[PATCH 1/3] perf tools: Add sort__has_comm variable

[Namhyung Kim <namhyung@kernel.org>]

The sort__has_comm variable is to check whether the comm sort key is
given.  This is necessary to support thread filtering in the TUI hists
browser later.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/util/sort.c | 3 +++
 tools/perf/util/sort.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 84c6654b4065..ca23b3ba0b2f 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -27,6 +27,7 @@ int		sort__has_sym = 0;
 int		sort__has_dso = 0;
 int		sort__has_socket = 0;
 int		sort__has_thread = 0;
+int		sort__has_comm = 0;
 enum sort_mode	sort__mode = SORT_MODE__NORMAL;
 
 /*
@@ -2255,6 +2256,8 @@ static int sort_dimension__add(const char *tok, struct perf_evlist *evlist,
 			sort__has_socket = 1;
 		} else if (sd->entry == &sort_thread) {
 			sort__has_thread = 1;
+		} else if (sd->entry == &sort_comm) {
+			sort__has_comm = 1;
 		}
 
 		return __sort_dimension__add(sd, level);
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 151afc1b6c2f..3f4e35998119 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -37,6 +37,7 @@ extern int sort__has_parent;
 extern int sort__has_sym;
 extern int sort__has_socket;
 extern int sort__has_thread;
+extern int sort__has_comm;
 extern enum sort_mode sort__mode;
 extern struct sort_entry sort_comm;
 extern struct sort_entry sort_dso;
-- 
2.7.2