On Thu, Aug 15, 2024 at 11:27 AM Antonino Maniscalco <antomani103@xxxxxxxxx> wrote: > > This series implements preemption for A7XX targets, which allows the GPU to > switch to an higher priority ring when work is pushed to it, reducing latency > for high priority submissions. > > This series enables L1 preemption with skip_save_restore which requires > the following userspace patches to function: > > https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30544 > > A flag is added to `msm_gem_submit` to only allow submissions from compatible > userspace to be preempted, therefore maintaining compatibility. I guess this last para is from an earlier iteration of this series? Looks like instead you are making this a submitqueue flag (which is an approach that I prefer) BR, -R > Some commits from this series are based on a previous series to enable > preemption on A6XX targets: > > https://lkml.kernel.org/1520489185-21828-1-git-send-email-smasetty@xxxxxxxxxxxxxx > > Signed-off-by: Antonino Maniscalco <antomani103@xxxxxxxxx> > --- > Antonino Maniscalco (7): > drm/msm: Fix bv_fence being used as bv_rptr > drm/msm: Add submitqueue setup and close > drm/msm: Add a `preempt_record_size` field > drm/msm/A6xx: Implement preemption for A7XX targets > drm/msm/A6xx: Add traces for preemption > drm/msm/A6XX: Add a flag to allow preemption to submitqueue_create > drm/msm/A6xx: Enable preemption for A7xx targets > > drivers/gpu/drm/msm/Makefile | 1 + > drivers/gpu/drm/msm/adreno/a6xx_catalog.c | 3 + > drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 339 ++++++++++++++++++++++- > drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 168 ++++++++++++ > drivers/gpu/drm/msm/adreno/a6xx_preempt.c | 441 ++++++++++++++++++++++++++++++ > drivers/gpu/drm/msm/adreno/adreno_gpu.h | 1 + > drivers/gpu/drm/msm/msm_gpu.h | 7 + > drivers/gpu/drm/msm/msm_gpu_trace.h | 28 ++ > drivers/gpu/drm/msm/msm_ringbuffer.h | 8 + > drivers/gpu/drm/msm/msm_submitqueue.c | 10 + > include/uapi/drm/msm_drm.h | 5 +- > 11 files changed, 995 insertions(+), 16 deletions(-) > --- > base-commit: 7c626ce4bae1ac14f60076d00eafe71af30450ba > change-id: 20240815-preemption-a750-t-fcee9a844b39 > > Best regards, > -- > Antonino Maniscalco <antomani103@xxxxxxxxx> >
