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 * Copyright (c) 2014 Netflix, Inc. 9 * Written by: Adrian Chadd <adrian@FreeBSD.org> 10 * 11 * Portions of this software were developed by A. Joseph Koshy under 12 * sponsorship from the FreeBSD Foundation and Google, Inc. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * Transform a hwpmc(4) log into human readable form, and into 38 * gprof(1) compatible profiles. 39 */ 40 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <sys/param.h> 45 #include <sys/endian.h> 46 #include <sys/gmon.h> 47 #include <sys/imgact_aout.h> 48 #include <sys/imgact_elf.h> 49 #include <sys/mman.h> 50 #include <sys/pmc.h> 51 #include <sys/queue.h> 52 #include <sys/socket.h> 53 #include <sys/stat.h> 54 #include <sys/wait.h> 55 56 #include <netinet/in.h> 57 58 #include <assert.h> 59 #include <err.h> 60 #include <errno.h> 61 #include <fcntl.h> 62 #include <gelf.h> 63 #include <libgen.h> 64 #include <limits.h> 65 #include <netdb.h> 66 #include <pmc.h> 67 #include <pmclog.h> 68 #include <sysexits.h> 69 #include <stdint.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <unistd.h> 74 75 #include "pmcstat.h" 76 #include "pmcstat_log.h" 77 #include "pmcpl_annotate_cg.h" 78 79 /* 80 * Record a callchain. 81 */ 82 83 void 84 pmcpl_annotate_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, 85 uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) 86 { 87 struct pmcstat_pcmap *map; 88 struct pmcstat_symbol *sym; 89 uintfptr_t newpc; 90 struct pmcstat_image *image; 91 int i; 92 char filename[PATH_MAX], funcname[PATH_MAX]; 93 unsigned sline; 94 95 (void) pmcr; (void) nsamples; (void) usermode; (void) cpu; 96 97 for (i = 0; i < (int) nsamples; i++) { 98 map = NULL; 99 sym = NULL; 100 image = NULL; 101 filename[0] = '\0'; 102 funcname[0] = '\0'; 103 sline = 0; 104 105 map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[i]); 106 if (map != NULL) { 107 assert(cc[i] >= map->ppm_lowpc && cc[i] < map->ppm_highpc); 108 image = map->ppm_image; 109 newpc = cc[i] - (map->ppm_lowpc + 110 (image->pi_vaddr - image->pi_start)); 111 sym = pmcstat_symbol_search(image, newpc); 112 } 113 114 if (map != NULL && image != NULL && sym != NULL) { 115 (void) pmcstat_image_addr2line(image, cc[i], 116 filename, sizeof(filename), &sline, funcname, sizeof(funcname)); 117 } 118 119 if (map != NULL && sym != NULL) { 120 fprintf(args.pa_graphfile, "%p %s %s:%d\n", 121 (void *)cc[i], 122 funcname, 123 filename, 124 sline); 125 } else { 126 fprintf(args.pa_graphfile, "%p <unknown> ??:0\n", 127 (void *) cc[i]); 128 } 129 } 130 fprintf(args.pa_graphfile, "--\n"); 131 } 132