How to compile DTS to DTB from Linux kernel and manually ?
Lets say, you have been trying to compile Linux kernel source code for Raspberry Pi following steps … Read more
Core Kernel
Core Kernel
What is Linux Out-Of-Memory OOM Killer ?
Major distribution kernels set the default value of /proc/sys/vm/overcommit_memory to zero, which means that processes can request … Read more
How to avoid a process from being killed in case of Out of Memory ?
In our previous post, we understood “What is Out of Memory Killer ?” In this post, we … Read more
insmod: ERROR: could not insert module hello.ko
We tried to write a simple class driver framework which will create a directory in /sys/class, we … Read more
Understanding Linux Kernel Version Numbering
The main Linux kernel versions comes from the Linux Torvald who is author of Linux kernel, from … Read more
How to recreate dts file from a running Android device ?
As we have seen in “How to cross compile static dtc for ARM” we are able to … Read more
How to recreate dts file from live Embedded device ?
Sometimes it happens that you don’t have source code of the device on which you are working … Read more
How to cross compile static dtc for ARM ?
As we seen in our previous post, “How to Compile and Install device-tree-compiler (DTC) On Ubuntu”, we … Read more
What is the difference between setup_irq and request_irq in Linux kernel interrupts ?
Timers are setup very early, before the request_irq() infrastructure has been initialised. Hence, setup_irq is used to … Read more
How to invoke OOM Killer manually for understanding which process gets killed first ?
As we have seen in our previous post “Understanding Linux OOM Killer and avoiding perticular process from … Read more
Send and receive data from user space and kernel using Netlink sockets
As mentioned in Linux kernel souce code net/netlink/af_netlink.c, netlink is a Kernel-user communication protocol which allows user … Read more
Communication between user-space and kernel space using Netlink sockets
As mentioned in Linux kernel souce code net/netlink/af_netlink.c, netlink is a Kernel-user communication protocol which allows user … Read more