| menu "Android" |
| |
| if ANDROID |
| |
| config ASHMEM |
| bool "Enable the Anonymous Shared Memory Subsystem" |
| default n |
| depends on SHMEM |
| ---help--- |
| The ashmem subsystem is a new shared memory allocator, similar to |
| POSIX SHM but with different behavior and sporting a simpler |
| file-based API. |
| |
| It is, in theory, a good memory allocator for low-memory devices, |
| because it can discard shared memory units when under memory pressure. |
| |
| config ANDROID_LOGGER |
| tristate "Android log driver" |
| default n |
| ---help--- |
| This adds support for system-wide logging using four log buffers. |
| |
| These are: |
| |
| 1: main |
| 2: events |
| 3: radio |
| 4: system |
| |
| Log reading and writing is performed via normal Linux reads and |
| optimized writes. This optimization avoids logging having too |
| much overhead in the system. |
| |
| config ANDROID_TIMED_OUTPUT |
| bool "Timed output class driver" |
| default y |
| |
| config ANDROID_TIMED_GPIO |
| tristate "Android timed gpio driver" |
| depends on GPIOLIB && ANDROID_TIMED_OUTPUT |
| default n |
| |
| config ANDROID_LOW_MEMORY_KILLER |
| bool "Android Low Memory Killer" |
| ---help--- |
| Registers processes to be killed when memory is low |
| |
| config ANDROID_INTF_ALARM_DEV |
| tristate "Android alarm driver" |
| depends on RTC_CLASS |
| default n |
| ---help--- |
| Provides non-wakeup and rtc backed wakeup alarms based on rtc or |
| elapsed realtime, and a non-wakeup alarm on the monotonic clock. |
| Also exports the alarm interface to user-space. |
| |
| config SYNC |
| bool "Synchronization framework" |
| default n |
| select ANON_INODES |
| select DMA_SHARED_BUFFER |
| ---help--- |
| This option enables the framework for synchronization between multiple |
| drivers. Sync implementations can take advantage of hardware |
| synchronization built into devices like GPUs. |
| |
| config SW_SYNC |
| bool "Software synchronization objects" |
| default n |
| depends on SYNC |
| ---help--- |
| A sync object driver that uses a 32bit counter to coordinate |
| syncrhronization. Useful when there is no hardware primitive backing |
| the synchronization. |
| |
| config SW_SYNC_USER |
| bool "Userspace API for SW_SYNC" |
| default n |
| depends on SW_SYNC |
| ---help--- |
| Provides a user space API to the sw sync object. |
| *WARNING* improper use of this can result in deadlocking kernel |
| drivers from userspace. |
| |
| source "drivers/staging/android/ion/Kconfig" |
| |
| endif # if ANDROID |
| |
| endmenu |
