2010/6/20 Shaz <shazalive@xxxxxxxxx>: > > > On Sun, Jun 20, 2010 at 9:10 AM, Joel Fernandes <agnel.joel@xxxxxxxxx> > wrote: >> >> > If a kernel code requires an external loadable module then will it get >> > loaded automatically? >> >> Yes it will be, after you install a module, depmod is run which >> generates a file called modules.dep . modules.dep lists all >> dependencies for every module. These dependencies are then >> automatically loaded by modprobe when you try to load the actual >> module. >> > > Actually the kernel code that I am replacing with my module initializes > earlier at kernel load and starts functioning and if my module is not > available at that time than it will crash or do something which I don't want > it to do. > >> >> > If the code requires the kernel module much earlier >> > than the filesystem is loaded and the module is made available than I >> > should >> > provide it earlier. This should require to make the external module be >> > part >> > of the kernel. So how might I do this? >> >> First of all, is the code going to be used again after it is used >> once? If not, then it is probably a better idea to include the kernel >> module in an initial ram disk (initrd). This solves both the problems >> - of loading a kernel module before the FS module on which it resides >> is loaded, and at the same time not being forced to include the module >> within the kernel itself. >> > > So will the initrd based solution be effective because initrd is loaded by > boot-loader and then the kernel uses it. Is there some way to keep on hold > the kernel code till my module is loaded if this is not effective? why not compile your module into kernel? > > Else I need to make my module part of the kernel. Do I need to change the > Makefiles for this apart from adding and connecting the Kconfigs? Noth > external and internal modules use kbuild so the Makefile should not be a > problem theoretically. But I am trying it since last night and it seems the > Makefile needs to be changed. The recursive nature might be giving problem > but the code does not get compiled at all! > > > -- > Shaz > > -- Best Regards Lin -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
