Re: [PATCH v1 02/11] drm: drop uapi dependency from drm_print.h

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Am 18.07.19 um 18:46 schrieb Chris Wilson:
> Quoting Sam Ravnborg (2019-07-18 17:14:58)
>> drm_print.h used DRM_NAME - thus adding a dependency from
>> include/drm/drm_print.h => uapi/drm/drm.h
>>
>> Hardcode the name "drm" to break this dependency.
>> The idea is that there shall be a minimal dependency
>> between include/drm/* and uapi/*
>>
>> Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
>> Suggested-by: Daniel Vetter <daniel@xxxxxxxx>
>> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
>> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
>> Cc: Sean Paul <sean@xxxxxxxxxx>
>> Cc: David Airlie <airlied@xxxxxxxx>
>> Cc: Rob Clark <robdclark@xxxxxxxxx>
>> Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
>> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
>> Cc: Daniel Vetter <daniel@xxxxxxxx>
>> ---
>>   include/drm/drm_print.h | 4 +---
>>   1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
>> index a5d6f2f3e430..760d1bd0eaf1 100644
>> --- a/include/drm/drm_print.h
>> +++ b/include/drm/drm_print.h
>> @@ -32,8 +32,6 @@
>>   #include <linux/device.h>
>>   #include <linux/debugfs.h>
>>   
>> -#include <drm/drm.h>
>> -
>>   /**
>>    * DOC: print
>>    *
>> @@ -287,7 +285,7 @@ void drm_err(const char *format, ...);
>>   /* Macros to make printk easier */
>>   
>>   #define _DRM_PRINTK(once, level, fmt, ...)                             \
>> -       printk##once(KERN_##level "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
>> +       printk##once(KERN_##level "[drm] " fmt, ##__VA_ARGS__)
> I guess I'm th only one who
>
> #undef DRM_NAME
> #define DRM_NAME i915
>
> just so that I didn't have inane logs?
>
> One might suggest that instead of hardcoding it, follow the pr_fmt()
> pattern and only add "[drm]" for the drm core.
>
> Even then it so useless (which drm driver is this message for???) that I
> want to remove them all :(

Yeah, agree. I mean it is nice if the core drm functions use a prefix 
for debug output.

But I actually don't see the point for individual drivers.

Christian.

> -Chris

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