On Wednesday, December 05, 2012 6:51:17 pm Damien Fleuriot wrote: > > On 5 Dec 2012, at 18:39, Warner Losh <i...@bsdimp.com> wrote: > > > > > On Dec 5, 2012, at 9:42 AM, John Baldwin wrote: > > > >> On Tuesday, December 04, 2012 2:41:32 pm Ryan Stone wrote: > >>> On Tue, Dec 4, 2012 at 10:52 AM, John Baldwin <j...@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. > > > > The builds are in parallel, just that the parallelism is low because it is > > only parallel within the module being built. Would love to see a fix. > > > > Warner > > > > All trolling aside, I believe an awesome fix to be setting module override in > /etc/make.conf to only build the 4-5 specific modules one needs. > > To be honest I think this configuration tweak should be advertised a bit more > as it definitely speeds up kernel builds. > > I would be happy to check if this is advertised in the handbook in the > "rebuilding kernel" section and enhance its visibility if required. > > I can provide en_US and fr_FR.
Better than doing it in /etc/make.conf (or /etc/src.conf) is doing it direclty in the kernel config file itself via makeoptions MODULES_OVERRIDE="foo" You can use multiple of these (with +=) in a config file as well. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
