From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
When the trace-cmd stream is exiting, it flushes the data. But it does so in
a blocking way, where it can block when there's nothing to read. Set the
timeout of trace_stream_read() to zero in order to return immediately.
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
tracecmd/trace-record.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index 361524b58772..cc6f27bf22e8 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -798,7 +798,8 @@ static void stop_threads(enum trace_type type)
/* Flush out the pipes */
if (type & TRACE_TYPE_STREAM) {
do {
- ret = trace_stream_read(pids, recorder_threads, NULL);
+ struct timeval tv = { 0, 0 };
+ ret = trace_stream_read(pids, recorder_threads, &tv);
} while (ret > 0);
}
}
--
2.35.1
|