![Jagan Teki](/assets/img/avatar_default.png)
This patch adds more help description on android Kconfig for - lowmemory killer - Timed gpio (same for timed output) Signed-off-by: Jagan Teki <jteki@openedev.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Brian Swetland <swetland@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
menu "Android"
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if ANDROID
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config ASHMEM
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bool "Enable the Anonymous Shared Memory Subsystem"
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default n
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depends on SHMEM
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---help---
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The ashmem subsystem is a new shared memory allocator, similar to
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POSIX SHM but with different behavior and sporting a simpler
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file-based API.
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It is, in theory, a good memory allocator for low-memory devices,
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because it can discard shared memory units when under memory pressure.
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config ANDROID_TIMED_OUTPUT
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bool "Timed output class driver"
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default y
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config ANDROID_TIMED_GPIO
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tristate "Android timed gpio driver"
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depends on GPIOLIB && ANDROID_TIMED_OUTPUT
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default n
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---help---
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Unlike generic gpio is to allow programs to access and manipulate gpio
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registers from user space, timed output/gpio is a system to allow changing
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a gpio pin and restore it automatically after a specified timeout.
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config ANDROID_LOW_MEMORY_KILLER
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bool "Android Low Memory Killer"
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---help---
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Registers processes to be killed when low memory conditions, this is useful
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as there is no particular swap space on android.
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The registered process will kills according to the priorities in android init
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scripts (/init.rc), and it defines priority values with minimum free memory size
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for each priority.
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config SYNC
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bool "Synchronization framework"
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default n
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select ANON_INODES
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select DMA_SHARED_BUFFER
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---help---
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This option enables the framework for synchronization between multiple
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drivers. Sync implementations can take advantage of hardware
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synchronization built into devices like GPUs.
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config SW_SYNC
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bool "Software synchronization objects"
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default n
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depends on SYNC
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---help---
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A sync object driver that uses a 32bit counter to coordinate
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syncrhronization. Useful when there is no hardware primitive backing
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the synchronization.
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config SW_SYNC_USER
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bool "Userspace API for SW_SYNC"
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default n
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depends on SW_SYNC
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---help---
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Provides a user space API to the sw sync object.
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*WARNING* improper use of this can result in deadlocking kernel
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drivers from userspace.
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source "drivers/staging/android/ion/Kconfig"
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endif # if ANDROID
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endmenu
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