1 /*- 2 * Copyright (c) 2005-2007, Joseph Koshy 3 * Copyright (c) 2007 The FreeBSD Foundation 4 * Copyright (c) 2014, Adrian Chadd, Netflix Inc. 5 * All rights reserved. 6 * 7 * Portions of this software were developed by A. Joseph Koshy under 8 * sponsorship from the FreeBSD Foundation and Google, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Transform a hwpmc(4) log into human readable form, and into 34 * gprof(1) compatible profiles. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <sys/param.h> 41 #include <sys/endian.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 <err.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <gelf.h> 59 #include <libgen.h> 60 #include <limits.h> 61 #include <netdb.h> 62 #include <pmc.h> 63 #include <pmclog.h> 64 #include <sysexits.h> 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <unistd.h> 70 71 #include "pmcstat.h" 72 #include "pmcstat_log.h" 73 #include "pmcpl_annotate_cg.h" 74 75 /* 76 * Record a callchain. 77 */ 78 79 void 80 pmcpl_annotate_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, 81 uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) 82 { 83 struct pmcstat_pcmap *map; 84 struct pmcstat_symbol *sym; 85 uintfptr_t newpc; 86 struct pmcstat_image *image; 87 int i; 88 char filename[PATH_MAX], funcname[PATH_MAX]; 89 unsigned sline; 90 91 (void) pmcr; (void) nsamples; (void) usermode; (void) cpu; 92 93 for (i = 0; i < (int) nsamples; i++) { 94 map = NULL; 95 sym = NULL; 96 image = NULL; 97 filename[0] = '\0'; 98 funcname[0] = '\0'; 99 sline = 0; 100 101 map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[i]); 102 if (map != NULL) { 103 assert(cc[i] >= map->ppm_lowpc && cc[i] < map->ppm_highpc); 104 image = map->ppm_image; 105 newpc = cc[i] - (map->ppm_lowpc + 106 (image->pi_vaddr - image->pi_start)); 107 sym = pmcstat_symbol_search(image, newpc); 108 } 109 110 if (map != NULL && image != NULL && sym != NULL) { 111 (void) pmcstat_image_addr2line(image, cc[i], 112 filename, sizeof(filename), &sline, funcname, sizeof(funcname)); 113 } 114 115 if (map != NULL && sym != NULL) { 116 fprintf(args.pa_graphfile, "%p %s %s:%d\n", 117 (void *)cc[i], 118 funcname, 119 filename, 120 sline); 121 } else { 122 fprintf(args.pa_graphfile, "%p <unknown> ??:0\n", 123 (void *) cc[i]); 124 } 125 } 126 fprintf(args.pa_graphfile, "--\n"); 127 } 128