kernel module parallel build?
John Baldwin
jhb at freebsd.org
Wed Dec 5 16:55:41 UTC 2012
On Tuesday, December 04, 2012 2:41:32 pm Ryan Stone wrote:
> On Tue, Dec 4, 2012 at 10:52 AM, John Baldwin <jhb at freebsd.org> wrote:
>
> > Hmm, I certainly see the module directories being built in parallel. Some
> > of
> > the make jobs may not be as obvious since links are silent (no output
> > unless
> > there is an error).
> >
> >
> This is definitely not the behaviour that I see trying to build any version
> of FreeBSD. I see the same behaviour as Andre: the depend and all targets
> both iterate through the module directories sequentially. It never builds
> two module subdirectories concurrently.
Hmm, I think I was confused by seeing kernel builds intermingle with the
associated modules. sys/modules/Makefile uses bsd.subdir.mk. I think I see
similar things in world builds where I will see parallel builds of bin vs sbin
vs usr.bin vs usr.sbin, but within each of those directories the builds go
sequentially. I think you would need to change bsd.subdir.mk if you want to
fix this.
--
John Baldwin
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