commit 8bb4e473bac87e65c9aaa51c9e90e2f98bb25acc
author Alban Crequy <alban@kinvolk.io> Sat Dec 21 16:09:53 2019 +0100
committer yonghong-song <ys114321@gmail.com> Sat Dec 21 10:06:00 2019 -0800
tree 23b1eaf9d6b0dc754f745c7cd91c8ad2da22f583
parent 8174c0ae5541d4c9b2b3a4d407d7ea527946b641

tools/trace.py: flush stdout for each event

tools/trace.py

diff --git a/tools/trace.py b/tools/trace.py
index 9afd672..8b2ca35 100755
--- a/tools/trace.py
+++ b/tools/trace.py
@@ -604,6 +604,7 @@
                 if Probe.max_events is not None and \
                    Probe.event_count >= Probe.max_events:
                         exit()
+                sys.stdout.flush()
 
         def attach(self, bpf, verbose):
                 if len(self.library) == 0:
@@ -843,6 +844,7 @@
                 print("%-7s %-7s %-15s %-16s %s" %
                       ("PID", "TID", "COMM", "FUNC",
                       "-" if not all_probes_trivial else ""))
+                sys.stdout.flush()
 
                 while True:
                         self.bpf.perf_buffer_poll()