Re: Power usage Q and parallel make question (separate issues)

[Keith Owens]

On Wed, 31 Jan 2001 19:02:03 -0800, 
LA Walsh <[e-mail]> 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.