Re: [PATCH v2] drm/ttm: Fix GPU MM stats during pool shrinking

[Dave Airlie <airlied@gmail.com>]

On Sat, 2 May 2026 at 18:14, Kenneth Crudup <kenny@panix.com> wrote:
>
>
>
> On 5/1/26 23:53, Matthew Brost wrote:
> > TTM pool shrinking frees pages by calling __free_pages() directly,
> > which bypasses updates to NR_GPU_ACTIVE and leaves GPU MM accounting
> > out of sync.
> >
> > Introduce a helper, __free_pages_gpu_account(), and use it for all page
> > frees in ttm_pool.c so GPU MM statistics are updated consistently.
> >
> > Reported-by: Kenneth Crudup <kenny@panix.com>
> > Fixes: ae80122f3896 ("drm/ttm: use gpu mm stats to track gpu memory allocations. (v4)")
> > Cc: Christian Koenig <christian.koenig@amd.com>
> > Cc: Huang Rui <ray.huang@amd.com>
> > Cc: Matthew Auld <matthew.auld@intel.com>
> > Cc: David Airlie <airlied@gmail.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Signed-off-by: Matthew Brost <matthew.brost@intel.com>
> >
> > ---
> >
> > v2:

Oops, good catch,

Reviewed-by: Dave Airlie <airlied@redhat.com>

Dave.