Re: [PATCH v2 1/4] drm/amd/display: Rework registers tracepoint

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On 09/11, Kazlauskas, Nicholas wrote:
> On 2020-09-11 10:59 a.m., Rodrigo Siqueira wrote:
> > amdgpu_dc_rreg and amdgpu_dc_wreg are very similar, for this reason,
> > this commits abstract these two events by using DECLARE_EVENT_CLASS and
> > create an instance of it for each one of these events.
> > 
> > Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
> 
> This looks reasonable to me. Does this still show up as
> amdpgu_dc_rrreg/amdgpu_dc_wreg in the captured trace log?
> 
> As long as we can still tell this apart you can consider this patch:
> 
> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>

Yes, this change does not change anything from the user perspective.

Thanks
 
> Regards,
> Nicholas Kazlauskas
> 
> > ---
> >   .../amd/display/amdgpu_dm/amdgpu_dm_trace.h   | 55 ++++++++-----------
> >   1 file changed, 24 insertions(+), 31 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h
> > index d898981684d5..dd34e11b1079 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h
> > @@ -31,40 +31,33 @@
> >   #include <linux/tracepoint.h>
> > -TRACE_EVENT(amdgpu_dc_rreg,
> > -	TP_PROTO(unsigned long *read_count, uint32_t reg, uint32_t value),
> > -	TP_ARGS(read_count, reg, value),
> > -	TP_STRUCT__entry(
> > -			__field(uint32_t, reg)
> > -			__field(uint32_t, value)
> > -		),
> > -	TP_fast_assign(
> > -			__entry->reg = reg;
> > -			__entry->value = value;
> > -			*read_count = *read_count + 1;
> > -		),
> > -	TP_printk("reg=0x%08lx, value=0x%08lx",
> > -			(unsigned long)__entry->reg,
> > -			(unsigned long)__entry->value)
> > -);
> > +DECLARE_EVENT_CLASS(amdgpu_dc_reg_template,
> > +		    TP_PROTO(unsigned long *count, uint32_t reg, uint32_t value),
> > +		    TP_ARGS(count, reg, value),
> > -TRACE_EVENT(amdgpu_dc_wreg,
> > -	TP_PROTO(unsigned long *write_count, uint32_t reg, uint32_t value),
> > -	TP_ARGS(write_count, reg, value),
> > -	TP_STRUCT__entry(
> > -			__field(uint32_t, reg)
> > -			__field(uint32_t, value)
> > -		),
> > -	TP_fast_assign(
> > -			__entry->reg = reg;
> > -			__entry->value = value;
> > -			*write_count = *write_count + 1;
> > -		),
> > -	TP_printk("reg=0x%08lx, value=0x%08lx",
> > -			(unsigned long)__entry->reg,
> > -			(unsigned long)__entry->value)
> > +		    TP_STRUCT__entry(
> > +				     __field(uint32_t, reg)
> > +				     __field(uint32_t, value)
> > +		    ),
> > +
> > +		    TP_fast_assign(
> > +				   __entry->reg = reg;
> > +				   __entry->value = value;
> > +				   *count = *count + 1;
> > +		    ),
> > +
> > +		    TP_printk("reg=0x%08lx, value=0x%08lx",
> > +			      (unsigned long)__entry->reg,
> > +			      (unsigned long)__entry->value)
> >   );
> > +DEFINE_EVENT(amdgpu_dc_reg_template, amdgpu_dc_rreg,
> > +	     TP_PROTO(unsigned long *count, uint32_t reg, uint32_t value),
> > +	     TP_ARGS(count, reg, value));
> > +
> > +DEFINE_EVENT(amdgpu_dc_reg_template, amdgpu_dc_wreg,
> > +	     TP_PROTO(unsigned long *count, uint32_t reg, uint32_t value),
> > +	     TP_ARGS(count, reg, value));
> >   TRACE_EVENT(amdgpu_dc_performance,
> >   	TP_PROTO(unsigned long read_count, unsigned long write_count,
> > 
> 

-- 
Rodrigo Siqueira
https://siqueira.tech

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