1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005-2007, Joseph Koshy 5 * Copyright (c) 2007 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * Portions of this software were developed by A. Joseph Koshy under 9 * sponsorship from the FreeBSD Foundation and Google, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Transform a hwpmc(4) log into human readable form, and into 35 * gprof(1) compatible profiles. 36 */ 37 38 #include <sys/cdefs.h> 39 #include <sys/param.h> 40 #include <sys/endian.h> 41 #include <sys/cpuset.h> 42 #include <sys/gmon.h> 43 #include <sys/imgact_aout.h> 44 #include <sys/imgact_elf.h> 45 #include <sys/mman.h> 46 #include <sys/pmc.h> 47 #include <sys/queue.h> 48 #include <sys/socket.h> 49 #include <sys/stat.h> 50 #include <sys/wait.h> 51 52 #include <netinet/in.h> 53 54 #include <assert.h> 55 #include <curses.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <gelf.h> 60 #include <libgen.h> 61 #include <limits.h> 62 #include <netdb.h> 63 #include <pmc.h> 64 #include <pmclog.h> 65 #include <sysexits.h> 66 #include <stdint.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <unistd.h> 71 72 #include "pmcstat.h" 73 #include "pmcstat_log.h" 74 #include "pmcstat_top.h" 75 76 /* 77 * PUBLIC INTERFACES 78 * 79 * pmcstat_initialize_logging() initialize this module, called first 80 * pmcstat_shutdown_logging() orderly shutdown, called last 81 * pmcstat_open_log() open an eventlog for processing 82 * pmcstat_process_log() print/convert an event log 83 * pmcstat_display_log() top mode display for the log 84 * pmcstat_close_log() finish processing an event log 85 * 86 * IMPLEMENTATION NOTES 87 * 88 * We correlate each 'callchain' or 'sample' entry seen in the event 89 * log back to an executable object in the system. Executable objects 90 * include: 91 * - program executables, 92 * - shared libraries loaded by the runtime loader, 93 * - dlopen()'ed objects loaded by the program, 94 * - the runtime loader itself, 95 * - the kernel and kernel modules. 96 * 97 * Each process that we know about is treated as a set of regions that 98 * map to executable objects. Processes are described by 99 * 'pmcstat_process' structures. Executable objects are tracked by 100 * 'pmcstat_image' structures. The kernel and kernel modules are 101 * common to all processes (they reside at the same virtual addresses 102 * for all processes). Individual processes can have their text 103 * segments and shared libraries loaded at process-specific locations. 104 * 105 * A given executable object can be in use by multiple processes 106 * (e.g., libc.so) and loaded at a different address in each. 107 * pmcstat_pcmap structures track per-image mappings. 108 * 109 * The sample log could have samples from multiple PMCs; we 110 * generate one 'gmon.out' profile per PMC. 111 * 112 * IMPLEMENTATION OF GMON OUTPUT 113 * 114 * Each executable object gets one 'gmon.out' profile, per PMC in 115 * use. Creation of 'gmon.out' profiles is done lazily. The 116 * 'gmon.out' profiles generated for a given sampling PMC are 117 * aggregates of all the samples for that particular executable 118 * object. 119 * 120 * IMPLEMENTATION OF SYSTEM-WIDE CALLGRAPH OUTPUT 121 * 122 * Each active pmcid has its own callgraph structure, described by a 123 * 'struct pmcstat_callgraph'. Given a process id and a list of pc 124 * values, we map each pc value to a tuple (image, symbol), where 125 * 'image' denotes an executable object and 'symbol' is the closest 126 * symbol that precedes the pc value. Each pc value in the list is 127 * also given a 'rank' that reflects its depth in the call stack. 128 */ 129 130 struct pmcstat_pmcs pmcstat_pmcs = LIST_HEAD_INITIALIZER(pmcstat_pmcs); 131 132 /* 133 * All image descriptors are kept in a hash table. 134 */ 135 struct pmcstat_image_hash_list pmcstat_image_hash[PMCSTAT_NHASH]; 136 137 /* 138 * All process descriptors are kept in a hash table. 139 */ 140 struct pmcstat_process_hash_list pmcstat_process_hash[PMCSTAT_NHASH]; 141 142 struct pmcstat_stats pmcstat_stats; /* statistics */ 143 static int ps_samples_period; /* samples count between top refresh. */ 144 145 struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */ 146 147 #include "pmcpl_gprof.h" 148 #include "pmcpl_callgraph.h" 149 #include "pmcpl_annotate.h" 150 #include "pmcpl_annotate_cg.h" 151 #include "pmcpl_calltree.h" 152 153 static struct pmc_plugins plugins[] = { 154 { 155 .pl_name = "none", 156 }, 157 { 158 .pl_name = "callgraph", 159 .pl_init = pmcpl_cg_init, 160 .pl_shutdown = pmcpl_cg_shutdown, 161 .pl_process = pmcpl_cg_process, 162 .pl_topkeypress = pmcpl_cg_topkeypress, 163 .pl_topdisplay = pmcpl_cg_topdisplay 164 }, 165 { 166 .pl_name = "gprof", 167 .pl_shutdown = pmcpl_gmon_shutdown, 168 .pl_process = pmcpl_gmon_process, 169 .pl_initimage = pmcpl_gmon_initimage, 170 .pl_shutdownimage = pmcpl_gmon_shutdownimage, 171 .pl_newpmc = pmcpl_gmon_newpmc 172 }, 173 { 174 .pl_name = "annotate", 175 .pl_process = pmcpl_annotate_process 176 }, 177 { 178 .pl_name = "calltree", 179 .pl_configure = pmcpl_ct_configure, 180 .pl_init = pmcpl_ct_init, 181 .pl_shutdown = pmcpl_ct_shutdown, 182 .pl_process = pmcpl_ct_process, 183 .pl_topkeypress = pmcpl_ct_topkeypress, 184 .pl_topdisplay = pmcpl_ct_topdisplay 185 }, 186 { 187 .pl_name = "annotate_cg", 188 .pl_process = pmcpl_annotate_cg_process 189 }, 190 191 { 192 .pl_name = NULL 193 } 194 }; 195 196 static int pmcstat_mergepmc; 197 198 int pmcstat_pmcinfilter = 0; /* PMC filter for top mode. */ 199 float pmcstat_threshold = 0.5; /* Cost filter for top mode. */ 200 201 /* 202 * Prototypes 203 */ 204 205 static void pmcstat_stats_reset(int _reset_global); 206 207 /* 208 * PMC count. 209 */ 210 int pmcstat_npmcs; 211 212 /* 213 * PMC Top mode pause state. 214 */ 215 static int pmcstat_pause; 216 217 static void 218 pmcstat_stats_reset(int reset_global) 219 { 220 struct pmcstat_pmcrecord *pr; 221 222 /* Flush PMCs stats. */ 223 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) { 224 pr->pr_samples = 0; 225 pr->pr_dubious_frames = 0; 226 } 227 ps_samples_period = 0; 228 229 /* Flush global stats. */ 230 if (reset_global) 231 bzero(&pmcstat_stats, sizeof(struct pmcstat_stats)); 232 } 233 234 /* 235 * Resolve file name and line number for the given address. 236 */ 237 int 238 pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr, 239 char *sourcefile, size_t sourcefile_len, unsigned *sourceline, 240 char *funcname, size_t funcname_len) 241 { 242 static int addr2line_warn = 0; 243 244 char *sep, cmdline[PATH_MAX], imagepath[PATH_MAX]; 245 unsigned l; 246 int fd; 247 248 if (image->pi_addr2line == NULL) { 249 /* Try default debug file location. */ 250 snprintf(imagepath, sizeof(imagepath), 251 "/usr/lib/debug/%s%s.debug", 252 args.pa_fsroot, 253 pmcstat_string_unintern(image->pi_fullpath)); 254 fd = open(imagepath, O_RDONLY); 255 if (fd < 0) { 256 /* Old kernel symbol path. */ 257 snprintf(imagepath, sizeof(imagepath), "%s%s.symbols", 258 args.pa_fsroot, 259 pmcstat_string_unintern(image->pi_fullpath)); 260 fd = open(imagepath, O_RDONLY); 261 if (fd < 0) { 262 snprintf(imagepath, sizeof(imagepath), "%s%s", 263 args.pa_fsroot, 264 pmcstat_string_unintern( 265 image->pi_fullpath)); 266 } 267 } 268 if (fd >= 0) 269 close(fd); 270 /* 271 * New addr2line support recursive inline function with -i 272 * but the format does not add a marker when no more entries 273 * are available. 274 */ 275 snprintf(cmdline, sizeof(cmdline), "addr2line -Cfe \"%s\"", 276 imagepath); 277 image->pi_addr2line = popen(cmdline, "r+"); 278 if (image->pi_addr2line == NULL) { 279 if (!addr2line_warn) { 280 addr2line_warn = 1; 281 warnx( 282 "WARNING: addr2line is needed for source code information." 283 ); 284 } 285 return (0); 286 } 287 } 288 289 if (feof(image->pi_addr2line) || ferror(image->pi_addr2line)) { 290 warnx("WARNING: addr2line pipe error"); 291 pclose(image->pi_addr2line); 292 image->pi_addr2line = NULL; 293 return (0); 294 } 295 296 fprintf(image->pi_addr2line, "%p\n", (void *)addr); 297 298 if (fgets(funcname, funcname_len, image->pi_addr2line) == NULL) { 299 warnx("WARNING: addr2line function name read error"); 300 return (0); 301 } 302 sep = strchr(funcname, '\n'); 303 if (sep != NULL) 304 *sep = '\0'; 305 306 if (fgets(sourcefile, sourcefile_len, image->pi_addr2line) == NULL) { 307 warnx("WARNING: addr2line source file read error"); 308 return (0); 309 } 310 sep = strchr(sourcefile, ':'); 311 if (sep == NULL) { 312 warnx("WARNING: addr2line source line separator missing"); 313 return (0); 314 } 315 *sep = '\0'; 316 l = atoi(sep+1); 317 if (l == 0) 318 return (0); 319 *sourceline = l; 320 return (1); 321 } 322 323 /* 324 * Given a pmcid in use, find its human-readable name. 325 */ 326 327 const char * 328 pmcstat_pmcid_to_name(pmc_id_t pmcid) 329 { 330 struct pmcstat_pmcrecord *pr; 331 332 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) 333 if (pr->pr_pmcid == pmcid) 334 return (pmcstat_string_unintern(pr->pr_pmcname)); 335 336 return NULL; 337 } 338 339 /* 340 * Convert PMC index to name. 341 */ 342 343 const char * 344 pmcstat_pmcindex_to_name(int pmcin) 345 { 346 struct pmcstat_pmcrecord *pr; 347 348 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) 349 if (pr->pr_pmcin == pmcin) 350 return pmcstat_string_unintern(pr->pr_pmcname); 351 352 return NULL; 353 } 354 355 /* 356 * Return PMC record with given index. 357 */ 358 359 struct pmcstat_pmcrecord * 360 pmcstat_pmcindex_to_pmcr(int pmcin) 361 { 362 struct pmcstat_pmcrecord *pr; 363 364 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) 365 if (pr->pr_pmcin == pmcin) 366 return pr; 367 368 return NULL; 369 } 370 371 /* 372 * Print log entries as text. 373 */ 374 375 static int 376 pmcstat_print_log(void) 377 { 378 struct pmclog_ev ev; 379 uint32_t npc; 380 381 while (pmclog_read(args.pa_logparser, &ev) == 0) { 382 assert(ev.pl_state == PMCLOG_OK); 383 switch (ev.pl_type) { 384 case PMCLOG_TYPE_CALLCHAIN: 385 PMCSTAT_PRINT_ENTRY("callchain", 386 "%d 0x%x %d %d %c", ev.pl_u.pl_cc.pl_pid, 387 ev.pl_u.pl_cc.pl_pmcid, 388 PMC_CALLCHAIN_CPUFLAGS_TO_CPU(ev.pl_u.pl_cc. \ 389 pl_cpuflags), ev.pl_u.pl_cc.pl_npc, 390 PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(ev.pl_u.pl_cc.\ 391 pl_cpuflags) ? 'u' : 's'); 392 for (npc = 0; npc < ev.pl_u.pl_cc.pl_npc; npc++) 393 PMCSTAT_PRINT_ENTRY("...", "%p", 394 (void *) ev.pl_u.pl_cc.pl_pc[npc]); 395 break; 396 case PMCLOG_TYPE_CLOSELOG: 397 PMCSTAT_PRINT_ENTRY("closelog",); 398 break; 399 case PMCLOG_TYPE_DROPNOTIFY: 400 PMCSTAT_PRINT_ENTRY("drop",); 401 break; 402 case PMCLOG_TYPE_INITIALIZE: 403 PMCSTAT_PRINT_ENTRY("initlog","0x%x \"%s\"", 404 ev.pl_u.pl_i.pl_version, 405 pmc_name_of_cputype(ev.pl_u.pl_i.pl_arch)); 406 if ((ev.pl_u.pl_i.pl_version & 0xFF000000) != 407 PMC_VERSION_MAJOR << 24) 408 warnx( 409 "WARNING: Log version 0x%x != expected version 0x%x.", 410 ev.pl_u.pl_i.pl_version, PMC_VERSION); 411 break; 412 case PMCLOG_TYPE_MAP_IN: 413 PMCSTAT_PRINT_ENTRY("map-in","%d %p \"%s\"", 414 ev.pl_u.pl_mi.pl_pid, 415 (void *) ev.pl_u.pl_mi.pl_start, 416 ev.pl_u.pl_mi.pl_pathname); 417 break; 418 case PMCLOG_TYPE_MAP_OUT: 419 PMCSTAT_PRINT_ENTRY("map-out","%d %p %p", 420 ev.pl_u.pl_mo.pl_pid, 421 (void *) ev.pl_u.pl_mo.pl_start, 422 (void *) ev.pl_u.pl_mo.pl_end); 423 break; 424 case PMCLOG_TYPE_PMCALLOCATE: 425 PMCSTAT_PRINT_ENTRY("allocate","0x%x \"%s\" 0x%x", 426 ev.pl_u.pl_a.pl_pmcid, 427 ev.pl_u.pl_a.pl_evname, 428 ev.pl_u.pl_a.pl_flags); 429 break; 430 case PMCLOG_TYPE_PMCALLOCATEDYN: 431 PMCSTAT_PRINT_ENTRY("allocatedyn","0x%x \"%s\" 0x%x", 432 ev.pl_u.pl_ad.pl_pmcid, 433 ev.pl_u.pl_ad.pl_evname, 434 ev.pl_u.pl_ad.pl_flags); 435 break; 436 case PMCLOG_TYPE_PMCATTACH: 437 PMCSTAT_PRINT_ENTRY("attach","0x%x %d \"%s\"", 438 ev.pl_u.pl_t.pl_pmcid, 439 ev.pl_u.pl_t.pl_pid, 440 ev.pl_u.pl_t.pl_pathname); 441 break; 442 case PMCLOG_TYPE_PMCDETACH: 443 PMCSTAT_PRINT_ENTRY("detach","0x%x %d", 444 ev.pl_u.pl_d.pl_pmcid, 445 ev.pl_u.pl_d.pl_pid); 446 break; 447 case PMCLOG_TYPE_PROCCSW: 448 PMCSTAT_PRINT_ENTRY("cswval","0x%x %d %jd", 449 ev.pl_u.pl_c.pl_pmcid, 450 ev.pl_u.pl_c.pl_pid, 451 ev.pl_u.pl_c.pl_value); 452 break; 453 case PMCLOG_TYPE_PROC_CREATE: 454 PMCSTAT_PRINT_ENTRY("create","%d %x \"%s\"", 455 ev.pl_u.pl_pc.pl_pid, 456 ev.pl_u.pl_pc.pl_flags, 457 ev.pl_u.pl_pc.pl_pcomm); 458 break; 459 case PMCLOG_TYPE_PROCEXEC: 460 PMCSTAT_PRINT_ENTRY("exec","0x%x %d %p %p \"%s\"", 461 ev.pl_u.pl_x.pl_pmcid, 462 ev.pl_u.pl_x.pl_pid, 463 (void *)ev.pl_u.pl_x.pl_baseaddr, 464 (void *)ev.pl_u.pl_x.pl_dynaddr, 465 ev.pl_u.pl_x.pl_pathname); 466 break; 467 case PMCLOG_TYPE_PROCEXIT: 468 PMCSTAT_PRINT_ENTRY("exitval","0x%x %d %jd", 469 ev.pl_u.pl_e.pl_pmcid, 470 ev.pl_u.pl_e.pl_pid, 471 ev.pl_u.pl_e.pl_value); 472 break; 473 case PMCLOG_TYPE_PROCFORK: 474 PMCSTAT_PRINT_ENTRY("fork","%d %d", 475 ev.pl_u.pl_f.pl_oldpid, 476 ev.pl_u.pl_f.pl_newpid); 477 break; 478 case PMCLOG_TYPE_USERDATA: 479 PMCSTAT_PRINT_ENTRY("userdata","0x%x", 480 ev.pl_u.pl_u.pl_userdata); 481 break; 482 case PMCLOG_TYPE_SYSEXIT: 483 PMCSTAT_PRINT_ENTRY("exit","%d", 484 ev.pl_u.pl_se.pl_pid); 485 break; 486 case PMCLOG_TYPE_THR_CREATE: 487 PMCSTAT_PRINT_ENTRY("thr-create","%d %d %x \"%s\"", 488 ev.pl_u.pl_tc.pl_tid, 489 ev.pl_u.pl_tc.pl_pid, 490 ev.pl_u.pl_tc.pl_flags, 491 ev.pl_u.pl_tc.pl_tdname); 492 break; 493 case PMCLOG_TYPE_THR_EXIT: 494 PMCSTAT_PRINT_ENTRY("thr-exit","%d", 495 ev.pl_u.pl_tc.pl_tid); 496 break; 497 default: 498 fprintf(args.pa_printfile, "unknown event (type %d).\n", 499 ev.pl_type); 500 } 501 } 502 503 if (ev.pl_state == PMCLOG_EOF) 504 return (PMCSTAT_FINISHED); 505 else if (ev.pl_state == PMCLOG_REQUIRE_DATA) 506 return (PMCSTAT_RUNNING); 507 508 errx(EX_DATAERR, 509 "ERROR: event parsing failed (record %jd, offset 0x%jx).", 510 (uintmax_t) ev.pl_count + 1, ev.pl_offset); 511 /*NOTREACHED*/ 512 } 513 514 /* 515 * Public Interfaces. 516 */ 517 518 /* 519 * Process a log file in offline analysis mode. 520 */ 521 522 int 523 pmcstat_process_log(void) 524 { 525 526 /* 527 * If analysis has not been asked for, just print the log to 528 * the current output file. 529 */ 530 if (args.pa_flags & FLAG_DO_PRINT) 531 return (pmcstat_print_log()); 532 else 533 return (pmcstat_analyze_log(&args, plugins, &pmcstat_stats, pmcstat_kernproc, 534 pmcstat_mergepmc, &pmcstat_npmcs, &ps_samples_period)); 535 } 536 537 /* 538 * Refresh top display. 539 */ 540 541 static void 542 pmcstat_refresh_top(void) 543 { 544 int v_attrs; 545 float v; 546 char pmcname[40]; 547 struct pmcstat_pmcrecord *pmcpr; 548 549 /* If in pause mode do not refresh display. */ 550 if (pmcstat_pause) 551 return; 552 553 /* Wait until PMC pop in the log. */ 554 pmcpr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); 555 if (pmcpr == NULL) 556 return; 557 558 /* Format PMC name. */ 559 if (pmcstat_mergepmc) 560 snprintf(pmcname, sizeof(pmcname), "[%s]", 561 pmcstat_string_unintern(pmcpr->pr_pmcname)); 562 else 563 snprintf(pmcname, sizeof(pmcname), "%s.%d", 564 pmcstat_string_unintern(pmcpr->pr_pmcname), 565 pmcstat_pmcinfilter); 566 567 /* Format samples count. */ 568 if (ps_samples_period > 0) 569 v = (pmcpr->pr_samples * 100.0) / ps_samples_period; 570 else 571 v = 0.; 572 v_attrs = PMCSTAT_ATTRPERCENT(v); 573 574 PMCSTAT_PRINTBEGIN(); 575 PMCSTAT_PRINTW("PMC: %s Samples: %u ", 576 pmcname, 577 pmcpr->pr_samples); 578 PMCSTAT_ATTRON(v_attrs); 579 PMCSTAT_PRINTW("(%.1f%%) ", v); 580 PMCSTAT_ATTROFF(v_attrs); 581 PMCSTAT_PRINTW(", %u unresolved\n\n", 582 pmcpr->pr_dubious_frames); 583 if (plugins[args.pa_plugin].pl_topdisplay != NULL) 584 plugins[args.pa_plugin].pl_topdisplay(); 585 PMCSTAT_PRINTEND(); 586 } 587 588 /* 589 * Find the next pmc index to display. 590 */ 591 592 static void 593 pmcstat_changefilter(void) 594 { 595 int pmcin; 596 struct pmcstat_pmcrecord *pmcr; 597 598 /* 599 * Find the next merge target. 600 */ 601 if (pmcstat_mergepmc) { 602 pmcin = pmcstat_pmcinfilter; 603 604 do { 605 pmcr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); 606 if (pmcr == NULL || pmcr == pmcr->pr_merge) 607 break; 608 609 pmcstat_pmcinfilter++; 610 if (pmcstat_pmcinfilter >= pmcstat_npmcs) 611 pmcstat_pmcinfilter = 0; 612 613 } while (pmcstat_pmcinfilter != pmcin); 614 } 615 } 616 617 /* 618 * Top mode keypress. 619 */ 620 621 int 622 pmcstat_keypress_log(void) 623 { 624 int c, ret = 0; 625 WINDOW *w; 626 627 w = newwin(1, 0, 1, 0); 628 c = wgetch(w); 629 wprintw(w, "Key: %c => ", c); 630 switch (c) { 631 case 'A': 632 if (args.pa_flags & FLAG_SKIP_TOP_FN_RES) 633 args.pa_flags &= ~FLAG_SKIP_TOP_FN_RES; 634 else 635 args.pa_flags |= FLAG_SKIP_TOP_FN_RES; 636 break; 637 case 'c': 638 wprintw(w, "enter mode 'd' or 'a' => "); 639 c = wgetch(w); 640 if (c == 'd') { 641 args.pa_topmode = PMCSTAT_TOP_DELTA; 642 wprintw(w, "switching to delta mode"); 643 } else { 644 args.pa_topmode = PMCSTAT_TOP_ACCUM; 645 wprintw(w, "switching to accumulation mode"); 646 } 647 break; 648 case 'I': 649 if (args.pa_flags & FLAG_SHOW_OFFSET) 650 args.pa_flags &= ~FLAG_SHOW_OFFSET; 651 else 652 args.pa_flags |= FLAG_SHOW_OFFSET; 653 break; 654 case 'm': 655 pmcstat_mergepmc = !pmcstat_mergepmc; 656 /* 657 * Changing merge state require data reset. 658 */ 659 if (plugins[args.pa_plugin].pl_shutdown != NULL) 660 plugins[args.pa_plugin].pl_shutdown(NULL); 661 pmcstat_stats_reset(0); 662 if (plugins[args.pa_plugin].pl_init != NULL) 663 plugins[args.pa_plugin].pl_init(); 664 665 /* Update filter to be on a merge target. */ 666 pmcstat_changefilter(); 667 wprintw(w, "merge PMC %s", pmcstat_mergepmc ? "on" : "off"); 668 break; 669 case 'n': 670 /* Close current plugin. */ 671 if (plugins[args.pa_plugin].pl_shutdown != NULL) 672 plugins[args.pa_plugin].pl_shutdown(NULL); 673 674 /* Find next top display available. */ 675 do { 676 args.pa_plugin++; 677 if (plugins[args.pa_plugin].pl_name == NULL) 678 args.pa_plugin = 0; 679 } while (plugins[args.pa_plugin].pl_topdisplay == NULL); 680 681 /* Open new plugin. */ 682 pmcstat_stats_reset(0); 683 if (plugins[args.pa_plugin].pl_init != NULL) 684 plugins[args.pa_plugin].pl_init(); 685 wprintw(w, "switching to plugin %s", 686 plugins[args.pa_plugin].pl_name); 687 break; 688 case 'p': 689 pmcstat_pmcinfilter++; 690 if (pmcstat_pmcinfilter >= pmcstat_npmcs) 691 pmcstat_pmcinfilter = 0; 692 pmcstat_changefilter(); 693 wprintw(w, "switching to PMC %s.%d", 694 pmcstat_pmcindex_to_name(pmcstat_pmcinfilter), 695 pmcstat_pmcinfilter); 696 break; 697 case ' ': 698 pmcstat_pause = !pmcstat_pause; 699 if (pmcstat_pause) 700 wprintw(w, "pause => press space again to continue"); 701 break; 702 case 'q': 703 wprintw(w, "exiting..."); 704 ret = 1; 705 break; 706 default: 707 if (plugins[args.pa_plugin].pl_topkeypress != NULL) 708 if (plugins[args.pa_plugin].pl_topkeypress(c, (void *)w)) 709 ret = 1; 710 } 711 712 wrefresh(w); 713 delwin(w); 714 return ret; 715 } 716 717 718 /* 719 * Top mode display. 720 */ 721 722 void 723 pmcstat_display_log(void) 724 { 725 726 pmcstat_refresh_top(); 727 728 /* Reset everything if delta mode. */ 729 if (args.pa_topmode == PMCSTAT_TOP_DELTA) { 730 if (plugins[args.pa_plugin].pl_shutdown != NULL) 731 plugins[args.pa_plugin].pl_shutdown(NULL); 732 pmcstat_stats_reset(0); 733 if (plugins[args.pa_plugin].pl_init != NULL) 734 plugins[args.pa_plugin].pl_init(); 735 } 736 } 737 738 /* 739 * Configure a plugins. 740 */ 741 742 void 743 pmcstat_pluginconfigure_log(char *opt) 744 { 745 746 if (strncmp(opt, "threshold=", 10) == 0) { 747 pmcstat_threshold = atof(opt+10); 748 } else { 749 if (plugins[args.pa_plugin].pl_configure != NULL) { 750 if (!plugins[args.pa_plugin].pl_configure(opt)) 751 err(EX_USAGE, 752 "ERROR: unknown option <%s>.", opt); 753 } 754 } 755 } 756 757 void 758 pmcstat_log_shutdown_logging(void) 759 { 760 761 pmcstat_shutdown_logging(&args, plugins, &pmcstat_stats); 762 } 763 764 void 765 pmcstat_log_initialize_logging(void) 766 { 767 768 pmcstat_initialize_logging(&pmcstat_kernproc, 769 &args, plugins, &pmcstat_npmcs, &pmcstat_mergepmc); 770 } 771