7 Enable support for various drivers needed on the Android platform
11 config ANDROID_BINDER_IPC
12 bool "Android Binder IPC Driver"
15 Binder is used in Android for both communication between processes,
16 and remote method invocation.
18 This means one Android process can call a method/routine in another
19 Android process, using Binder to identify, invoke and pass arguments
20 between said processes.
22 config ANDROID_BINDER_IPC_32BIT
23 bool "Use old 32-bit binder api"
26 The Binder API has been changed to support both 32 and 64bit
27 applications in a mixed environment.
29 Enable this to support an old 32-bit Android user-space (v4.4 and
32 Note that enabling this will break newer Android user-space.
35 bool "Enable the Anonymous Shared Memory Subsystem"
39 The ashmem subsystem is a new shared memory allocator, similar to
40 POSIX SHM but with different behavior and sporting a simpler
43 It is, in theory, a good memory allocator for low-memory devices,
44 because it can discard shared memory units when under memory pressure.
47 tristate "Android log driver"
50 This adds support for system-wide logging using four log buffers.
59 Log reading and writing is performed via normal Linux reads and
60 optimized writes. This optimization avoids logging having too
61 much overhead in the system.
63 config ANDROID_TIMED_OUTPUT
64 bool "Timed output class driver"
67 config ANDROID_TIMED_GPIO
68 tristate "Android timed gpio driver"
69 depends on GPIOLIB && ANDROID_TIMED_OUTPUT
72 config ANDROID_LOW_MEMORY_KILLER
73 bool "Android Low Memory Killer"
76 Registers processes to be killed when memory is low
78 config ANDROID_LOW_MEMORY_KILLER_AUTODETECT_OOM_ADJ_VALUES
79 bool "Android Low Memory Killer: detect oom_adj values"
80 depends on ANDROID_LOW_MEMORY_KILLER
83 Detect oom_adj values written to
84 /sys/module/lowmemorykiller/parameters/adj and convert them
85 to oom_score_adj values.
87 config ANDROID_INTF_ALARM_DEV
88 bool "Android alarm driver"
92 Provides non-wakeup and rtc backed wakeup alarms based on rtc or
93 elapsed realtime, and a non-wakeup alarm on the monotonic clock.
94 Also exports the alarm interface to user-space.
97 bool "Synchronization framework"
101 This option enables the framework for synchronization between multiple
102 drivers. Sync implementations can take advantage of hardware
103 synchronization built into devices like GPUs.
106 bool "Software synchronization objects"
110 A sync object driver that uses a 32bit counter to coordinate
111 syncrhronization. Useful when there is no hardware primitive backing
115 bool "Userspace API for SW_SYNC"
119 Provides a user space API to the sw sync object.
120 *WARNING* improper use of this can result in deadlocking kernel
121 drivers from userspace.
123 source "drivers/staging/android/ion/Kconfig"
125 source "drivers/staging/android/fiq_debugger/Kconfig"