[PATCH v2 1/2] drm: Add GPU reset sysfs event

[Christian König]

Am 09.03.22 um 19:12 schrieb Rob Clark:
> On Tue, Mar 8, 2022 at 11:40 PM Shashank Sharma
> <contactshashanksharma at gmail.com> wrote:
>> From: Shashank Sharma <shashank.sharma at amd.com>
>>
>> This patch adds a new sysfs event, which will indicate
>> the userland about a GPU reset, and can also provide
>> some information like:
>> - process ID of the process involved with the GPU reset
>> - process name of the involved process
>> - the GPU status info (using flags)
>>
>> This patch also introduces the first flag of the flags
>> bitmap, which can be appended as and when required.
> Why invent something new, rather than using the already existing devcoredump?

Yeah, that's a really valid question.

> I don't think we need (or should encourage/allow) something drm
> specific when there is already an existing solution used by both drm
> and non-drm drivers.  Userspace should not have to learn to support
> yet another mechanism to do the same thing.

Question is how is userspace notified about new available core dumps?

Regards,
Christian.

>
> BR,
> -R