This patch moves the non-dynamic dma-buf users over to the dynamic
locking specification. From now on all dma-buf importers are responsible
for holding dma-buf's reservation lock around operations performed over
dma-bufs. This strict locking convention prevents dead lock situation for
dma-buf impor
The new common dma-buf locking convention will require buffer importers
to hold the reservation lock around mapping operations. Make DRM GEM core
to take the lock around the vmapping operations and update QXL and i915
drivers to use the locked functions for the case where DRM core now holds
the loc
Add _unlocked postfix to the dma-buf API function names in a preparation
to move all non-dynamic dma-buf users over to the dynamic locking
specification. This patch only renames API functions, preparing drivers
to the common locking convention. Later on we will make the "unlocked"
functions to take
Hello,
This series moves all drivers to a dynamic dma-buf locking specification.
>From now on all dma-buf importers are made responsible for holding
dma-buf's reservation lock around all operations performed over dma-bufs.
This common locking convention allows us to utilize reservation lock more
b
The internal dma-buf lock isn't needed anymore because the updated
locking specification claims that dma-buf reservation must be locked
by importers, and thus, the internal data is already protected by the
reservation lock. Remove the obsoleted internal lock.
Signed-off-by: Dmitry Osipenko
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d
All drivers that use dma-bufs have been moved to the updated locking
specification and now dma-buf reservation is guaranteed to be locked
by importers during the mapping operations. There is no need to take
the internal dma-buf lock anymore. Remove locking from the videobuf2
memory allocators.
Sig
Intel i915 GPU driver uses wait-wound mutex to lock multiple GEMs on the
attachment to the i915 dma-buf. In order to let all drivers utilize shared
wait-wound context during attachment in a general way, make dma-buf core to
acquire the ww context internally for the attachment operation and update
i
