Date: Wed, 5 Dec 2012 11:42:17 -0500 From: John Baldwin <jhb@freebsd.org> To: Ryan Stone <rysto32@gmail.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, Andre Oppermann <andre@freebsd.org> Subject: Re: kernel module parallel build? Message-ID: <201212051142.18361.jhb@freebsd.org> In-Reply-To: <CAFMmRNzmfHcC3S%2BFfh2YjWDdzr=ddHEggrg%2Biyjjfc6COKdKSw@mail.gmail.com> References: <5083D84E.50903@freebsd.org> <201212041052.51476.jhb@freebsd.org> <CAFMmRNzmfHcC3S%2BFfh2YjWDdzr=ddHEggrg%2Biyjjfc6COKdKSw@mail.gmail.com>
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On Tuesday, December 04, 2012 2:41:32 pm Ryan Stone wrote: > On Tue, Dec 4, 2012 at 10:52 AM, John Baldwin <jhb@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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