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