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 || COMPILE_TEST
24 depends on ANDROID_TIMED_OUTPUT
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.
31 config ANDROID_LOW_MEMORY_KILLER
32 bool "Android Low Memory Killer"
34 Registers processes to be killed when low memory conditions, this is useful
35 as there is no particular swap space on android.
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
41 config ANDROID_LOW_MEMORY_KILLER_AUTODETECT_OOM_ADJ_VALUES
42 bool "Android Low Memory Killer: detect oom_adj values"
43 depends on ANDROID_LOW_MEMORY_KILLER
46 Detect oom_adj values written to
47 /sys/module/lowmemorykiller/parameters/adj and convert them
48 to oom_score_adj values.
51 bool "Synchronization framework"
54 select DMA_SHARED_BUFFER
56 This option enables the framework for synchronization between multiple
57 drivers. Sync implementations can take advantage of hardware
58 synchronization built into devices like GPUs.
61 bool "Software synchronization objects"
65 A sync object driver that uses a 32bit counter to coordinate
66 synchronization. Useful when there is no hardware primitive backing
70 bool "Userspace API for SW_SYNC"
74 Provides a user space API to the sw sync object.
75 *WARNING* improper use of this can result in deadlocking kernel
76 drivers from userspace.
78 source "drivers/staging/android/ion/Kconfig"