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- TODO:
- - checkpatch.pl cleanups
- - sparse fixes
- - rename files to be not so "generic"
- - add proper arch dependencies as needed
- - audit userspace interfaces to make sure they are sane
- ion/
- - Remove ION_IOC_SYNC: Flushing for devices should be purely a kernel internal
- interface on top of dma-buf. flush_for_device needs to be added to dma-buf
- first.
- - Remove ION_IOC_CUSTOM: Atm used for cache flushing for cpu access in some
- vendor trees. Should be replaced with an ioctl on the dma-buf to expose the
- begin/end_cpu_access hooks to userspace.
- - Clarify the tricks ion plays with explicitly managing coherency behind the
- dma api's back (this is absolutely needed for high-perf gpu drivers): Add an
- explicit coherency management mode to flush_for_device to be used by drivers
- which want to manage caches themselves and which indicates whether cpu caches
- need flushing.
- - With those removed there's probably no use for ION_IOC_IMPORT anymore either
- since ion would just be the central allocator for shared buffers.
- - Add dt-binding to expose cma regions as ion heaps, with the rule that any
- such cma regions must already be used by some device for dma. I.e. ion only
- exposes existing cma regions and doesn't reserve unecessarily memory when
- booting a system which doesn't use ion.
- Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc:
- Arve Hjønnevåg <arve@android.com> and Riley Andrews <riandrews@android.com>
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