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 synchronization. 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