2 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/lib/include/internal/evlist.h b/tools/perf/lib/include/internal/evlist.h
index b7b43dbc9b82..448891f06e3e 100644
--- a/tools/perf/lib/include/internal/evlist.h
+++ b/tools/perf/lib/include/internal/evlist.h
@@ -2,6 +2,8 @@
 #ifndef __LIBPERF_INTERNAL_EVLIST_H
 #define __LIBPERF_INTERNAL_EVLIST_H
 
+#include <linux/list.h>
+
 struct perf_cpu_map;
 struct perf_thread_map;
 
@@ -13,4 +15,36 @@ struct perf_evlist {
 	struct perf_thread_map	*threads;
 };
 
+/**
+ * __perf_evlist__for_each_entry - iterate thru all the evsels
+ * @list: list_head instance to iterate
+ * @evsel: struct perf_evsel iterator
+ */
+#define __perf_evlist__for_each_entry(list, evsel) \
+	list_for_each_entry(evsel, list, node)
+
+/**
+ * evlist__for_each_entry - iterate thru all the evsels
+ * @evlist: perf_evlist instance to iterate
+ * @evsel: struct perf_evsel iterator
+ */
+#define perf_evlist__for_each_entry(evlist, evsel) \
+	__perf_evlist__for_each_entry(&(evlist)->entries, evsel)
+
+/**
+ * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
+ * @list: list_head instance to iterate
+ * @evsel: struct evsel iterator
+ */
+#define __perf_evlist__for_each_entry_reverse(list, evsel) \
+	list_for_each_entry_reverse(evsel, list, node)
+
+/**
+ * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
+ * @evlist: evlist instance to iterate
+ * @evsel: struct evsel iterator
+ */
+#define perf_evlist__for_each_entry_reverse(evlist, evsel) \
+	__perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
+
 #endif /* __LIBPERF_INTERNAL_EVLIST_H */
diff --git a/tools/perf/lib/include/perf/evlist.h b/tools/perf/lib/include/perf/evlist.h
index b1d8dee018d6..6d3dda743541 100644
--- a/tools/perf/lib/include/perf/evlist.h
+++ b/tools/perf/lib/include/perf/evlist.h
@@ -18,6 +18,8 @@ LIBPERF_API struct perf_evlist *perf_evlist__new(void);
 LIBPERF_API void perf_evlist__delete(struct perf_evlist *evlist);
 LIBPERF_API struct perf_evsel* perf_evlist__next(struct perf_evlist *evlist,
 						 struct perf_evsel *evsel);
+LIBPERF_API int perf_evlist__open(struct perf_evlist *evlist);
+LIBPERF_API void perf_evlist__close(struct perf_evlist *evlist);
 
 #define perf_evlist__for_each_evsel(evlist, pos)	\
 	for ((pos) = perf_evlist__next((evlist), NULL);	\