6 bool "Enable the Anonymous Shared Memory Subsystem"
10 The ashmem subsystem is a new shared memory allocator, similar to
11 POSIX SHM but with different behavior and sporting a simpler
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.
17 config ANDROID_TIMED_OUTPUT
18 bool "Timed output class driver"
21 config ANDROID_TIMED_GPIO
22 tristate "Android timed gpio driver"
23 depends on GPIOLIB && ANDROID_TIMED_OUTPUT
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.
30 config ANDROID_LOW_MEMORY_KILLER
31 bool "Android Low Memory Killer"
33 Registers processes to be killed when low memory conditions, this is useful
34 as there is no particular swap space on android.
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
41 bool "Synchronization framework"
44 select DMA_SHARED_BUFFER
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.
51 bool "Software synchronization objects"
55 A sync object driver that uses a 32bit counter to coordinate
56 syncrhronization. Useful when there is no hardware primitive backing
60 bool "Userspace API for SW_SYNC"
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.
68 source "drivers/staging/android/ion/Kconfig"