RE: [patch 4/5] x86, ftrace, hw-branch-tracer: reset trace on close

From: Metzger, Markus T
Date: Fri Jan 16 2009 - 11:19:48 EST

>-----Original Message-----
>From: Steven Rostedt [mailto:srostedt@xxxxxxxxxx]
>Sent: Friday, January 16, 2009 4:02 PM
>To: Metzger, Markus T

>On Fri, 2009-01-16 at 12:01 +0100, Markus Metzger wrote:
>> Reset the ftrace buffer on close. Since we use cyclic buffers to store
>> the trace, the trace is not contiguous, anyway. This behaviour should
>> be more natural.
>So you want multiple reads of /debug/tracing/trace to return different
>output? Kind of like the trace_pipe? But trace_pipe is a real consumer.

The trace chunks are not contiguous (in this version), so it does not make sense to append them.
I don't expect trace_pipe to work with the hw-branch-tracer.

>BTW, can you run your diff with the -p option. This will help in knowing
>which function the change is in. There's some hunks where it is
>ambiguous. If you use quilt, you can add:
>to you .quiltrc file.


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