perf top: Join the display thread on exit

We create the display thread, but never join it. It gives
the display thread a chance to quit and cleanup properly.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1407747014-18394-12-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 4fb6f726271cd2bed5583feba018f2dc52e69658..10fc7e844872521f1a36e018932ada5c30981115 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -965,7 +965,7 @@ static int __cmd_top(struct perf_top *top)
                param.sched_priority = top->realtime_prio;
                if (sched_setscheduler(0, SCHED_FIFO, &param)) {
                        ui__error("Could not set realtime priority.\n");
-                       goto out_delete;
+                       goto out_join;
                }
        }
 
@@ -979,6 +979,8 @@ static int __cmd_top(struct perf_top *top)
        }
 
        ret = 0;
+out_join:
+       pthread_join(thread, NULL);
 out_delete:
        perf_session__delete(top->session);
        top->session = NULL;