[alsa-devel] [PATCH v2 07/12] ASoC: SOF: Add DSP firmware trace event support

[Liam Girdwood]

On Tue, 2018-09-04 at 16:03 +0100, Mark Brown wrote:
> On Tue, Sep 04, 2018 at 02:21:20PM +0100, Liam Girdwood wrote:
> > On Mon, 2018-09-03 at 17:25 +0100, Mark Brown wrote:
> > > Should this be integrated into the Linux trace event mechanism rather
> > > than open coded?  It would at least be nice to not call this a trace
> > > event buffer - when I initially read this I was expecting it to be for
> > > the standard Linux stuff which obviously it isn't.
> > Your right, I'll rename. The eventual aim is to make it more like Linux
> > trace
> > but we are constrained somewhat as some DSPs only 96kB or instruction RAM,
> > hence
> > it's a simple and raw trace infrastructure.
> 
> I was thinking the code could read it like it's doing now and then just
> have a trace event to dump it into the core trace infrastructure as it
> reads things in.

Most of the data is binary atm, so we were decoding in userspace. Any objection
to decoding in the kernel as different trace events ?

Thanks

Liam