[Intel-gfx] [RFC PATCH 00/12] AubCrash

[Oscar Mateo]

On 10/27/2017 11:20 AM, Chris Wilson wrote:
> Quoting Oscar Mateo (2017-10-27 19:01:03)
>> AubCrash is a companion to i915_gpu_error. It gives us the possibility to
>> dump an AUB file that describes the state of the system at the point of
>> the crash (GTTs, contexts, BBs, BOs, etc...). Being an AUB file, it can be
>> used by a number of already existing tools (graphical AUB file browsers,
>> simulators, emulators, etc...) that facilitate debugging (an improvement
>> over the current text-based crash dump).
> Serious question: why both? If the aub is useful for pm debugging, it
> should be either a replacement for sysfs/error or an addendum.
>
> I expect tools to use the new format as well.
> -Chris

That's why I sent this as an RFC, to get suggestions :)

There are things an AUB file cannot replace (fences, seqnos, error 
registers, etc...). It could still be used as an addendum, where the 
things that go into the AUB do not go into sysfs/error anymore (maybe 
with a message to look for the rest in the AUB file?). Or even better: I 
could try to provide the remaining text inside the AUB as comments, so 
that only one file is required...

As for tools, I still need to test how compatible Mesas's Aubinator is 
at the moment. There a number of non-opensource tools as well, but I 
have to discover which ones are publicly available outside of Intel 
before I provide a list here.