diff options
| author |   Ben Skeggs <bskeggs@redhat.com> | 2017-11-01 03:56:19 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-11-02 13:32:24 +1000 |
| commit | 9a45ddaaa674aa103cd74a0df9a3f9c2c8fb3124 (patch) | |
| tree | 7079567c725f676294b36dec2ac60ab5c6f23df6 /drivers/gpu/drm/nouveau/include | |
| parent | drm/nouveau/mmu: automatically handle "un-bootstrapping" of vmm (diff) | |
| download | linux-dev-9a45ddaaa674aa103cd74a0df9a3f9c2c8fb3124.tar.xz linux-dev-9a45ddaaa674aa103cd74a0df9a3f9c2c8fb3124.zip | |
drm/nouveau/mmu: implement page table cache
Builds up and maintains a small cache of each page table size in order
to reduce the frequency of expensive allocations, particularly in the
pathological case where an address range ping-pongs between allocated
and free.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/include')
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h index f26407869e20..61cc4e32e449 100644 --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h @@ -63,6 +63,11 @@ struct nvkm_mmu { u8 lpg_shift; struct nvkm_vmm *vmm; + + struct { + struct mutex mutex; + struct list_head list; + } ptc; }; int nv04_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **); |