On Wed, Jul 18, 2012 at 11:46:39AM -0400, Dave Jones wrote:
> On Wed, Jul 18, 2012 at 11:28:38AM -0400, Darryl L. Pierce wrote:
> > I'm trying to get up to speed with Linux kernel development and have a
> > few questions:
> >
> > 1. According to the book I'm reading (_Linux Kernel Development_ by
> > Robert Love) the current kernel's configuration can be found at
> > /proc/config.gz. But on Fedora, that's not the case, and it's in /boot/
> > as config-{VERSION}. How do I use this in the same way that I would have
> > used /proc/config.gz?
>
> It's the same format, but the one in boot isn't gzipped, and doesn't use
> up kernel memory.
When I copied it into my development tree as .config and did:
make oldconfig
the environment seemed to want to redo the whole thing. Maybe I'm doing
something wrong?
> > 2. On the kernel-janitors mailing list I asked how to get started, and
> > was recommended to use clang to build the kernel and submit patches to
> > fix errors reported. Has anybody successfully built the kernel usin
> > clang packaged for Fedora? If so, how? I tried:
> >
> > make cc=clang
> >
> > and the build immediately failed on inline assembler code. I'd
> > appreciate a recommendation on how to approach building that way.
>
> If you're just starting out, I'd advise something simpler until you're
> comfortable working on the kernel. This isn't a small amount of work
> and there's plenty of other low-hanging fruit.
I'm more interested in doing this to get some experience with the code
and the overall workflow of submitting patches to the kernel developers.
> If you're determined however, I'd start by reading up at http://llvm.linuxfoundation.org/index.php/Main_Page
> The stock kernel.org tree lacks some of the work already done.
> (I've no idea on the state/quality of the patches already done, and whether
> they're even mergable upstream)
That's my main concern about this approach, that I'm trying to do
something too cutting edge when I'm not quite ready for that.
--
Darryl L. Pierce <mcpierce@xxxxxxxxx>
http://mcpierce.multiply.com/
"What do you care what people think, Mr. Feynman?"
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