diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 6ce6d80..a5bcf81 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -18,7 +18,7 @@
 
 static int perf_event__repipe_synth(struct perf_event_ops *ops __used,
 				    union perf_event *event,
-				    struct perf_session *session __used)
+				    struct machine *machine __used)
 {
 	uint32_t size;
 	void *buf = event;
@@ -37,10 +37,23 @@
 	return 0;
 }
 
-static int perf_event__repipe_tracing_data_synth(union perf_event *event,
-						 struct perf_session *session)
+static int perf_event__repipe_op2_synth(struct perf_event_ops *ops,
+					union perf_event *event,
+					struct perf_session *session __used)
 {
-	return perf_event__repipe_synth(NULL, event, session);
+	return perf_event__repipe_synth(ops, event, NULL);
+}
+
+static int perf_event__repipe_event_type_synth(struct perf_event_ops *ops,
+					       union perf_event *event)
+{
+	return perf_event__repipe_synth(ops, event, NULL);
+}
+
+static int perf_event__repipe_tracing_data_synth(union perf_event *event,
+						 struct perf_session *session __used)
+{
+	return perf_event__repipe_synth(NULL, event, NULL);
 }
 
 static int perf_event__repipe_attr(union perf_event *event,
@@ -52,29 +65,29 @@
 static int perf_event__repipe(struct perf_event_ops *ops,
 			      union perf_event *event,
 			      struct perf_sample *sample __used,
-			      struct perf_session *session)
+			      struct machine *machine)
 {
-	return perf_event__repipe_synth(ops, event, session);
+	return perf_event__repipe_synth(ops, event, machine);
 }
 
 static int perf_event__repipe_sample(struct perf_event_ops *ops,
 				     union perf_event *event,
 			      struct perf_sample *sample __used,
 			      struct perf_evsel *evsel __used,
-			      struct perf_session *session)
+			      struct machine *machine)
 {
-	return perf_event__repipe_synth(ops, event, session);
+	return perf_event__repipe_synth(ops, event, machine);
 }
 
 static int perf_event__repipe_mmap(struct perf_event_ops *ops,
 				   union perf_event *event,
 				   struct perf_sample *sample,
-				   struct perf_session *session)
+				   struct machine *machine)
 {
 	int err;
 
-	err = perf_event__process_mmap(ops, event, sample, session);
-	perf_event__repipe(ops, event, sample, session);
+	err = perf_event__process_mmap(ops, event, sample, machine);
+	perf_event__repipe(ops, event, sample, machine);
 
 	return err;
 }
@@ -82,12 +95,12 @@
 static int perf_event__repipe_task(struct perf_event_ops *ops,
 				   union perf_event *event,
 				   struct perf_sample *sample,
-				   struct perf_session *session)
+				   struct machine *machine)
 {
 	int err;
 
-	err = perf_event__process_task(ops, event, sample, session);
-	perf_event__repipe(ops, event, sample, session);
+	err = perf_event__process_task(ops, event, sample, machine);
+	perf_event__repipe(ops, event, sample, machine);
 
 	return err;
 }
@@ -97,7 +110,7 @@
 {
 	int err;
 
-	perf_event__repipe_synth(NULL, event, session);
+	perf_event__repipe_synth(NULL, event, NULL);
 	err = perf_event__process_tracing_data(event, session);
 
 	return err;
@@ -118,10 +131,9 @@
 }
 
 static int dso__inject_build_id(struct dso *self, struct perf_event_ops *ops,
-				struct perf_session *session)
+				struct machine *machine)
 {
 	u16 misc = PERF_RECORD_MISC_USER;
-	struct machine *machine;
 	int err;
 
 	if (dso__read_build_id(self) < 0) {
@@ -129,17 +141,11 @@
 		return -1;
 	}
 
-	machine = perf_session__find_host_machine(session);
-	if (machine == NULL) {
-		pr_err("Can't find machine for session\n");
-		return -1;
-	}
-
 	if (self->kernel)
 		misc = PERF_RECORD_MISC_KERNEL;
 
 	err = perf_event__synthesize_build_id(ops, self, misc, perf_event__repipe,
-					      machine, session);
+					      machine);
 	if (err) {
 		pr_err("Can't synthesize build_id event for %s\n", self->long_name);
 		return -1;
@@ -152,7 +158,7 @@
 				      union perf_event *event,
 				      struct perf_sample *sample,
 				      struct perf_evsel *evsel __used,
-				      struct perf_session *session)
+				      struct machine *machine)
 {
 	struct addr_location al;
 	struct thread *thread;
@@ -160,21 +166,21 @@
 
 	cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
-	thread = perf_session__findnew(session, event->ip.pid);
+	thread = machine__findnew_thread(machine, event->ip.pid);
 	if (thread == NULL) {
 		pr_err("problem processing %d event, skipping it.\n",
 		       event->header.type);
 		goto repipe;
 	}
 
-	thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
-			      event->ip.pid, event->ip.ip, &al);
+	thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
+			      event->ip.ip, &al);
 
 	if (al.map != NULL) {
 		if (!al.map->dso->hit) {
 			al.map->dso->hit = 1;
 			if (map__load(al.map, NULL) >= 0) {
-				dso__inject_build_id(al.map->dso, ops, session);
+				dso__inject_build_id(al.map->dso, ops, machine);
 				/*
 				 * If this fails, too bad, let the other side
 				 * account this as unresolved.
@@ -187,7 +193,7 @@
 	}
 
 repipe:
-	perf_event__repipe(ops, event, sample, session);
+	perf_event__repipe(ops, event, sample, machine);
 	return 0;
 }
 
@@ -198,13 +204,13 @@
 	.fork		= perf_event__repipe,
 	.exit		= perf_event__repipe,
 	.lost		= perf_event__repipe,
-	.read		= perf_event__repipe,
+	.read		= perf_event__repipe_sample,
 	.throttle	= perf_event__repipe,
 	.unthrottle	= perf_event__repipe,
 	.attr		= perf_event__repipe_attr,
-	.event_type	= perf_event__repipe_synth,
+	.event_type	= perf_event__repipe_event_type_synth,
 	.tracing_data	= perf_event__repipe_tracing_data_synth,
-	.build_id	= perf_event__repipe_synth,
+	.build_id	= perf_event__repipe_op2_synth,
 };
 
 extern volatile int session_done;