drm/vmwgfx: Make user resource lookups reference-free during validation

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Make the process of looking up a user resource and adding it to the
validation list reference-free unless when it's actually added to the
validation list where a single reference is taken.
This saves two locked atomic operations per command stream buffer object
handle lookup, unless there is a lookup cache hit.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

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This commit is contained in:

Thomas Hellstrom 2018-09-26 16:32:40 +02:00

parent 1b9a01d62c

commit e8c66efbfe

3 changed files with 187 additions and 133 deletions

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18

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

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273

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

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35

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

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