Date: Mon, 13 Jun 2011 06:58:39 +0000 From: Eir Nym <eirnym@gmail.com> To: Garrett Cooper <yanegomi@gmail.com> Cc: Doug Barton <dougb@freebsd.org>, freebsd-current@freebsd.org Subject: Re: rc.d script to load kernel modules Message-ID: <BANLkTi=N56v9tgugTV93v9cK6BUbTgz0YA@mail.gmail.com> In-Reply-To: <BANLkTin67jUPdPhkknysw_OFXs3=1Y9Ucg@mail.gmail.com> References: <4DF3E98B.40108@FreeBSD.org> <BANLkTimhtz81=uGjJZfHzXW86LGGf562dA@mail.gmail.com> <BANLkTin67jUPdPhkknysw_OFXs3=1Y9Ucg@mail.gmail.com>
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On 13 June 2011 06:32, Garrett Cooper <yanegomi@gmail.com> wrote: > On Sun, Jun 12, 2011 at 11:11 PM, Eir Nym <eirnym@gmail.com> wrote: >> On 11 June 2011 22:17, Doug Barton <dougb@freebsd.org> wrote: >>> Howdy, >>> >>> Per discussion on -arch and the svn list about improving boot time and >>> stripping down the kernel to just that-which-cannot-be-modularized I cr= eated >>> the attached script to kldload modules that don't need to be in loader.= conf. >>> It cut quite a bit of time off my boot, so hopefully it will be useful = to >>> others as well. >>> >>> To use it just put everything that is being _load'ed in loader.conf int= o >>> kld_list in rc.conf[.local]. For example, mine has: >>> >>> kld_list=3D'umass coretemp ichwd linux nvidia if_wpi' >>> >>> If there is agreement that this is a good direction to go I'll be happy= to >>> commit this along with the relevant /etc/defaults/rc.conf and rc.conf.5 >>> changes. >>> >> >> How do you would suggest set tunables, which are readonly or have no >> sysctl(8) equivalent after boot-time? AFAIK loader can't set tunable >> if module is not loaded at boot-time. > > =C2=A0 =C2=A0Not true. Kernel tunables are really not that different (in > concept) from kernel-level environment variables. Certainly, they > would have less value if one's loading modules at boot (depending when > things are done -- i.e. how closely the sysctl pseudo service is run > to the proposed kld pseudo service), but sysctls can't be set until > the module (or respective OID leaf) has been created by the kernel > (somehow, i.e. via driver initialization, etc). > Thanks, > -Garrett > I see, I use tunables and it will be great if I can add tunables for module while load them from user space with rc(8).
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