forked from mirrors/linux
8ced0c6231
Avoid vm_area when copying to or from binder buffers. Instead, new copy functions are added that copy from kernel space to binder buffer space. These use kmap_atomic() and kunmap_atomic() to create temporary mappings and then memcpy() is used to copy within that page. Also, kmap_atomic() / kunmap_atomic() use the appropriate cache flushing to support VIVT cache architectures. Allow binder to build if CPU_CACHE_VIVT is defined. Several uses of the new functions are added here. More to follow in subsequent patches. Signed-off-by: Todd Kjos <tkjos@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1.7 KiB
Text
59 lines
1.7 KiB
Text
# SPDX-License-Identifier: GPL-2.0
|
|
menu "Android"
|
|
|
|
config ANDROID
|
|
bool "Android Drivers"
|
|
---help---
|
|
Enable support for various drivers needed on the Android platform
|
|
|
|
if ANDROID
|
|
|
|
config ANDROID_BINDER_IPC
|
|
bool "Android Binder IPC Driver"
|
|
depends on MMU
|
|
default n
|
|
---help---
|
|
Binder is used in Android for both communication between processes,
|
|
and remote method invocation.
|
|
|
|
This means one Android process can call a method/routine in another
|
|
Android process, using Binder to identify, invoke and pass arguments
|
|
between said processes.
|
|
|
|
config ANDROID_BINDERFS
|
|
bool "Android Binderfs filesystem"
|
|
depends on ANDROID_BINDER_IPC
|
|
default n
|
|
---help---
|
|
Binderfs is a pseudo-filesystem for the Android Binder IPC driver
|
|
which can be mounted per-ipc namespace allowing to run multiple
|
|
instances of Android.
|
|
Each binderfs mount initially only contains a binder-control device.
|
|
It can be used to dynamically allocate new binder IPC devices via
|
|
ioctls.
|
|
|
|
config ANDROID_BINDER_DEVICES
|
|
string "Android Binder devices"
|
|
depends on ANDROID_BINDER_IPC
|
|
default "binder,hwbinder,vndbinder"
|
|
---help---
|
|
Default value for the binder.devices parameter.
|
|
|
|
The binder.devices parameter is a comma-separated list of strings
|
|
that specifies the names of the binder device nodes that will be
|
|
created. Each binder device has its own context manager, and is
|
|
therefore logically separated from the other devices.
|
|
|
|
config ANDROID_BINDER_IPC_SELFTEST
|
|
bool "Android Binder IPC Driver Selftest"
|
|
depends on ANDROID_BINDER_IPC
|
|
---help---
|
|
This feature allows binder selftest to run.
|
|
|
|
Binder selftest checks the allocation and free of binder buffers
|
|
exhaustively with combinations of various buffer sizes and
|
|
alignments.
|
|
|
|
endif # if ANDROID
|
|
|
|
endmenu
|