1 /* 2 * build-id.c 3 * 4 * build-id support 5 * 6 * Copyright (C) 2009, 2010 Red Hat Inc. 7 * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme (at) redhat.com> 8 */ 9 #include "util.h" 10 #include <stdio.h> 11 #include "build-id.h" 12 #include "event.h" 13 #include "symbol.h" 14 #include <linux/kernel.h> 15 #include "debug.h" 16 #include "session.h" 17 #include "tool.h" 18 19 int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused, 20 union perf_event *event, 21 struct perf_sample *sample, 22 struct perf_evsel *evsel __maybe_unused, 23 struct machine *machine) 24 { 25 struct addr_location al; 26 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 27 struct thread *thread = machine__findnew_thread(machine, sample->pid, 28 sample->pid); 29 30 if (thread == NULL) { 31 pr_err("problem processing %d event, skipping it.\n", 32 event->header.type); 33 return -1; 34 } 35 36 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, 37 sample->ip, &al); 38 39 if (al.map != NULL) 40 al.map->dso->hit = 1; 41 42 return 0; 43 } 44 45 static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused, 46 union perf_event *event, 47 struct perf_sample *sample 48 __maybe_unused, 49 struct machine *machine) 50 { 51 struct thread *thread = machine__findnew_thread(machine, 52 event->fork.pid, 53 event->fork.tid); 54 55 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, 56 event->fork.ppid, event->fork.ptid); 57 58 if (thread) { 59 rb_erase(&thread->rb_node, &machine->threads); 60 machine->last_match = NULL; 61 thread__delete(thread); 62 } 63 64 return 0; 65 } 66 67 struct perf_tool build_id__mark_dso_hit_ops = { 68 .sample = build_id__mark_dso_hit, 69 .mmap = perf_event__process_mmap, 70 .mmap2 = perf_event__process_mmap2, 71 .fork = perf_event__process_fork, 72 .exit = perf_event__exit_del_thread, 73 .attr = perf_event__process_attr, 74 .build_id = perf_event__process_build_id, 75 }; 76 77 int build_id__sprintf(const u8 *build_id, int len, char *bf) 78 { 79 char *bid = bf; 80 const u8 *raw = build_id; 81 int i; 82 83 for (i = 0; i < len; ++i) { 84 sprintf(bid, "%02x", *raw); 85 ++raw; 86 bid += 2; 87 } 88 89 return raw - build_id; 90 } 91 92 char *dso__build_id_filename(struct dso *self, char *bf, size_t size) 93 { 94 char build_id_hex[BUILD_ID_SIZE * 2 + 1]; 95 96 if (!self->has_build_id) 97 return NULL; 98 99 build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex); 100 if (bf == NULL) { 101 if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir, 102 build_id_hex, build_id_hex + 2) < 0) 103 return NULL; 104 } else 105 snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir, 106 build_id_hex, build_id_hex + 2); 107 return bf; 108 } 109
