[Sound-open-firmware] [PATCH 0/2] DMA trace level

[Liam Girdwood]

On Thu, 2018-04-12 at 22:48 +0800, Yan Wang wrote:
> 
> On 4/12/2018 10:14 PM, Liam Girdwood wrote:
> > On Thu, 2018-04-12 at 15:46 +0800, yan.wang at linux.intel.com wrote:
> > > From: Yan Wang <yan.wang at linux.intel.com>
> > > 
> > > Implement DMA trace level based on modules.
> > > User can switch on/off for DMA trace of one module.
> > > 
> > 
> > Are there any updates to userspace rmbox tools to use this feature ?
> 
> No currently.
> IMHO, we could use "echo/cat /sys/kernel/debug/sof/trace_level" to 
> control it.
> So need I also add another control path to control it by rmbox?
> Thanks.
> 

yeah, we could have a debugFS file "trace_control" and we would send :-

echo "VOL1.1:pipeline:2"

format is component:class:level

This would set trace to level 2 on component "VOL1.1" for pipeline operations

cat trace_control

would list each widget and the trace level for that widget.

Liam

> Yan Wang
> 
> > 
> > Liam
> > 
> 
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