GPU lockup dumping

[Jerome Glisse]

On Wed, May 23, 2012 at 5:27 AM, Dave Airlie <airlied at gmail.com> wrote:
> On Thu, May 17, 2012 at 7:28 PM,  <j.glisse at gmail.com> wrote:
>> So here is improved patchset, where i splited ground work necessary
>> for the dumping into their own patch. The debugfs improvement could
>> probably be usefull to intel instead of having i915 have it's own
>> debugfs file stuff.
>>
>> The lockup dumping public api have been move into radeon_drm.h
>>
>> Stressing the fact again that dump are self contained ie they have
>> all the data needed to be replayed (vertex, indices, shader, texture,
>> ...).
>>
>> Would really like to get this into 3.5, the new API is pretty much
>> straightforward and userspace tools can easily be made to convert
>> it to other format. The change to the driver is self contained.
>
> I really don't like introducing this at this stage into 3.5,
>
> I'd really like a good review of the API and what information we provide
> along with how extensible it is.
>
> I'm still not convinced replay is what we want in the field, I know its what
> *you* want, but I think apitrace stuff in userspace pretty much covers
> the replaying situation. So I'd have to look at this and see how easy
> it makes disecting command streams etc.
>
> Dave.

It store pciid and allow to dump all ib per ring, and all associated
bo object. It also have a bunch of flags to help the userspace tools
(like does userspace need to clear offset (vm vs no vm) ...  What more
do you want to know ?

Cheers,
Jerome