Linux Archive

Linus Torvalds included patches into the mainline tree which implement a stable userspace driver API into the Linux kernel. The stable driver API was already announced a year ago by Greg Kroah-Hartman. Now the last patches were uploaded and the API was included in Linus' tree. The idea of the API is to make life easier for driver developers: "This interface allows the ability to write the majority of a driver in userspace with only a very small shell of a driver in the kernel itself. It uses a char device and sysfs to interact with a userspace process to process interrupts and control memory accesses."

"Remember the 1980s worries about how the 'forking' of Unix could hurt that operating system's chances for adoption? That was nothing compared to the mess we've got today with Linux, where upwards of 300 distributions vie for the attention of computer users seeking an alternative to Windows."

"The problem is, for me, and many other developers, administrators or just normal users, that if you want to use applications from a different OS, you have to reboot and boot into the other OS. Sometimes, when you, for example, just want to do a quick test of a newly compiled application, and go back to work, it is very inconvenient and time consuming. Standard ways of dealing with these problems is either creating virtual machine for Linux, setting up two PCs (one with Windows, second with Linux) or using Cygwin/SFU (Services for Unix). But there is also another way, which allows you to run Linux on Windows natively - coLinux."

Version 5.0.2 of Yellow Dog Linux was recently released. It includes kernel 2.6.22rc4, SDK v2.0 for Cell BE, more than 70 bug fixes and updates, continued support for both 32- and 64-bit systems and has beta IBM 'System p' support.

As the number of Linux kernel contributors continues to grow, core developers are finding themselves mostly managing and checking, not coding, said Greg Kroah-Hartman, maintainer of USB and PCI support in Linux and co-author of Linux Device Drivers, in a talk at the Linux Symposium in Ottawa Thursday. In the latest kernel release, the most active 30 developers authored only 30% of the changes, while two years ago, the top 20 developers did 80% of the changes, he said.

"Hans Reiser is waiting for me, standing on the other side of an imitation-wood table. The room is small, the concrete walls bare. A guard locks the steel door from the outside. There is no sound. Reiser is wearing the red jumpsuit of a prisoner in solitary confinement, though he has been allowed to meet with me in this chilly visiting room. There was a time when he was known as a cantankerous but visionary open source programmer. His work was funded by the government; he was widely credited (and sometimes reviled) for rethinking the structure of the Linux operating system. Now he is known as prisoner BFP563."