1125ab9570
Simple LMK uses VM pressure now, not a kswapd hook like before. Update the Kconfig description to reflect such. Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
93 lines
2.9 KiB
Plaintext
93 lines
2.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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menu "Android"
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config ANDROID
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bool "Android Drivers"
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---help---
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Enable support for various drivers needed on the Android platform
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if ANDROID
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config ANDROID_BINDER_IPC
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bool "Android Binder IPC Driver"
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depends on MMU && !M68K
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default n
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---help---
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Binder is used in Android for both communication between processes,
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and remote method invocation.
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This means one Android process can call a method/routine in another
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Android process, using Binder to identify, invoke and pass arguments
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between said processes.
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config ANDROID_BINDERFS
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bool "Android Binderfs filesystem"
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depends on ANDROID_BINDER_IPC
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default n
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---help---
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Binderfs is a pseudo-filesystem for the Android Binder IPC driver
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which can be mounted per-ipc namespace allowing to run multiple
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instances of Android.
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Each binderfs mount initially only contains a binder-control device.
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It can be used to dynamically allocate new binder IPC devices via
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ioctls.
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config ANDROID_BINDER_DEVICES
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string "Android Binder devices"
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depends on ANDROID_BINDER_IPC
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default "binder,hwbinder,vndbinder"
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---help---
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Default value for the binder.devices parameter.
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The binder.devices parameter is a comma-separated list of strings
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that specifies the names of the binder device nodes that will be
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created. Each binder device has its own context manager, and is
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therefore logically separated from the other devices.
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config ANDROID_BINDER_IPC_SELFTEST
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bool "Android Binder IPC Driver Selftest"
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depends on ANDROID_BINDER_IPC
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---help---
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This feature allows binder selftest to run.
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Binder selftest checks the allocation and free of binder buffers
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exhaustively with combinations of various buffer sizes and
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alignments.
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config ANDROID_SIMPLE_LMK
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bool "Simple Android Low Memory Killer"
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depends on !ANDROID_LOW_MEMORY_KILLER && !MEMCG && !PSI
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---help---
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This is a complete low memory killer solution for Android that is
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small and simple. Processes are killed according to the priorities
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that Android gives them, so that the least important processes are
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always killed first. Processes are killed until memory deficits are
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satisfied, as observed from direct reclaim and kswapd reclaim
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struggling to free up pages, via VM pressure notifications.
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if ANDROID_SIMPLE_LMK
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config ANDROID_SIMPLE_LMK_MINFREE
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int "Minimum MiB of memory to free per reclaim"
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range 8 512
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default 128
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help
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Simple LMK will try to free at least this much memory per reclaim.
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config ANDROID_SIMPLE_LMK_TIMEOUT_MSEC
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int "Reclaim timeout in milliseconds"
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range 50 1000
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default 200
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help
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Simple LMK tries to wait until all of the victims it kills have their
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memory freed; however, sometimes victims can take a while to die,
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which can block Simple LMK from killing more processes in time when
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needed. After the specified timeout elapses, Simple LMK will stop
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waiting and make itself available to kill more processes.
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endif
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endif # if ANDROID
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endmenu
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