Re: [PATCH v3] drm: Funnel drm logs to tracepoints

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On Fri, 13 Dec 2019 11:47:03 -0500
Sean Paul <sean@xxxxxxxxxx> wrote:

> > Why is there a separate trace event for each of these?
> >   
> 
> To make it easier on userspace to enable just a single drm category.
> 

But trace events can easily be filtered. Say you have a field called
category, you could then just set in the trace event filter:

 echo 'category == 1 || category == 5 || (category > 8 && category < 12)' > /sys/kernel/tracing/drm_print/drm_category_log/filter
 echo 1 > /sys/kernel/tracing/drm_print/drm_category_log/enable

-- Steve
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