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menu "Android"
if ANDROID
config ASHMEM
bool "Enable the Anonymous Shared Memory Subsystem"
default n
depends on SHMEM
---help---
The ashmem subsystem is a new shared memory allocator, similar to
POSIX SHM but with different behavior and sporting a simpler
file-based API.
It is, in theory, a good memory allocator for low-memory devices,
because it can discard shared memory units when under memory pressure.
config ANDROID_TIMED_OUTPUT
bool "Timed output class driver"
default y
config ANDROID_TIMED_GPIO
tristate "Android timed gpio driver"
depends on GPIOLIB || COMPILE_TEST
depends on ANDROID_TIMED_OUTPUT
default n
---help---
Unlike generic gpio is to allow programs to access and manipulate gpio
registers from user space, timed output/gpio is a system to allow changing
a gpio pin and restore it automatically after a specified timeout.
config ANDROID_LOW_MEMORY_KILLER
bool "Android Low Memory Killer"
---help---
Registers processes to be killed when low memory conditions, this is useful
as there is no particular swap space on android.
The registered process will kills according to the priorities in android init
scripts (/init.rc), and it defines priority values with minimum free memory size
for each priority.
config SYNC
bool "Synchronization framework"
default n
select ANON_INODES
select DMA_SHARED_BUFFER
---help---
This option enables the framework for synchronization between multiple
drivers. Sync implementations can take advantage of hardware
synchronization built into devices like GPUs.
config SW_SYNC
bool "Software synchronization objects"
default n
depends on SYNC
---help---
A sync object driver that uses a 32bit counter to coordinate
syncrhronization. Useful when there is no hardware primitive backing
the synchronization.
config SW_SYNC_USER
bool "Userspace API for SW_SYNC"
default n
depends on SW_SYNC
---help---
Provides a user space API to the sw sync object.
*WARNING* improper use of this can result in deadlocking kernel
drivers from userspace.
source "drivers/staging/android/ion/Kconfig"
endif # if ANDROID
endmenu
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