Merge branch 'perf' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core

tools/perf/Documentation/perf-buildid-cache.txt

@@ -8,7 +8,7 @@ perf-buildid-cache - Manage build-id cache.
 SYNOPSIS
 --------
 [verse]
-'perf buildid-list <options>'
+'perf buildid-cache <options>'
 
 DESCRIPTION
 -----------
@@ -30,4 +30,4 @@ OPTIONS
 
 SEE ALSO
 --------
-linkperf:perf-record[1], linkperf:perf-report[1]
+linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-buildid-list[1]

tools/perf/Documentation/perf-inject.txt

@@ -0,0 +1,35 @@
+perf-inject(1)
+==============
+
+NAME
+----
+perf-inject - Filter to augment the events stream with additional information
+
+SYNOPSIS
+--------
+[verse]
+'perf inject <options>'
+
+DESCRIPTION
+-----------
+perf-inject reads a perf-record event stream and repipes it to stdout.  At any
+point the processing code can inject other events into the event stream - in
+this case build-ids (-b option) are read and injected as needed into the event
+stream.
+
+Build-ids are just the first user of perf-inject - potentially anything that
+needs userspace processing to augment the events stream with additional
+information could make use of this facility.
+
+OPTIONS
+-------
+-b::
+--build-ids=::
+        Inject build-ids into the output stream
+-v::
+--verbose::
+	Be more verbose.
+
+SEE ALSO
+--------
+linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-archive[1]

tools/perf/builtin-inject.c

@@ -204,7 +204,7 @@ static const char * const report_usage[] = {
 };
 
 static const struct option options[] = {
-	OPT_BOOLEAN('b', "inject build-ids", &inject_build_ids,
+	OPT_BOOLEAN('b', "build-ids", &inject_build_ids,
 		    "Inject build-ids into the output stream"),
 	OPT_INCR('v', "verbose", &verbose,
 		 "be more verbose (show build ids, etc)"),

tools/perf/builtin-record.c

@@ -560,11 +560,12 @@ static int __cmd_record(int argc, const char **argv)
 			return err;
 	}
 
-	if (raw_samples) {
+	if (raw_samples && have_tracepoints(attrs, nr_counters)) {
 		perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 	} else {
 		for (i = 0; i < nr_counters; i++) {
-			if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
+			if (attrs[i].sample_type & PERF_SAMPLE_RAW &&
+				attrs[i].type == PERF_TYPE_TRACEPOINT) {
 				perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 				break;
 			}
@@ -662,19 +663,25 @@ static int __cmd_record(int argc, const char **argv)
 			return err;
 		}
 
-		err = event__synthesize_tracing_data(output, attrs,
+		if (have_tracepoints(attrs, nr_counters)) {
-						     nr_counters,
+			/*
-						     process_synthesized_event,
+			 * FIXME err <= 0 here actually means that
-						     session);
+			 * there were no tracepoints so its not really
-		/*
+			 * an error, just that we don't need to
-		 * FIXME err <= 0 here actually means that there were no tracepoints
+			 * synthesize anything.  We really have to
-		 * so its not really an error, just that we don't need to synthesize
+			 * return this more properly and also
-		 * anything.
+			 * propagate errors that now are calling die()
-		 * We really have to return this more properly and also propagate
+			 */
-		 * errors that now are calling die()
+			err = event__synthesize_tracing_data(output, attrs,
-		 */
+							     nr_counters,
-		if (err > 0)
+							     process_synthesized_event,
+							     session);
+			if (err <= 0) {
+				pr_err("Couldn't record tracing data.\n");
+				return err;
+			}
 			advance_output(err);
+		}
 	}
 
 	machine = perf_session__find_host_machine(session);

tools/perf/command-list.txt

@@ -8,6 +8,7 @@ perf-bench			mainporcelain common
 perf-buildid-cache		mainporcelain common
 perf-buildid-list		mainporcelain common
 perf-diff			mainporcelain common
+perf-inject			mainporcelain common
 perf-list			mainporcelain common
 perf-sched			mainporcelain common
 perf-record			mainporcelain common

tools/perf/util/event.c

@@ -713,6 +713,7 @@ int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
 		array++;
 	}
 
+	data->id = -1ULL;
 	if (type & PERF_SAMPLE_ID) {
 		data->id = *array;
 		array++;

tools/perf/util/header.c

@@ -436,7 +436,6 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
 		trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
 	}
 
-
 	if (perf_header__has_feat(self, HEADER_BUILD_ID)) {
 		struct perf_file_section *buildid_sec;
 
@@ -923,6 +922,14 @@ perf_header__find_attr(u64 id, struct perf_header *header)
 {
 	int i;
 
+	/*
+	 * We set id to -1 if the data file doesn't contain sample
+	 * ids. Check for this and avoid walking through the entire
+	 * list of ids which may be large.
+	 */
+	if (id == -1ULL)
+		return NULL;
+
 	for (i = 0; i < header->attrs; i++) {
 		struct perf_header_attr *attr = header->attr[i];
 		int j;

tools/perf/util/parse-events.h

@@ -13,6 +13,7 @@ struct tracepoint_path {
 };
 
 extern struct tracepoint_path *tracepoint_id_to_path(u64 config);
+extern bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events);
 
 extern int			nr_counters;
 

tools/perf/util/trace-event-info.c

@@ -487,6 +487,11 @@ get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
 	return nr_tracepoints > 0 ? path.next : NULL;
 }
 
+bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events)
+{
+	return get_tracepoints_path(pattrs, nb_events) ? true : false;
+}
+
 int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
 {
 	char buf[BUFSIZ];