1 files changed, 9 insertions, 2 deletions

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 8b091a51e4a2..a935a60d521c 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -126,13 +126,19 @@ struct perf_hpp {
 };
 
 struct perf_hpp_fmt {
-        bool cond;
         int (*header)(struct perf_hpp *hpp);
         int (*width)(struct perf_hpp *hpp);
         int (*color)(struct perf_hpp *hpp, struct hist_entry *he);
         int (*entry)(struct perf_hpp *hpp, struct hist_entry *he);
+
+        struct list_head list;
 };
 
+extern struct list_head perf_hpp__list;
+
+#define perf_hpp__for_each_format(format) \
+        list_for_each_entry(format, &perf_hpp__list, list)
+
 extern struct perf_hpp_fmt perf_hpp__format[];
 
 enum {
@@ -155,7 +161,8 @@ enum {
 };
 
 void perf_hpp__init(void);
-void perf_hpp__column_enable(unsigned col, bool enable);
+void perf_hpp__column_register(struct perf_hpp_fmt *format);
+void perf_hpp__column_enable(unsigned col);
 int hist_entry__period_snprintf(struct perf_hpp *hpp, struct hist_entry *he,
                                 bool color);