On Sat, 11 Sep 2010, Bond wrote: > > > On Sat, Sep 11, 2010 at 6:22 PM, Carlo Caione <carlo.cai...@gmail.com> > wrote: > > http://www.kroah.com/log/linux/container_of.html > > I am not able to understand a single bit of the explanaition on the > above link. They have assumed I programmed PCI buses which I have > not.
you're making this too difficult -- all container_of() does is, given: * a structure definition, * the name of a member field within that structure, and * the address of that internal member field in an instance what you get back is the address of the enclosing structure. this allows you to work with member fields of a structure but, when you need to, "back up" to the structure they're contained in. kernel linked lists are built on this idea. http://crashcourse.ca/introduction-linux-kernel-programming/intermission-lets-talk-about-linked-lists-and-containerof-free rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Top-notch, inexpensive online Linux/OSS/kernel courses http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================
