, 635 args[0], args[1], args[2], args[3], 636 args[4], args[5], args[6], args[7], 637 args[8], args[9], args[10], args[11]); 638 639 } 640 db_printf("\n"); 641 642 return(1); 643 } 644 645 #endif /* DDB */ 646