zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/tools/perf/util/build-id.c b/ap/os/linux/linux-3.4.x/tools/perf/util/build-id.c
new file mode 100644
index 0000000..dff9c7a
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/tools/perf/util/build-id.c
@@ -0,0 +1,86 @@
+/*
+ * 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"
+#include "session.h"
+#include "tool.h"
+
+static int build_id__mark_dso_hit(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct perf_evsel *evsel __used,
+ struct machine *machine)
+{
+ struct addr_location al;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct thread *thread = machine__findnew_thread(machine, 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, machine, cpumode, MAP__FUNCTION,
+ event->ip.ip, &al);
+
+ if (al.map != NULL)
+ al.map->dso->hit = 1;
+
+ return 0;
+}
+
+static int perf_event__exit_del_thread(struct perf_tool *tool __used,
+ union perf_event *event,
+ struct perf_sample *sample __used,
+ struct machine *machine)
+{
+ struct thread *thread = machine__findnew_thread(machine, 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, &machine->threads);
+ machine->last_match = NULL;
+ thread__delete(thread);
+ }
+
+ return 0;
+}
+
+struct perf_tool 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;
+}