linux-stable.git/drivers/staging/android/Kconfig, branch v5.0

staging: android: Kconfig; Remove excessive hyphens

2018-05-08T11:24:15+00:00

Fixes the following checkpatch.pl warning:
"prefer 'help' over '---help---' for new help texts"

Signed-off-by: Nathan Chancellor 
Signed-off-by: Greg Kroah-Hartman

staging: Android: Add 'vsoc' driver for cuttlefish.

2018-04-23T12:51:37+00:00

The cuttlefish system is a virtual SoC architecture based on QEMU. It
uses the QEMU ivshmem feature to share memory regions between guest and
host with a custom protocol.

Cc: Greg Kroah-Hartman 
Cc: Arve Hjønnevåg 
Cc: Todd Kjos 
Cc: Martijn Coenen 
Cc: Dan Carpenter 
Cc: devel@driverdev.osuosl.org
Cc: kernel-team@android.com
Signed-off-by: Greg Hartman 
[astrachan: rebased against 4.16, added TODO, fixed checkpatch issues]
Signed-off-by: Alistair Strachan 
Signed-off-by: Greg Kroah-Hartman

staging, android: remove lowmemory killer from the tree

2017-03-09T12:47:03+00:00

Lowmemory killer is sitting in the staging tree since 2008 without any
serious interest for fixing issues brought up by the MM folks. The main
objection is that the implementation is basically broken by design:
	- it hooks into slab shrinker API which is not suitable for this
	  purpose. lowmem_count implementation just shows this nicely.
	  There is no scaling based on the memory pressure and no
	  feedback to the generic shrinker infrastructure.
	  Moreover lowmem_scan is called way too often for the heavy
	  work it performs.
	- it is not reclaim context aware - no NUMA and/or memcg
	  awareness.

As the code stands right now it just adds a maintenance overhead when
core MM changes have to update lowmemorykiller.c as well. It also seems
that the alternative LMK implementation will be solely in the userspace
so this code has no perspective it seems. The staging tree is supposed
to be for a code which needs to be put in shape before it can be merged
which is not the case here obviously.

Signed-off-by: Michal Hocko 
Signed-off-by: Greg Kroah-Hartman

dma-buf/sw_sync: de-stage SW_SYNC

2016-08-15T14:41:46+00:00

SW_SYNC allows to run tests on the sync_file framework via debugfs on

/sync/sw_sync

Opening and closing the file triggers creation and release of a sync
timeline. To create fences on this timeline the SW_SYNC_IOC_CREATE_FENCE
ioctl should be used. To increment the timeline value use SW_SYNC_IOC_INC.

Also it exports Sync information on

/sync/info

Signed-off-by: Gustavo Padovan 
Reviewed-by: Eric Engestrom 
Signed-off-by: Greg Kroah-Hartman

staging/android: add DEBUG_FS dependence on Kconfig

2016-06-18T04:17:40+00:00

SW_SYNC only works with DEBUG_FS so state it in the Kconfig file.

Signed-off-by: Gustavo Padovan 
Reviewed-by: Daniel Vetter 
Reviewed-by: Sumit Semwal 
Signed-off-by: Greg Kroah-Hartman

staging/android: make sync_timeline internal to sw_sync

2016-06-18T04:17:40+00:00

The only use sync_timeline will have in upstream kernel is for debugging
through the SW_SYNC interface. So make it internal to SW_SYNC to avoid
people use it in the future.

Signed-off-by: Gustavo Padovan 
Reviewed-by: Daniel Vetter 
Reviewed-by: Sumit Semwal 
Signed-off-by: Greg Kroah-Hartman

dma-buf/sync_file: de-stage sync_file

2016-04-30T00:37:10+00:00

sync_file is useful to connect one or more fences to the file. The file is
used by userspace to track fences between drivers that share DMA bufs.

Signed-off-by: Gustavo Padovan 
Reviewed-by: Daniel Vetter 
Signed-off-by: Greg Kroah-Hartman

staging: android: Fix grammar error in Kconfig file

2016-04-30T00:03:07+00:00

Remove the "s" from kills so that the help message is easier to understand

Signed-off-by: Leo Sperling 
Signed-off-by: Greg Kroah-Hartman

android: remove timed output/gpio driver

2016-03-31T01:31:37+00:00

timed_output was only used by the Android vibrator HAL which has now
learned how to use LED triggers instead[1]. Any users of it in AOSP are
on ancient kernels. Adding support for LED triggers is purely DT changes
and proper kernel config.

[1] https://android.googlesource.com/platform%2Fhardware%2Flibhardware/+/61701df363310a5cbd95e3e1638baa9526e42c9b

Cc: John Stultz 
Cc: "Arve Hjønnevåg" 
Cc: Riley Andrews 
Signed-off-by: Rob Herring 
Acked-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

staging/android: move SW_SYNC_USER to a debugfs file

2016-02-08T01:34:58+00:00

This remove CONFIG_SW_SYNC_USER and instead compile the sw_sync file into
debugpfs under /sync/sw_sync.

Signed-off-by: Gustavo Padovan 
Reviewed-by: Maarten Lankhorst 
Signed-off-by: Greg Kroah-Hartman