On Tue, May 24, 2011 at 8:14 PM, DG <dangets@xxxxxxxxx> wrote: > On Tue, May 24, 2011 at 11:47 AM, Robert P. J. Day > <rpjday@xxxxxxxxxxxxxx> wrote: >> On Tue, 24 May 2011, Jim Cromie wrote: >> >>> over at http://code.google.com/p/ldd3/ >>> it says: >>> The famous "Linux Device Drivers" released the sample code. but the >>> code does not reflect the latest kernel updates, some of code cannot >>> even compile. This project is to make it compatible with the current >>> kernel. >>> >>> http://lwn.net/Kernel/LDD3/ >>> http://examples.oreilly.com/9780596005900/ >> >> Âthe one caution i would give here is that quite a bit of code in >> LDD3 shouldn't be updated, anyway, since it reflects features that >> have been deprecated for quite some time. >> >> Âfor instance, no one should be writing proc files anymore. Âalso, >> ioctl()s are also discouraged for the most part. Âso i would be >> selective about what parts of LDD3 code *should* be updated as >> examples of good kernel programming. >> >> rday > Robert is right, the drivers are quite old. As Robert says proc files are deprecated in favor of sysfs and ioctl are discouraged in favor of netlink sockets. Another example is that most LDD3 driver modules are loaded with a script that create the device nodes. Unless your system is a embedded device (an even in that case) you should let udev do this). So instead of having drivers that just compile cleanly and works, it would be better to update the APIs the drivers use and how they interact with userspace. > There is a repo on GitHub with the same purpose. ÂI haven't checked it > out personally, but it's probably worth a look. > > https://github.com/martinezjavier/ldd3 > As the author of the repo I can tell that the drivers compile with kernels 2.6.32, 2.6.35 and from 2.6.37 forward (including 2.6.39 and linux-next). I create it for academic purposes, I haven't thest all the drivers, only the ones I needed for the students. Best regards, -- Javier MartÃnez Canillas (+34) 682 39 81 69 PhD Student in High Performance Computing Computer Architecture and Operating System Department (CAOS) Universitat AutÃnoma de Barcelona Barcelona, Spain _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
