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Questions tagged [android-kernel]

Core component of Android OS that bridges between applications and the actual data processing done at the hardware level. It is based on the Linux kernel.

218 questions
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Android Compilation: No rule to make target

I am trying to compile an android kernel from source for an ODROID-XU4 (http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143452239825). I downloaded the source, added a few custom drivers & external programs, and now I am trying to…
James Schulman
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Android goldfish kernel IOCTL system call hook kernel panic

I modified some system calls. Except "ioctl", all of them are working good. When i try to "rmmod" on my kernel module, i see kernel panic. I'm using android-goldfish-3.4 kernel in the android emulator. Run emulator with custom kernel: emulator…
user1151618
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Running the modifed Goldfish kernel on Android from Source

I am trying to run a emulator from the Android source by loading the goldfish kernel with some of my configuration changes. Though I found a lot of questions on this, but could not find my answer. 1. I downloaded the android source. 2. I also…
ankur
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Sending netfilter hook message to user space module via netlink socket success but loop

I am a beginner in Android kernel space programming. In my modules, kernel and user space module are successfully communicating via netlink sockets and netfilter hook also works. But when I send netfilter message to user space module via netlink…
Vergil
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logger driver in android lollipop kernel

In android 4.4.2, logger driver (drivers/staging/android/logger.c) was used to read and write android logs to /dev/log/(main or system). In android lollipop, Logger driver logger.c is removed. Then how does logcat reads android logs? where is…
Roy Miller
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Packing Custom Android boot.img Error

I am receiving the following error every time I make a modified Nexus 6 kernel and use Peter Batard's mkbootimg tools (https://github.com/pbatard/bootimg-tools) to create a bootable image: android@ubuntu:~/android-sdk-linux/platform-tools$…
rourion
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HID Digitizer Descriptor doesn't perform well with landscape orientation

Use-case Implement a HID "Touch Screen" for a SmartPhone device using USB "Touch Screen" should operate well in either landscape or portrait orientation Dev Environment Samsung Galaxy 5 Android 5 Problem description When the phone is in the…
NadavRub
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Issues compiling Android Kernel + Cross Compiling with LiME

As the title suggests.. I am struggling over the last days to successfully compile LiME (Linux Memory Extractor) and load it on an Android Emulator or a physical device. To compile I am using arm-linux-androideabi-4.6 and I am currently on x64 14.04…
user3761291
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Is Android's Binder implementation always non-blocking for "void method"-calls without parameters?

Will IPC "void method"-calls without any parameters block the current thread/process? Or will the kernel just pause the caller-process/thread until the call finishes because the called process may do further IPC callbacks?
Shraal
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Where to find Android patches?

I have vanilla linux kernel version 2.6.27. I want to apply android specific patches and convert it to android linux kernel 2.6.27. Where can a user find the patches to convert a normal vanilla kernel into android kernel?
murugaprabu
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how to check whether the kernel is for android or linux?

I have the source code of a kernel. but i don't know whether the kernel is android kernel or Linux kernel. I have searched about it on google but i haven't found any proper answer. As i know ,android kernel is Linux kernel and some patches applied…
Jagdish
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Getting all Neighboring Cell IDs/RSSIs Android

I have used TelephonyManager API to get cell info which returns 6 or less neighbors with cell IDs/RSSIs. Same is the case if you communicate through RIL to get ARFCNs/RSSIs then we always get 6 neighbors. But normally there are more than 6 neighbors…
Ramiz Raja
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Android Source Code: Is there code to manage SIM cards?

I am trying to find the source code for SIM cards, or at least know the location. I found an interesting site and then got the source code for a Samsung Android system…
Devyn Collier Johnson
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Installing kernel modules in Android kernel

I am trying to develop a TCP traffic shaping solution with the help of netfilter hooks in linux kernel. Now I want to do the same in Android kernel. I used ubuntu and there I was able to install kernel module through insmod command. How to do the…
user1219784
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Unable to see any /sys/devices/xx interface created from kernel module loaded through k_vendor_module.rc

Trying to integrate a third part kernel vendor module to our android stack. Since this is module is not needed as part of early-init, decided to not put it under BOARD_VENDOR_RAMDISK_KERNEL_MODULES_LOAD which worked in the first place. Now I'm…
aTJ
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