This only affects the tsc -> time of day correlation when doing
`trace-cmd record --date`.
get_date_to_ts() writes a dummy event to trace_marker and then reads it back.
Reading it back is done by looping over all per-cpu raw trace pipes and trying
to read. This read should be non-blocking, because the dummy event can end up
on any CPU.
Signed-off-by: Aaron Fabbri <ajfabbri@xxxxxxxxx>
---
trace-record.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/trace-record.c b/trace-record.c
index 1b1d293..dca8a92 100644
--- a/trace-record.c
+++ b/trace-record.c
@@ -2092,7 +2092,7 @@ static unsigned long long find_time_stamp(struct
pevent *pevent)
continue;
sprintf(file, "%s/%s/trace_pipe_raw", path, name);
- fd = open(file, O_RDONLY);
+ fd = open(file, O_RDONLY | O_NONBLOCK);
if (fd < 0)
continue;
do {
--
1.8.1.2
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