stop_tracers modifies tp->is_done and thus must signal the condition variable tracer_wait_unblock is waiting on to monitor tp->is_done. Not doing so might cause the tool to deadlock if stop_tracers is called while a tracer thread is in tracer_wait_unblock. Signed-off-by: Robert Schiele <rschiele@xxxxxxxxx> --- blktrace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/blktrace.c b/blktrace.c index 7e64c94..3c8fb4c 100644 --- a/blktrace.c +++ b/blktrace.c @@ -1913,6 +1913,7 @@ static void stop_tracers(void) struct tracer *tp = list_entry(p, struct tracer, head); tp->is_done = 1; } + pthread_cond_broadcast(&mt_cond); } static void del_tracers(void) -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
