[linux-audio-user] realtime-lsm in the kernel

[John Check]

On Thursday 09 September 2004 04:03 pm, Eric Dantan Rzewnicki wrote:
> On Thu, Sep 09, 2004 at 09:24:24PM +0300, David Baron wrote:
> > On Thursday 09 September 2004 19:00,
> >
> > linux-audio-user-request at music.columbia.edu wrote:
> > > Go for it. i would definetly like to save the extra step of compiling
> > > the realtime lsm each time i upgrade my kernel.. And i think it might
> > > prove useful even for non audio users.. Often security stuff likes to
> > > mlock small portions of memory, too, etc..
> >
> > Yes, except that the realtime-lsm precompiled binary is not updated on
> > Sid each time the kernel is. The only way to keep it current is to
> > compile it yourself. Compiles quickly and reliably--just remember to copy
> > the .ko to the correct place and then reboot.
>
> I've been keeping a symlink /usr/src/realtime ->
> /usr/src/realtime-<current-verson>
>
> Then in my /etc/init.d/bootmisc.sh I have:
>
> insmod /usr/src/realtime/realtime.ko <options>
>
> I may have the actual module name wrong there, but that gives the idea.
> When I rebuild the lsm for each new kernel I just do a make clean; make.
> No make install, hence the insmod instead of modprobe. I asked joq if
> this was ok earlier this year and he didn't see a problem with it. Just
> one more way of handling it.

Really, the package system for debian is pretty easy and when you've got a 
package already most of the work is already done.. Make a couple of edits to 
the control files and build. The kernel-utils make it easy:

make-kpkg clean && make-kpkg kernel-image modules-image && dpkg 
-i ../kernel-image.deb ../modules-image.deb && reboot

or portions thereof.

>
> I'm not sure how to work this into debian longterm. Probably Lee's idea
> to get it in the kernel is the best plan. The other option is to have
> some crazy soul paying attention to debian kernel builds and getting a
> new lsm.deb built and uploaded to unstable for every new kernel. I would

More like get every kernel package builder to carry the realtime-lsm source.
Pretty sure that's how they provide the ALSA packages

> do it, but (other than 4 years of using debian a bare minimum of
> 40hrs/week) I haven't even started studying for becoming a debian
> developer, yet, let alone looking for a sponsor ... it's on the todo
> list, but that's a mile long and growing. Since it's such a small piece
> of code new deb's probably aren't worth the effort, anyway.
>
> Let's give Lee whatever support he needs to get this thing into Linux
> proper.
>
> -Eric Rz.