perf session: Use perf_evlist__sample_type more extensively

index 69b1c11..7c88a24 100644
@@ -249,8 +249,9 @@ static int process_read_event(struct perf_tool *tool,
 static int perf_report__setup_sample_type(struct perf_report *rep)
 {
 	struct perf_session *self = rep->session;
+	u64 sample_type = perf_evlist__sample_type(self->evlist);
 
-	if (!self->fd_pipe && !(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
+	if (!self->fd_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
 		if (sort__has_parent) {
 			ui__error("Selected --sort parent, but no "
 				    "callchain data. Did you call "

@@ -274,7 +275,7 @@ static int perf_report__setup_sample_type(struct perf_report *rep)
 
 	if (sort__branch_mode == 1) {
 		if (!self->fd_pipe &&
-		    !(self->sample_type & PERF_SAMPLE_BRANCH_STACK)) {
+		    !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
 			ui__error("Selected -b but no branch data. "
 				  "Did you call perf record without -b?\n");
 			return -1;

index 2ea5fe4..e5032ed 100644
@@ -661,7 +661,7 @@ static int test__PERF_RECORD(void)
 	const char *cmd = "sleep";
 	const char *argv[] = { cmd, "1", NULL, };
 	char *bname;
-	u64 sample_type, prev_time = 0;
+	u64 prev_time = 0;
 	bool found_cmd_mmap = false,
 	     found_libc_mmap = false,
 	     found_vdso_mmap = false,

@@ -757,12 +757,6 @@ static int test__PERF_RECORD(void)
 	}
 
 	/*
-	 * We'll need these two to parse the PERF_SAMPLE_* fields in each
-	 * event.
-	 */
-	sample_type = perf_evlist__sample_type(evlist);
-
-	/*
 	 * Now that all is properly set up, enable the events, they will
 	 * count just on workload.pid, which will start...
 	 */

@@ -787,7 +781,7 @@ static int test__PERF_RECORD(void)
 				if (type < PERF_RECORD_MAX)
 					nr_events[type]++;
 
-				err = perf_event__parse_sample(event, sample_type,
+				err = perf_event__parse_sample(event, evsel->attr.sample_type,
 							       evsel->sample_size, true,
 							       &sample, false);
 				if (err < 0) {

index b8da60d..00e180e 100644
@@ -23,12 +23,20 @@ int perf_session__parse_sample(struct perf_session *session,
 	struct perf_evsel *first;
 	first = list_entry(session->evlist->entries.next, struct perf_evsel, node);
 
-	return perf_event__parse_sample(event, session->sample_type,
+	return perf_event__parse_sample(event, first->attr.sample_type,
 					first->sample_size,
 					session->sample_id_all, sample,
 					session->header.needs_swap);
 }
 
+int perf_session__synthesize_sample(struct perf_session *session,
+				    union perf_event *event,
+				    const struct perf_sample *sample)
+{
+	return perf_event__synthesize_sample(event, perf_evlist__sample_type(session->evlist),
+					     sample, session->header.needs_swap);
+}
+
 static int perf_session__open(struct perf_session *self, bool force)
 {
 	struct stat input_stat;

@@ -95,7 +103,6 @@ out_close:
 
 void perf_session__update_sample_type(struct perf_session *self)
 {
-	self->sample_type = perf_evlist__sample_type(self->evlist);
 	self->sample_id_all = perf_evlist__sample_id_all(self->evlist);
 	self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist);
 	self->host_machine.id_hdr_size = self->id_hdr_size;

@@ -877,16 +884,18 @@ static void perf_session__print_tstamp(struct perf_session *session,
 				       union perf_event *event,
 				       struct perf_sample *sample)
 {
+	u64 sample_type = perf_evlist__sample_type(session->evlist);
+
 	if (event->header.type != PERF_RECORD_SAMPLE &&
 	    !session->sample_id_all) {
 		fputs("-1 -1 ", stdout);
 		return;
 	}
 
-	if ((session->sample_type & PERF_SAMPLE_CPU))
+	if ((sample_type & PERF_SAMPLE_CPU))
 		printf("%u ", sample->cpu);
 
-	if (session->sample_type & PERF_SAMPLE_TIME)
+	if (sample_type & PERF_SAMPLE_TIME)
 		printf("%" PRIu64 " ", sample->time);
 }
 

@@ -911,6 +920,8 @@ static void dump_event(struct perf_session *session, union perf_event *event,
 static void dump_sample(struct perf_session *session, union perf_event *event,
 			struct perf_sample *sample)
 {
+	u64 sample_type;
+
 	if (!dump_trace)
 		return;
 

@@ -918,10 +929,12 @@ static void dump_sample(struct perf_session *session, union perf_event *event,
 	       event->header.misc, sample->pid, sample->tid, sample->ip,
 	       sample->period, sample->addr);
 
-	if (session->sample_type & PERF_SAMPLE_CALLCHAIN)
+	sample_type = perf_evlist__sample_type(session->evlist);
+
+	if (sample_type & PERF_SAMPLE_CALLCHAIN)
 		callchain__printf(sample);
 
-	if (session->sample_type & PERF_SAMPLE_BRANCH_STACK)
+	if (sample_type & PERF_SAMPLE_BRANCH_STACK)
 		branch_stack__printf(sample);
 }
 

@@ -1018,7 +1031,7 @@ static int perf_session__preprocess_sample(struct perf_session *session,
 					   union perf_event *event, struct perf_sample *sample)
 {
 	if (event->header.type != PERF_RECORD_SAMPLE ||
-	    !(session->sample_type & PERF_SAMPLE_CALLCHAIN))
+	    !(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
 		return 0;
 
 	if (!ip_callchain__valid(sample->callchain, event)) {

@@ -1401,9 +1414,9 @@ int perf_session__process_events(struct perf_session *self,
 	return err;
 }
 
-bool perf_session__has_traces(struct perf_session *self, const char *msg)
+bool perf_session__has_traces(struct perf_session *session, const char *msg)
 {
-	if (!(self->sample_type & PERF_SAMPLE_RAW)) {
+	if (!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_RAW)) {
 		pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
 		return false;
 	}

index 4d549e2..c45ce43 100644
@@ -41,7 +41,6 @@ struct perf_session {
 	 *	  perf.data file.
 	 */
 	struct hists		hists;
-	u64			sample_type;
 	int			fd;
 	bool			fd_pipe;
 	bool			repipe;

@@ -133,13 +132,9 @@ int perf_session__parse_sample(struct perf_session *session,
 			       const union perf_event *event,
 			       struct perf_sample *sample);
 
-static inline int perf_session__synthesize_sample(struct perf_session *session,
-						  union perf_event *event,
-						  const struct perf_sample *sample)
-{
-	return perf_event__synthesize_sample(event, session->sample_type,
-					     sample, session->header.needs_swap);
-}
+int perf_session__synthesize_sample(struct perf_session *session,
+				    union perf_event *event,
+				    const struct perf_sample *sample);
 
 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
 					    unsigned int type);