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authorSushmita Susheelendra <ssusheel@codeaurora.org>2017-06-14 01:52:54 +0300
committerRob Clark <robdclark@gmail.com>2017-06-17 15:03:07 +0300
commit0e08270a1f01bceae17d32a0d75aad2388bd1ba2 (patch)
tree31f17b04f1a459ca5ab26772626c8ece4c54158a /drivers/bus
parent816fa34c051492c7f115ad2fd91c9e723d7fc298 (diff)
downloadlinux-0e08270a1f01bceae17d32a0d75aad2388bd1ba2.tar.xz
drm/msm: Separate locking of buffer resources from struct_mutex
Buffer object specific resources like pages, domains, sg list need not be protected with struct_mutex. They can be protected with a buffer object level lock. This simplifies locking and makes it easier to avoid potential recursive locking scenarios for SVM involving mmap_sem and struct_mutex. This also removes unnecessary serialization when creating buffer objects, and also between buffer object creation and GPU command submission. Signed-off-by: Sushmita Susheelendra <ssusheel@codeaurora.org> [robclark: squash in handling new locking for shrinker] Signed-off-by: Rob Clark <robdclark@gmail.com>
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