1 files changed, 79 insertions, 0 deletions
diff --git a/kernel/tools/perf/util/strlist.h b/kernel/tools/perf/util/strlist.h
new file mode 100644
index 000000000..5c7f87069
--- /dev/null
+++ b/kernel/tools/perf/util/strlist.h
@@ -0,0 +1,79 @@
+#ifndef __PERF_STRLIST_H
+#define __PERF_STRLIST_H
+
+#include <linux/rbtree.h>
+#include <stdbool.h>
+
+#include "rblist.h"
+
+struct str_node {
+	struct rb_node rb_node;
+	const char     *s;
+};
+
+struct strlist {
+	struct rblist rblist;
+	bool	       dupstr;
+};
+
+struct strlist *strlist__new(bool dupstr, const char *slist);
+void strlist__delete(struct strlist *slist);
+
+void strlist__remove(struct strlist *slist, struct str_node *sn);
+int strlist__load(struct strlist *slist, const char *filename);
+int strlist__add(struct strlist *slist, const char *str);
+
+struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx);
+struct str_node *strlist__find(struct strlist *slist, const char *entry);
+
+static inline bool strlist__has_entry(struct strlist *slist, const char *entry)
+{
+	return strlist__find(slist, entry) != NULL;
+}
+
+static inline bool strlist__empty(const struct strlist *slist)
+{
+	return rblist__empty(&slist->rblist);
+}
+
+static inline unsigned int strlist__nr_entries(const struct strlist *slist)
+{
+	return rblist__nr_entries(&slist->rblist);
+}
+
+/* For strlist iteration */
+static inline struct str_node *strlist__first(struct strlist *slist)
+{
+	struct rb_node *rn = rb_first(&slist->rblist.entries);
+	return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
+}
+static inline struct str_node *strlist__next(struct str_node *sn)
+{
+	struct rb_node *rn;
+	if (!sn)
+		return NULL;
+	rn = rb_next(&sn->rb_node);
+	return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
+}
+
+/**
+ * strlist_for_each      - iterate over a strlist
+ * @pos:	the &struct str_node to use as a loop cursor.
+ * @slist:	the &struct strlist for loop.
+ */
+#define strlist__for_each(pos, slist)	\
+	for (pos = strlist__first(slist); pos; pos = strlist__next(pos))
+
+/**
+ * strlist_for_each_safe - iterate over a strlist safe against removal of
+ *                         str_node
+ * @pos:	the &struct str_node to use as a loop cursor.
+ * @n:		another &struct str_node to use as temporary storage.
+ * @slist:	the &struct strlist for loop.
+ */
+#define strlist__for_each_safe(pos, n, slist)	\
+	for (pos = strlist__first(slist), n = strlist__next(pos); pos;\
+	     pos = n, n = strlist__next(n))
+
+int strlist__parse_list(struct strlist *slist, const char *s);
+#endif /* __PERF_STRLIST_H */