diff options
| author | Laura Abbott <labbott@redhat.com> | 2017-04-18 11:27:14 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-18 20:43:14 +0200 |
| commit | e44adf05b85e5a9d1d224f5ecde1c1c5e5371e36 (patch) | |
| tree | 20c4668297cd03b8238c6ffbcf6aeb5d4ceb3ee9 /drivers/staging/android | |
| parent | 804ca94a98237e12ad8fabf7cdc566f14b05b7df (diff) | |
staging/android: Update Ion TODO list
Most of the items have been taken care of by a clean up series. Remove
the completed items and add a few new ones.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android')
| -rw-r--r-- | drivers/staging/android/TODO | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/staging/android/TODO b/drivers/staging/android/TODO index 8f3ac37bfe12..5f14247392bf 100644 --- a/drivers/staging/android/TODO +++ b/drivers/staging/android/TODO @@ -7,23 +7,10 @@ TODO: 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. + - Add dt-bindings for remaining heaps (chunk and carveout heaps). This would + involve putting appropriate bindings in a memory node for Ion to find. + - Split /dev/ion up into multiple nodes (e.g. /dev/ion/heap0) + - Better test framework (integration with VGEM was suggested) Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc: Arve Hjønnevåg <arve@android.com> and Riley Andrews <riandrews@android.com> |