I had created a root filesystem for an ARM target using rootstock, with something like: sudo rootstock –fqdn karmic –login ubuntu –password ubuntu –imagesize 4G –dist karmic –serial ttyS0 –seed ubuntu-desktop,openssh-server Once I decompress it into my NFS server root and I tried booting my target (loading the kernel via TFTP), I was surprised by a [...]
Overview ftrace is a tracing facility built into the Linux kernel. It originated in the real time enhancements efforts and is now merged into mainstream. However not all features are supported by all architectures. This overview is based around the x86 architecture as the rest will slowly catchup feature wise. General settings Mount the debugfs [...]
Every driver has an entry point function, minimaly defined as: static __init mydriver_init( void ) { return platform_driver_register(&my_driver); } module_init(mydriver_init); The __init macro is used to describe the function as only being required during initialisation time, so that the kernel can remove this function and release its memory after initialization. To recover memory used by [...]
Linux includes a set of defines in include/linux/autoconf.h after configuration which is included with every file. Eclipse misses this and grays out code which is actually being built. Configure the kernel (for example with make xconfig) to create include/linux/autoconf.h Start eclipse with -vmargs -Xmx512M or more to avoid memory issues. Create a new Makefile C project. In [...]
Install vpnc, sudo apt-get install vpnc network-manager-vpnc Try a manual connect, sudo vpnc And provide the login details: IPSec gateway example.com IPSec ID my-group IPSec secret my-group-pwd IKE Authmode hybrid Xauth username my-username Xauth password my-password Copy the configuration into a new profile sudo cp /etc/vpnc/example.conf /etc/vpnc/myprofile.conf And edit it with your details. You may [...]
Just because I keep forgetting… dpkg-scanpackages directory /dev/null | gzip -9c > directory/Packages.gz