On Tue, 22 Nov 2011, John Baldwin wrote:
Think of standalone modules that are not built as part of a kernel (e.g. 3rd party device drivers). In general we should avoid having structures change size for kernel options, especially common structures. It just adds lots of pain and suffering and complexity. We are stuck with it for PAE on i386 (which causes pain), and for LOCK_PROFILING (but that is sufficiently rare and expensive it seems to be ok). I think 8 bytes for bpf packet is not sufficiently expensive to justify the extra headache. Just always leave the new field in.
This is exactly what I was thinking of -- thanks for making more concrete. Sorry for the radio silence yesterday; too many meetings. -Ben _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
