perf tools: Introduce reset_output_field()

The reset_output_field() function is for clearing output field
settings and will be used for test code in later patch.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1400480762-22852-19-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

4 files changed, 36 insertions, 0 deletions

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 61cf31e094f3..4484f5bd1b14 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -459,6 +459,23 @@ next:
         }
 }
 
+void perf_hpp__reset_output_field(void)
+{
+        struct perf_hpp_fmt *fmt, *tmp;
+
+        /* reset output fields */
+        perf_hpp__for_each_format_safe(fmt, tmp) {
+                list_del_init(&fmt->list);
+                list_del_init(&fmt->sort_list);
+        }
+
+        /* reset sort keys */
+        perf_hpp__for_each_sort_list_safe(fmt, tmp) {
+                list_del_init(&fmt->list);
+                list_del_init(&fmt->sort_list);
+        }
+}
+
 /*
  * See hists__fprintf to match the column widths
  */
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 034db761630e..a8418d19808d 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -174,9 +174,15 @@ extern struct list_head perf_hpp__sort_list;
 #define perf_hpp__for_each_format(format) \
         list_for_each_entry(format, &perf_hpp__list, list)
 
+#define perf_hpp__for_each_format_safe(format, tmp)     \
+        list_for_each_entry_safe(format, tmp, &perf_hpp__list, list)
+
 #define perf_hpp__for_each_sort_list(format) \
         list_for_each_entry(format, &perf_hpp__sort_list, sort_list)
 
+#define perf_hpp__for_each_sort_list_safe(format, tmp)  \
+        list_for_each_entry_safe(format, tmp, &perf_hpp__sort_list, sort_list)
+
 extern struct perf_hpp_fmt perf_hpp__format[];
 
 enum {
@@ -197,6 +203,7 @@ void perf_hpp__column_register(struct perf_hpp_fmt *format);
 void perf_hpp__column_enable(unsigned col);
 void perf_hpp__register_sort_field(struct perf_hpp_fmt *format);
 void perf_hpp__setup_output_field(void);
+void perf_hpp__reset_output_field(void);
 void perf_hpp__append_sort_keys(void);
 
 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index d9132069d3b1..901b9bece2ee 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1573,3 +1573,14 @@ int setup_sorting(void)
 
         return 0;
 }
+
+void reset_output_field(void)
+{
+        sort__need_collapse = 0;
+        sort__has_parent = 0;
+        sort__has_sym = 0;
+        sort__has_dso = 0;
+
+        reset_dimensions();
+        perf_hpp__reset_output_field();
+}
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index f5a831c3d0fb..5f38d925e92f 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -194,6 +194,7 @@ extern struct list_head hist_entry__sort_list;
 
 int setup_sorting(void);
 int setup_output_field(void);
+void reset_output_field(void);
 extern int sort_dimension__add(const char *);
 void sort__setup_elide(FILE *fp);