Messages in this thread | | | Date | Fri, 14 Apr 2006 13:02:22 -0400 | From | Theodore Ts'o <> | Subject | Re: [PATCH] make: add modules_update target |
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On Fri, Apr 14, 2006 at 10:06:56AM -0500, Kylene Jo Hall wrote: > Here is a a patch that adds a kernel build target called > "modules_update". > > The existing "modules_install" target blows away the entire > /lib/modules/`uname -r`/kernel directory and copies out every single > module when called at the top level. > > This new "modules_update" target only copies out modules that have > changed, using "cp -u". This less zealous method is a more efficient > approach to module installation for kernel developers working on single, > or small numbers of modules.
Hi Kylene,
This works as long as the .config hasn't been changed so that some configuration options haven't been changed so that a driver which had been previously built as a module is now built into the kernel. In that case, you really want to make sure the no-longer applicable .ko file has been removed from the system. If the developer knows that to be true, they can use your proposed modules_update without any problems.
As a suggestion, something that might be worth trying would be to change to modules_install so that it uses cp -u, but also so that it tries to delete all files that could have previously installed as modules (by using the obj-y list). This should hopefully speed up modules_install, and make it do the right thing all the time.
Regards,
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