LXR linux/drivers/staging/android/Kconfig

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