[PATCH 7/7] perf hists browser: Do not exit on tab key with single event

[Arnaldo Carvalho de Melo <acme@infradead.org>]

From: David Ahern <dsahern@gmail.com>

TUI help states for multiple event sessions the TAB/UNTAB keys are used
to switch events. For single event sessions (e.g., the default) the tab
key currently causes the tui to exit. Change that to do nothing since
there is not no second event to switch to.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1319045867-12728-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/ui/browsers/hists.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index 94e1ab0..d762875 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -864,6 +864,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 		switch (key) {
 		case NEWT_KEY_TAB:
 		case NEWT_KEY_UNTAB:
+			if (nr_events == 1)
+				continue;
 			/*
 			 * Exit the browser, let hists__browser_tree
 			 * go to the next or previous
-- 
1.6.2.5