Re: [RFC PATCH 00/11] mcount tracing utility

[Andi Kleen]

Steven Rostedt <rostedt@xxxxxxxxxxx> writes:

> The following patch series brings to vanilla Linux a bit of the RT kernel
> trace facility. This incorporates the "-pg" profiling option of gcc
> that will call the "mcount" function for all functions called in
> the kernel.

My personal feeling regarding this code was that it would be much simpler/cleaner
to implement a driver for the "jump tracer"s implemented in various CPUs.
Basically the CPU will write all jumps into a buffer by itself. That
allows you to do many traces (although not latency traces) too.

-Andi
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