[PATCH 1/3] drm/xe: Introduce a simple busted state

[Tvrtko Ursulin]

On 15/03/2024 03:09, Rodrigo Vivi wrote:
> On Thu, Mar 14, 2024 at 06:23:04PM -0700, Dixit, Ashutosh wrote:
>> On Thu, 14 Mar 2024 18:03:15 -0700, Rodrigo Vivi wrote:
>>>
>>> Introduce a very simple 'busted' state where any attempt
>>> to access the GPU is entirely blocked.
>>
>> Busted?
>>
>> busted. / (ˈbʌstəd) / adjective. informal caught out doing something wrong
>> and therefore in trouble: you are so busted.
> 
> that's why ;)
> 
> also:
> https://www.dictionary.com/browse/busted
> "broken, fractured, or seriously damaged"
> 
>>
>> Why not wedged
> 
> https://www.merriam-webster.com/dictionary/wedged : "shaped like a wedge" ? :)
> 
> or perhaps this: https://dictionary.cambridge.org/us/dictionary/english/wedged
> 
> "to make something stay in a particular position by using a wedge"
> 
> "to put something into a very small or narrow space, so that it cannot move easily"
> 
> that's the i915 terminology and meaning that I'm trying to avoid here...
> 
> i.e. wedged can be a temporary state like in i915 where we 'wedge' and 'unwedge'
> the gpu in so many cases. That flow doesn't fit well with xe scheduler and it is
> a complication that is not desired.
> 
> So I want a stronger word that makes it really clear that something went wrong
> and won't easily transition back.
> 
>>   or lost
> 
> but not that strong...
> 
> it is not entirely lost... we can still open the client, otherwise we would lose
> display and also get the guc logs.
> 
> If we really want to go lost and avoid the client connection then we could
> simply deregister the drm card device for instance...
> 
>> or down
> 
> looks like 'off' without power...
> 
>> or dead?
> 
> too strong... like lost.

Busted feels maybe not fully professional in the logs? So if wedged 
really cannot be re-used for reduced congitive load then Merriam Webster 
lists 'jammed' as a synonym which has a pretty neat definitions.

a
: to become blocked, wedged, or stuck fast
The line jammed and the boat hung useless.

b
: to become unworkable when a movable part becomes blocked or stuck
the gun jammed

Or 'off-lined' and maybe truly unregister the client as you say above. 
There is some benefit to avoiding funny words in kernel logs I think.

Regards,

Tvrtko

> 
>>
>> :-)
>>
>> Ashutosh