Messages in this thread | | | Date | Tue, 30 Sep 2008 08:45:52 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: [PATCH V2 -tip 3/4] Tracing/ftrace: Adapt mmiotrace to the new type of print_line |
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On Tue, 30 Sep 2008, Fr?d?ric Weisbecker wrote: > > Thanks Ingo. > > I'm currently testing tip/master, since tracing/pipe is merged into. > It seems there are some locking issues that I hadn't when I tested the patches. > Perhaps it's because of the merge with the new ring buffer. > > I just launched the sched_switch tracer and it worked well until 4 > seconds of execution. And after that it blocked. > I tested too a marker message adding and it is never displayed. Worse: > I can't break the pipe with Ctrl + C after that. > > When I will have some time, I will try to debug all what I find. >
OK, I'll nuke the ring_buffer_lock :-/
The trace_pipe calls that and then calls print_trace_line which will eventually lock the buffer again. This is a bug on my part. I'll fix that today.
Thanks,
-- Steve
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