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 /* ANDROID_CHANGE_BEGIN */ 15 #ifdef __APPLE__ 16 #include "include/linux/kernel.h" 17 #endif 18 /* ANDROID_CHANGE_END */ 19 #include "debug.h" 20 21 static int build_id__mark_dso_hit(union perf_event *event, 22 struct perf_sample *sample __used, 23 struct perf_evsel *evsel __used, 24 struct perf_session *session) 25 { 26 struct addr_location al; 27 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 28 struct thread *thread = perf_session__findnew(session, event->ip.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, session, cpumode, MAP__FUNCTION, 37 event->ip.pid, event->ip.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(union perf_event *event, 46 struct perf_sample *sample __used, 47 struct perf_session *session) 48 { 49 struct thread *thread = perf_session__findnew(session, event->fork.tid); 50 51 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, 52 event->fork.ppid, event->fork.ptid); 53 54 if (thread) { 55 rb_erase(&thread->rb_node, &session->threads); 56 session->last_match = NULL; 57 thread__delete(thread); 58 } 59 60 return 0; 61 } 62 63 struct perf_event_ops build_id__mark_dso_hit_ops = { 64 .sample = build_id__mark_dso_hit, 65 .mmap = perf_event__process_mmap, 66 .fork = perf_event__process_task, 67 .exit = perf_event__exit_del_thread, 68 }; 69 70 char *dso__build_id_filename(struct dso *self, char *bf, size_t size) 71 { 72 char build_id_hex[BUILD_ID_SIZE * 2 + 1]; 73 74 if (!self->has_build_id) 75 return NULL; 76 77 build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex); 78 if (bf == NULL) { 79 if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir, 80 build_id_hex, build_id_hex + 2) < 0) 81 return NULL; 82 } else 83 snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir, 84 build_id_hex, build_id_hex + 2); 85 return bf; 86 } 87
