drm/nouveau/mmu: implement page table cache

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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>

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This commit is contained in:

Ben Skeggs 2017-11-01 03:56:19 +10:00

parent 5e075fdeb1

commit 9a45ddaaa6

3 changed files with 150 additions and 2 deletions

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5

drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h

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132

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c

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15

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h

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