perf hists: Count number of sort keys

It'll be used for hierarchy output mode to indent entries properly.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-9-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 12223d791e9f..edbf854e8e1c 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -514,6 +514,9 @@ void perf_hpp_list__column_register(struct perf_hpp_list *list,
 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
                                         struct perf_hpp_fmt *format)
 {
+        if (perf_hpp__is_sort_entry(format) || perf_hpp__is_dynamic_entry(format))
+                list->nr_sort_keys++;
+
         list_add_tail(&format->sort_list, &list->sorts);
 }
 
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 480d2eb26001..d08e4f36f193 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -237,6 +237,7 @@ struct perf_hpp_fmt {
 struct perf_hpp_list {
         struct list_head fields;
         struct list_head sorts;
+        int nr_sort_keys;
 };
 
 extern struct perf_hpp_list perf_hpp_list;