Re: [PATCH v3 0/4] mm: add more kernel parameters to control mTHP

[Andrew Morton]

On Thu, 31 Oct 2024 08:04:58 -0300 Maíra Canal <mcanal@xxxxxxxxxx> wrote:

> > There isn't a lot of info here - please explain this timing issue in
> > more detail.
> > 
> > Because the question which leaps to mind is: shouldn't the
> > "applications that use shmem" be changed to "configure mTHP through
> > sysfs" *before* "using shmem"?  Seems pretty basic.
> 
> Sorry about that, I'll try to improve the commit messages and add more 
> details.
> 
> As mentioned in the example I gave ("DRM GEM objects"), my main use is
> GEM objects backed by shmem. I'd like to use Huge Pages on the GPU and I
> can only do that if I have contiguous memory to back my objects.
> 
> I can't think how I can change sysfs from a DRM driver.

So your term "applications" actually refers to in-kernel drivers?