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Linux/drivers/staging/android/Kconfig

  1 menu "Android"
  2 
  3 if ANDROID
  4 
  5 config ASHMEM
  6         bool "Enable the Anonymous Shared Memory Subsystem"
  7         default n
  8         depends on SHMEM
  9         ---help---
 10           The ashmem subsystem is a new shared memory allocator, similar to
 11           POSIX SHM but with different behavior and sporting a simpler
 12           file-based API.
 13 
 14           It is, in theory, a good memory allocator for low-memory devices,
 15           because it can discard shared memory units when under memory pressure.
 16 
 17 config ANDROID_TIMED_OUTPUT
 18         bool "Timed output class driver"
 19         default y
 20 
 21 config ANDROID_TIMED_GPIO
 22         tristate "Android timed gpio driver"
 23         depends on GPIOLIB || COMPILE_TEST
 24         depends on ANDROID_TIMED_OUTPUT
 25         default n
 26         ---help---
 27           Unlike generic gpio is to allow programs to access and manipulate gpio
 28           registers from user space, timed output/gpio is a system to allow changing
 29           a gpio pin and restore it automatically after a specified timeout.
 30 
 31 config ANDROID_LOW_MEMORY_KILLER
 32         bool "Android Low Memory Killer"
 33         ---help---
 34           Registers processes to be killed when low memory conditions, this is useful
 35           as there is no particular swap space on android.
 36 
 37           The registered process will kills according to the priorities in android init
 38           scripts (/init.rc), and it defines priority values with minimum free memory size
 39           for each priority.
 40 
 41 config SYNC
 42         bool "Synchronization framework"
 43         default n
 44         select ANON_INODES
 45         select DMA_SHARED_BUFFER
 46         ---help---
 47           This option enables the framework for synchronization between multiple
 48           drivers.  Sync implementations can take advantage of hardware
 49           synchronization built into devices like GPUs.
 50 
 51 config SW_SYNC
 52         bool "Software synchronization objects"
 53         default n
 54         depends on SYNC
 55         ---help---
 56           A sync object driver that uses a 32bit counter to coordinate
 57           synchronization.  Useful when there is no hardware primitive backing
 58           the synchronization.
 59 
 60 config SW_SYNC_USER
 61         bool "Userspace API for SW_SYNC"
 62         default n
 63         depends on SW_SYNC
 64         ---help---
 65           Provides a user space API to the sw sync object.
 66           *WARNING* improper use of this can result in deadlocking kernel
 67           drivers from userspace.
 68 
 69 source "drivers/staging/android/ion/Kconfig"
 70 
 71 endif # if ANDROID
 72 
 73 endmenu

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