diff options
Diffstat (limited to 'tools/perf/util/build-id.c')
-rw-r--r-- | tools/perf/util/build-id.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c new file mode 100644 index 00000000..a91cd99f --- /dev/null +++ b/tools/perf/util/build-id.c @@ -0,0 +1,82 @@ +/* + * build-id.c + * + * build-id support + * + * Copyright (C) 2009, 2010 Red Hat Inc. + * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com> + */ +#include "util.h" +#include <stdio.h> +#include "build-id.h" +#include "event.h" +#include "symbol.h" +#include <linux/kernel.h> +#include "debug.h" + +static int build_id__mark_dso_hit(union perf_event *event, + struct perf_sample *sample __used, + struct perf_evsel *evsel __used, + struct perf_session *session) +{ + struct addr_location al; + u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; + struct thread *thread = perf_session__findnew(session, event->ip.pid); + + if (thread == NULL) { + pr_err("problem processing %d event, skipping it.\n", + event->header.type); + return -1; + } + + thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, + event->ip.pid, event->ip.ip, &al); + + if (al.map != NULL) + al.map->dso->hit = 1; + + return 0; +} + +static int perf_event__exit_del_thread(union perf_event *event, + struct perf_sample *sample __used, + struct perf_session *session) +{ + struct thread *thread = perf_session__findnew(session, event->fork.tid); + + dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, + event->fork.ppid, event->fork.ptid); + + if (thread) { + rb_erase(&thread->rb_node, &session->threads); + session->last_match = NULL; + thread__delete(thread); + } + + return 0; +} + +struct perf_event_ops build_id__mark_dso_hit_ops = { + .sample = build_id__mark_dso_hit, + .mmap = perf_event__process_mmap, + .fork = perf_event__process_task, + .exit = perf_event__exit_del_thread, +}; + +char *dso__build_id_filename(struct dso *self, char *bf, size_t size) +{ + char build_id_hex[BUILD_ID_SIZE * 2 + 1]; + + if (!self->has_build_id) + return NULL; + + build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex); + if (bf == NULL) { + if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir, + build_id_hex, build_id_hex + 2) < 0) + return NULL; + } else + snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir, + build_id_hex, build_id_hex + 2); + return bf; +} |