Date: Wed, 16 Mar 2005 22:25:17 +0100 From: Jose M Rodriguez <josemi@freebsd.jazztel.es> To: Doug Barton <dougb@freebsd.org> Cc: current@freebsd.org Subject: Re: rcNG changes/aditions Message-ID: <200503162225.18726.freebsd@redesjm.local> In-Reply-To: <42375FD2.2080706@freebsd.org> References: <200503142306.54642.freebsd@redesjm.local> <200503152107.23496.freebsd@redesjm.local> <42375FD2.2080706@freebsd.org>
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El Martes, 15 de Marzo de 2005 23:21, Doug Barton escribi=F3: > Jose M Rodriguez wrote: > > El Martes, 15 de Marzo de 2005 02:43, Doug Barton escribi=F3: > >>Jose M Rodriguez wrote: > >>>Hi, > >>>I'll glad to know if this is of interest: > >>> > >>>update to PR conf/75137 (sound modules): I rework this adding > >>>support for preloaded modules to /etc/rc.subr > >> > >>Why is this necessary? My understanding is that modules load > >>themselves when called. Do the sound modules do this differently? > > > > This is not needed (I think). You can load modules > > via /boot/loader.conf, but may be more confortable if we 'go > > modules' in a future. > > I don't think you understand what I'm saying. For most modules, it is > not actually necessary to pre-load them at all. For example, I have > cd9660 as a module, it's not compiled into my kernel. When I mount a > cd9660 file system the kernel module is automatically loaded. There > is no need to pre-load it. The same is true of (most) modules that > create devices, such as ndis. This is true for, more or less 'logical' modules, But not for 'hard'=20 ones. You must have the sound support compiled into the kernel or the=20 needed modules loaded for sound to be detected. I think this can be needed also for buses like firewire or usb. And for=20 net 'hard' modules like if_fxp. > > I don't know the specifics of the sound module, I compile it into my > kernel. However, as you pointed out in the rare case that it's > necessary to actually pre-load a kernel module (such as agp), we have > a mechanism for that in loader.conf already. I don't think that > adding that code to rc.subr is a useful exercise, and in fact I would > oppose it as needless duplication of effort. > Allthough there are things like agp (now in generic kernel) that really=20 need to be loaded at boot, doing this at rc time is now used (grep=20 kldload /etc/rc.d/*) and have also pros. In the sound case, you may boot in a just installed system, add=20 'mixer_modules' to /etc/rc.conf as needed for your sound car, and do an=20 `/etc/rc.d/mixer restart'. You may get your sound configured and working without needing a reboot. Also, I think that our module system is now strong enough to comment out=20 things like usb or firewire from GENERIC and use module support in rc=20 for that. But this may require more work and testing. This kind of patches may=20 open the way to 'go modules' for many things now in GENERIC, or of=20 general use like sound. > >>>update to PR conf/74006 (named minor fixes): Fix a typo and umount > >>>dev in chroot in post_stop works > >> > >>Please submit this as followup to the PR. > > > > Will do. > > Thanks. > > Doug =2D- josemi
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