On Thu, Dec 20, 2007 at 01:11:24PM +0000, Jan Beulich wrote: > With more and more sub-systems/sub-components leaving their footprint > in task handling functions, it seems reasonable to add notifiers that > these components can use instead of having them all patch themselves > directly into core files.
I agree that we probably want something like this. As do some others, so we already had a few a few attempts at similar things. The first one is from SGI and called PAGG (http://oss.sgi.com/projects/pagg/) and also includes allocating per-task data for it's users. Then also from SGI there has been a simplified version called pnotify that's also available from the website above. Later Matt Helsley had something called "Task Watchers" which lwn has an article on: http://lwn.net/Articles/208117/. For some reason neither ever made a lot of progess (performance problems?). As said by other we really should have a register/unregister API instead of exposing the implementation. Also please don't export anything until we actuall grow modular users in the tree. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/