1 files changed, 175 insertions, 66 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index cf1fe01b7e89..1fc0c628683e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1,4 +1,5 @@
 #include <linux/kernel.h>
+#include <traceevent/event-parse.h>
 
 #include <byteswap.h>
 #include <unistd.h>
@@ -12,7 +13,6 @@
 #include "sort.h"
 #include "util.h"
 #include "cpumap.h"
-#include "event-parse.h"
 #include "perf_regs.h"
 #include "vdso.h"
 
@@ -24,7 +24,7 @@ static int perf_session__open(struct perf_session *self, bool force)
 		self->fd_pipe = true;
 		self->fd = STDIN_FILENO;
 
-		if (perf_session__read_header(self, self->fd) < 0)
+		if (perf_session__read_header(self) < 0)
 			pr_err("incompatible file format (rerun with -v to learn more)");
 
 		return 0;
@@ -56,7 +56,7 @@ static int perf_session__open(struct perf_session *self, bool force)
 		goto out_close;
 	}
 
-	if (perf_session__read_header(self, self->fd) < 0) {
+	if (perf_session__read_header(self) < 0) {
 		pr_err("incompatible file format (rerun with -v to learn more)");
 		goto out_close;
 	}
@@ -71,6 +71,11 @@ static int perf_session__open(struct perf_session *self, bool force)
 		goto out_close;
 	}
 
+	if (!perf_evlist__valid_read_format(self->evlist)) {
+		pr_err("non matching read_format");
+		goto out_close;
+	}
+
 	self->size = input_stat.st_size;
 	return 0;
 
@@ -193,7 +198,9 @@ void perf_session__delete(struct perf_session *self)
 	vdso__exit();
 }
 
-static int process_event_synth_tracing_data_stub(union perf_event *event
+static int process_event_synth_tracing_data_stub(struct perf_tool *tool
+						 __maybe_unused,
+						 union perf_event *event
 						 __maybe_unused,
 						 struct perf_session *session
 						__maybe_unused)
@@ -202,7 +209,8 @@ static int process_event_synth_tracing_data_stub(union perf_event *event
 	return 0;
 }
 
-static int process_event_synth_attr_stub(union perf_event *event __maybe_unused,
+static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
+					 union perf_event *event __maybe_unused,
 					 struct perf_evlist **pevlist
 					 __maybe_unused)
 {
@@ -238,18 +246,11 @@ static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
 	return 0;
 }
 
-static int process_event_type_stub(struct perf_tool *tool __maybe_unused,
-				   union perf_event *event __maybe_unused)
-{
-	dump_printf(": unhandled!\n");
-	return 0;
-}
-
 static int process_finished_round(struct perf_tool *tool,
 				  union perf_event *event,
 				  struct perf_session *session);
 
-static void perf_tool__fill_defaults(struct perf_tool *tool)
+void perf_tool__fill_defaults(struct perf_tool *tool)
 {
 	if (tool->sample == NULL)
 		tool->sample = process_event_sample_stub;
@@ -271,8 +272,6 @@ static void perf_tool__fill_defaults(struct perf_tool *tool)
 		tool->unthrottle = process_event_stub;
 	if (tool->attr == NULL)
 		tool->attr = process_event_synth_attr_stub;
-	if (tool->event_type == NULL)
-		tool->event_type = process_event_type_stub;
 	if (tool->tracing_data == NULL)
 		tool->tracing_data = process_event_synth_tracing_data_stub;
 	if (tool->build_id == NULL)
@@ -496,7 +495,7 @@ static int perf_session_deliver_event(struct perf_session *session,
 				      u64 file_offset);
 
 static int flush_sample_queue(struct perf_session *s,
-			       struct perf_tool *tool)
+		       struct perf_tool *tool)
 {
 	struct ordered_samples *os = &s->ordered_samples;
 	struct list_head *head = &os->samples;
@@ -644,7 +643,7 @@ static void __queue_event(struct sample_queue *new, struct perf_session *s)
 
 #define MAX_SAMPLE_BUFFER	(64 * 1024 / sizeof(struct sample_queue))
 
-static int perf_session_queue_event(struct perf_session *s, union perf_event *event,
+int perf_session_queue_event(struct perf_session *s, union perf_event *event,
 				    struct perf_sample *sample, u64 file_offset)
 {
 	struct ordered_samples *os = &s->ordered_samples;
@@ -740,7 +739,7 @@ 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);
+	u64 sample_type = __perf_evlist__combined_sample_type(session->evlist);
 
 	if (event->header.type != PERF_RECORD_SAMPLE &&
 	    !perf_evlist__sample_id_all(session->evlist)) {
@@ -755,6 +754,36 @@ static void perf_session__print_tstamp(struct perf_session *session,
 		printf("%" PRIu64 " ", sample->time);
 }
 
+static void sample_read__printf(struct perf_sample *sample, u64 read_format)
+{
+	printf("... sample_read:\n");
+
+	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+		printf("...... time enabled %016" PRIx64 "\n",
+		       sample->read.time_enabled);
+
+	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+		printf("...... time running %016" PRIx64 "\n",
+		       sample->read.time_running);
+
+	if (read_format & PERF_FORMAT_GROUP) {
+		u64 i;
+
+		printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
+
+		for (i = 0; i < sample->read.group.nr; i++) {
+			struct sample_read_value *value;
+
+			value = &sample->read.group.values[i];
+			printf("..... id %016" PRIx64
+			       ", value %016" PRIx64 "\n",
+			       value->id, value->value);
+		}
+	} else
+		printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
+			sample->read.one.id, sample->read.one.value);
+}
+
 static void dump_event(struct perf_session *session, union perf_event *event,
 		       u64 file_offset, struct perf_sample *sample)
 {
@@ -804,11 +833,15 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
 
 	if (sample_type & PERF_SAMPLE_DATA_SRC)
 		printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
+
+	if (sample_type & PERF_SAMPLE_READ)
+		sample_read__printf(sample, evsel->attr.read_format);
 }
 
 static struct machine *
 	perf_session__find_machine_for_cpumode(struct perf_session *session,
-					       union perf_event *event)
+					       union perf_event *event,
+					       struct perf_sample *sample)
 {
 	const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
@@ -820,7 +853,7 @@ static struct machine *
 		if (event->header.type == PERF_RECORD_MMAP)
 			pid = event->mmap.pid;
 		else
-			pid = event->ip.pid;
+			pid = sample->pid;
 
 		return perf_session__findnew_machine(session, pid);
 	}
@@ -828,6 +861,75 @@ static struct machine *
 	return &session->machines.host;
 }
 
+static int deliver_sample_value(struct perf_session *session,
+				struct perf_tool *tool,
+				union perf_event *event,
+				struct perf_sample *sample,
+				struct sample_read_value *v,
+				struct machine *machine)
+{
+	struct perf_sample_id *sid;
+
+	sid = perf_evlist__id2sid(session->evlist, v->id);
+	if (sid) {
+		sample->id     = v->id;
+		sample->period = v->value - sid->period;
+		sid->period    = v->value;
+	}
+
+	if (!sid || sid->evsel == NULL) {
+		++session->stats.nr_unknown_id;
+		return 0;
+	}
+
+	return tool->sample(tool, event, sample, sid->evsel, machine);
+}
+
+static int deliver_sample_group(struct perf_session *session,
+				struct perf_tool *tool,
+				union  perf_event *event,
+				struct perf_sample *sample,
+				struct machine *machine)
+{
+	int ret = -EINVAL;
+	u64 i;
+
+	for (i = 0; i < sample->read.group.nr; i++) {
+		ret = deliver_sample_value(session, tool, event, sample,
+					   &sample->read.group.values[i],
+					   machine);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int
+perf_session__deliver_sample(struct perf_session *session,
+			     struct perf_tool *tool,
+			     union  perf_event *event,
+			     struct perf_sample *sample,
+			     struct perf_evsel *evsel,
+			     struct machine *machine)
+{
+	/* We know evsel != NULL. */
+	u64 sample_type = evsel->attr.sample_type;
+	u64 read_format = evsel->attr.read_format;
+
+	/* Standard sample delievery. */
+	if (!(sample_type & PERF_SAMPLE_READ))
+		return tool->sample(tool, event, sample, evsel, machine);
+
+	/* For PERF_SAMPLE_READ we have either single or group mode. */
+	if (read_format & PERF_FORMAT_GROUP)
+		return deliver_sample_group(session, tool, event, sample,
+					    machine);
+	else
+		return deliver_sample_value(session, tool, event, sample,
+					    &sample->read.one, machine);
+}
+
 static int perf_session_deliver_event(struct perf_session *session,
 				      union perf_event *event,
 				      struct perf_sample *sample,
@@ -857,7 +959,8 @@ static int perf_session_deliver_event(struct perf_session *session,
 		hists__inc_nr_events(&evsel->hists, event->header.type);
 	}
 
-	machine = perf_session__find_machine_for_cpumode(session, event);
+	machine = perf_session__find_machine_for_cpumode(session, event,
+							 sample);
 
 	switch (event->header.type) {
 	case PERF_RECORD_SAMPLE:
@@ -870,7 +973,8 @@ static int perf_session_deliver_event(struct perf_session *session,
 			++session->stats.nr_unprocessable_samples;
 			return 0;
 		}
-		return tool->sample(tool, event, sample, evsel, machine);
+		return perf_session__deliver_sample(session, tool, event,
+						    sample, evsel, machine);
 	case PERF_RECORD_MMAP:
 		return tool->mmap(tool, event, sample, machine);
 	case PERF_RECORD_COMM:
@@ -895,22 +999,6 @@ static int perf_session_deliver_event(struct perf_session *session,
 	}
 }
 
-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 ||
-	    !(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
-		return 0;
-
-	if (!ip_callchain__valid(sample->callchain, event)) {
-		pr_debug("call-chain problem with event, skipping it.\n");
-		++session->stats.nr_invalid_chains;
-		session->stats.total_invalid_chains += sample->period;
-		return -EINVAL;
-	}
-	return 0;
-}
-
 static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
 					    struct perf_tool *tool, u64 file_offset)
 {
@@ -921,16 +1009,14 @@ static int perf_session__process_user_event(struct perf_session *session, union
 	/* These events are processed right away */
 	switch (event->header.type) {
 	case PERF_RECORD_HEADER_ATTR:
-		err = tool->attr(event, &session->evlist);
+		err = tool->attr(tool, event, &session->evlist);
 		if (err == 0)
 			perf_session__set_id_hdr_size(session);
 		return err;
-	case PERF_RECORD_HEADER_EVENT_TYPE:
-		return tool->event_type(tool, event);
 	case PERF_RECORD_HEADER_TRACING_DATA:
 		/* setup for reading amidst mmap */
 		lseek(session->fd, file_offset, SEEK_SET);
-		return tool->tracing_data(event, session);
+		return tool->tracing_data(tool, event, session);
 	case PERF_RECORD_HEADER_BUILD_ID:
 		return tool->build_id(tool, event, session);
 	case PERF_RECORD_FINISHED_ROUND:
@@ -975,10 +1061,6 @@ static int perf_session__process_event(struct perf_session *session,
 	if (ret)
 		return ret;
 
-	/* Preprocess sample records - precheck callchains */
-	if (perf_session__preprocess_sample(session, event, &sample))
-		return 0;
-
 	if (tool->ordered_samples) {
 		ret = perf_session_queue_event(session, event, &sample,
 					       file_offset);
@@ -999,7 +1081,7 @@ void perf_event_header__bswap(struct perf_event_header *self)
 
 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
 {
-	return machine__findnew_thread(&session->machines.host, pid);
+	return machine__findnew_thread(&session->machines.host, 0, pid);
 }
 
 static struct thread *perf_session__register_idle_thread(struct perf_session *self)
@@ -1091,8 +1173,10 @@ more:
 		perf_event_header__bswap(&event->header);
 
 	size = event->header.size;
-	if (size == 0)
-		size = 8;
+	if (size < sizeof(struct perf_event_header)) {
+		pr_err("bad event header size\n");
+		goto out_err;
+	}
 
 	if (size > cur_size) {
 		void *new = realloc(buf, size);
@@ -1161,8 +1245,12 @@ fetch_mmaped_event(struct perf_session *session,
 	if (session->header.needs_swap)
 		perf_event_header__bswap(&event->header);
 
-	if (head + event->header.size > mmap_size)
+	if (head + event->header.size > mmap_size) {
+		/* We're not fetching the event so swap back again */
+		if (session->header.needs_swap)
+			perf_event_header__bswap(&event->header);
 		return NULL;
+	}
 
 	return event;
 }
@@ -1242,7 +1330,7 @@ more:
 
 	size = event->header.size;
 
-	if (size == 0 ||
+	if (size < sizeof(struct perf_event_header) ||
 	    perf_session__process_event(session, event, tool, file_pos) < 0) {
 		pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
 		       file_offset + head, event->header.size,
@@ -1295,12 +1383,15 @@ int perf_session__process_events(struct perf_session *self,
 
 bool perf_session__has_traces(struct perf_session *session, const char *msg)
 {
-	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;
+	struct perf_evsel *evsel;
+
+	list_for_each_entry(evsel, &session->evlist->entries, node) {
+		if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
+			return true;
 	}
 
-	return true;
+	pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
+	return false;
 }
 
 int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
@@ -1383,13 +1474,18 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
 
 void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
 			  struct perf_sample *sample, struct machine *machine,
-			  int print_sym, int print_dso, int print_symoffset)
+			  unsigned int print_opts, unsigned int stack_depth)
 {
 	struct addr_location al;
 	struct callchain_cursor_node *node;
-
-	if (perf_event__preprocess_sample(event, machine, &al, sample,
-					  NULL) < 0) {
+	int print_ip = print_opts & PRINT_IP_OPT_IP;
+	int print_sym = print_opts & PRINT_IP_OPT_SYM;
+	int print_dso = print_opts & PRINT_IP_OPT_DSO;
+	int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
+	int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
+	char s = print_oneline ? ' ' : '\t';
+
+	if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 		error("problem processing %d event, skipping it.\n",
 			event->header.type);
 		return;
@@ -1397,37 +1493,50 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
 
 	if (symbol_conf.use_callchain && sample->callchain) {
 
-
 		if (machine__resolve_callchain(machine, evsel, al.thread,
-					       sample, NULL) != 0) {
+					       sample, NULL, NULL) != 0) {
 			if (verbose)
 				error("Failed to resolve callchain. Skipping\n");
 			return;
 		}
 		callchain_cursor_commit(&callchain_cursor);
 
-		while (1) {
+		while (stack_depth) {
 			node = callchain_cursor_current(&callchain_cursor);
 			if (!node)
 				break;
 
-			printf("\t%16" PRIx64, node->ip);
+			if (print_ip)
+				printf("%c%16" PRIx64, s, node->ip);
+
 			if (print_sym) {
 				printf(" ");
-				symbol__fprintf_symname(node->sym, stdout);
+				if (print_symoffset) {
+					al.addr = node->ip;
+					al.map  = node->map;
+					symbol__fprintf_symname_offs(node->sym, &al, stdout);
+				} else
+					symbol__fprintf_symname(node->sym, stdout);
 			}
+
 			if (print_dso) {
 				printf(" (");
 				map__fprintf_dsoname(node->map, stdout);
 				printf(")");
 			}
-			printf("\n");
+
+			if (!print_oneline)
+				printf("\n");
 
 			callchain_cursor_advance(&callchain_cursor);
+
+			stack_depth--;
 		}
 
 	} else {
-		printf("%16" PRIx64, sample->ip);
+		if (print_ip)
+			printf("%16" PRIx64, sample->ip);
+
 		if (print_sym) {
 			printf(" ");
 			if (print_symoffset)