On Sat, 2007-09-22 at 18:07 +0200, Michael Kerrisk wrote: > Hello Bernd, > > Please don't trim the CC list when replying! I nearly did not see > your reply, and others will have missed it also.
Yup. > On 9/22/07, Bernd Eckenfels <[EMAIL PROTECTED]> wrote: > > In article <[EMAIL PROTECTED]> you wrote: > > > 1. This design stretches the POSIX timers API in strange > > > ways. > > > > Maybe it is possible to reimplement the POSIX API in usermode using the > > kernel's FD implementation? Yikes. > It's a clever idea... Without thinking on it too long, I'm not sure > whether or not there might be some details which would make this > difficult. You'd need be quite masochistic to start such a project. The POSIX timer API consists mostly of corner cases and I doubt that you get them even halfway under control in a pure user space implementation. It would be a rather huge performance penalty as well. You need at least two user space context switches to get the most simple cases resolved. > > (and drop the posix support from kernel) > > However we couldn't drop POSIX support from the kernel, because that > would break the ABI. True. So there is no point in reinventing the wheel. tglx - 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/