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Linux/drivers/staging/android/Kconfig

  1 menu "Android"
  2 
  3 config ANDROID
  4         bool "Android Drivers"
  5         default N
  6         ---help---
  7           Enable support for various drivers needed on the Android platform
  8 
  9 if ANDROID
 10 
 11 config ANDROID_BINDER_IPC
 12         bool "Android Binder IPC Driver"
 13         depends on MMU
 14         default n
 15         ---help---
 16           Binder is used in Android for both communication between processes,
 17           and remote method invocation.
 18 
 19           This means one Android process can call a method/routine in another
 20           Android process, using Binder to identify, invoke and pass arguments
 21           between said processes.
 22 
 23 config ASHMEM
 24         bool "Enable the Anonymous Shared Memory Subsystem"
 25         default n
 26         depends on SHMEM
 27         ---help---
 28           The ashmem subsystem is a new shared memory allocator, similar to
 29           POSIX SHM but with different behavior and sporting a simpler
 30           file-based API.
 31 
 32           It is, in theory, a good memory allocator for low-memory devices,
 33           because it can discard shared memory units when under memory pressure.
 34 
 35 config ANDROID_LOGGER
 36         tristate "Android log driver"
 37         default n
 38         ---help---
 39           This adds support for system-wide logging using four log buffers.
 40 
 41           These are:
 42 
 43               1: main
 44               2: events
 45               3: radio
 46               4: system
 47 
 48           Log reading and writing is performed via normal Linux reads and
 49           optimized writes. This optimization avoids logging having too
 50           much overhead in the system.
 51 
 52 config ANDROID_TIMED_OUTPUT
 53         bool "Timed output class driver"
 54         default y
 55 
 56 config ANDROID_TIMED_GPIO
 57         tristate "Android timed gpio driver"
 58         depends on GPIOLIB && ANDROID_TIMED_OUTPUT
 59         default n
 60 
 61 config ANDROID_LOW_MEMORY_KILLER
 62         bool "Android Low Memory Killer"
 63         default N
 64         ---help---
 65           Registers processes to be killed when memory is low
 66 
 67 config ANDROID_INTF_ALARM_DEV
 68         bool "Android alarm driver"
 69         depends on RTC_CLASS
 70         default n
 71         ---help---
 72           Provides non-wakeup and rtc backed wakeup alarms based on rtc or
 73           elapsed realtime, and a non-wakeup alarm on the monotonic clock.
 74           Also exports the alarm interface to user-space.
 75 
 76 config SYNC
 77         bool "Synchronization framework"
 78         default n
 79         select ANON_INODES
 80         ---help---
 81           This option enables the framework for synchronization between multiple
 82           drivers.  Sync implementations can take advantage of hardware
 83           synchronization built into devices like GPUs.
 84 
 85 config SW_SYNC
 86         bool "Software synchronization objects"
 87         default n
 88         depends on SYNC
 89         ---help---
 90           A sync object driver that uses a 32bit counter to coordinate
 91           syncrhronization.  Useful when there is no hardware primitive backing
 92           the synchronization.
 93 
 94 config SW_SYNC_USER
 95         bool "Userspace API for SW_SYNC"
 96         default n
 97         depends on SW_SYNC
 98         ---help---
 99           Provides a user space API to the sw sync object.
100           *WARNING* improper use of this can result in deadlocking kernel
101           drivers from userspace.
102 
103 source "drivers/staging/android/ion/Kconfig"
104 
105 endif # if ANDROID
106 
107 endmenu

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