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

[Yan Wang]

On 4/12/2018 11:07 PM, Liam Girdwood wrote:
> 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

Some trace class may not bind with component. E.g. trace_ipc().
May we ignore component key in this case?
Thanks.

Yan Wang

> 
> 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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