perf sort: Introduce sort__mode variable

It's used for determining current sort mode which can be one of
NORMAL, BRANCH and new MEMORY.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1364816125-12212-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index d88a2d0..cad8e37 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1155,7 +1155,7 @@
 		browser->b.refresh = hist_browser__refresh;
 		browser->b.seek = ui_browser__hists_seek;
 		browser->b.use_navkeypressed = true;
-		if (sort__branch_mode == 1)
+		if (sort__mode == SORT_MODE__BRANCH)
 			browser->has_symbols = sort_sym_from.list.next != NULL;
 		else
 			browser->has_symbols = sort_sym.list.next != NULL;
@@ -1488,7 +1488,7 @@
 		if (!browser->has_symbols)
 			goto add_exit_option;
 
-		if (sort__branch_mode == 1) {
+		if (sort__mode == SORT_MODE__BRANCH) {
 			bi = browser->he_selection->branch_info;
 			if (browser->selection != NULL &&
 			    bi &&