Messages in this thread | | | Date | Thu, 17 Feb 2022 14:46:00 +0200 | Subject | Re: [PATCH 3/3] drm: omapdrm: Do no allocate non-scanout GEMs through DMM/TILER | From | Tomi Valkeinen <> |
| |
Hi,
On 19/01/2022 12:23, Ivaylo Dimitrov wrote: > On devices with DMM, all allocations are done through either DMM or TILER. > DMM/TILER being a limited resource means that such allocations will start > to fail before actual free memory is exhausted. What is even worse is that > with time DMM/TILER space gets fragmented to the point that even if we have > enough free DMM/TILER space and free memory, allocation fails because there > is no big enough free block in DMM/TILER space. > > Such failures can be easily observed with OMAP xorg DDX, for example - > starting few GUI applications (so buffers for their windows are allocated) > and then rotating landscape<->portrait while closing and opening new > windows soon results in allocation failures. > > Fix that by mapping buffers through DMM/TILER only when really needed, > like, for scanout buffers.
Doesn't this break users that get a buffer from omapdrm and expect it to be contiguous?
Tomi
| |