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           syncrhronization.  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