On Thu 26 Jul 2007 09:34, Phil Wilshire pondered: > Bernd Schmidt wrote: > > This isn't necessarily a safe interface - assume you have two modules > > which want to replace the same exception vector, and you have the > > following order: > > load A > > load B > > unload A > > unload B > > > > > > Bernd > If you make B depend on A then B will have to unload first. > Just a thought
Since these are all kernel modules - dependancy checking (having B call a function in A should be caught by the standard kernel module install/remove routines. The only issue would be if B threw an exception into A. If A was not installed, then it would be caught by traps_c, and an unknown exception would print out, and the thread/application would be killed, or the kernel would panic. The complexity of handling this case (since it is unlikely to happen - if you are already in exception n, then why call a different exception via EXCEPT - just do a function call) isn't worth the effort (IMHO). -Robin _______________________________________________ Uclinux-dist-devel mailing list Uclinux-dist-devel@blackfin.uclinux.org http://blackfin.uclinux.org/mailman/listinfo/uclinux-dist-devel
