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From: Keith Owens <kaos@ocs.com.au>
To: LA Walsh <law@sgi.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Power usage Q and parallel make question (separate issues)
Date: Thu, 01 Feb 2001 14:32:07 +1100	[thread overview]
Message-ID: <11659.980998327@kao2.melbourne.sgi.com> (raw)
In-Reply-To: Your message of "Wed, 31 Jan 2001 19:02:03 -0800." <3A78D1AB.2C2E743B@sgi.com>

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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  reply	other threads:[~2001-02-01  3:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-01-31 19:44 Power usage Q and parallel make question (separate issues) LA Walsh
2001-02-01  0:32 ` Keith Owens
2001-02-01  3:02   ` LA Walsh
2001-02-01  3:32     ` Keith Owens [this message]
2001-02-01  8:13       ` LA Walsh
2001-02-01  8:24         ` Keith Owens

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