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SubjectRe: Power usage Q and parallel make question (separate issues)
Date
On Wed, 31 Jan 2001 19:02:03 -0800, 
LA Walsh <law@sgi.com> wrote:
>This seems to serialize the delete, run the mod-installs in parallel, then run the
>depmod when they are done.

It works, until somebody does this

make -j 4 modules modules_install

There is not, and never has been, any interlock between make modules
and make modules_install. If you let modules_install run in parallel
then people will be tempted to issue the incorrect command above
instead of the required separate commands.

make -j 4 modules
make -j 4 modules_install

You gain a few seconds on module_install but leave more room for user
error.

All of this is cleaned up in the 2.5 kbuild system (work in progress).
I have carefully coded the 2.5 kbuild system so it can be used on 2.4
kernels as well. If you don't mind being an earlier adopter, this will
be fixed in a few weeks.

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