Re: [-mm patch] i386: enable 4k stacks by default

Adrian Bunk
2006-01-04T16:44:47Z

On Wed, Jan 04, 2006 at 05:39:14PM +0100, Jesper Juhl wrote:
> On 1/4/06, Adrian Bunk <bunk@stusta.de> wrote:
> > This patch enables 4k stacks by default.
> >
> > 4k stacks have become a well-tested feature used fore a long time in
> > Fedora and even in RHEL 4.
> >
> > There are no known problems in in-kernel code with 4k stacks still
> > present after Neil's patch that went into -mm nearly two months ago.
> >
> > Defaulting to 4k stacks in -mm kernel will give some more testing
> > coverage and should show whether there are really no problems left.
> >
> > Keeping the option for now should make the people happy who want to use
> > the experimental -mm kernel but don't trust the well-tested 4k stacks.
> >
> >
> > Signed-off-by: Adrian Bunk <bunk@stusta.de>
> >
> > --- linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig.debug.old 2006-01-04 11:43:55.000000000 +0100
> > +++ linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig.debug 2006-01-04 11:44:14.000000000 +0100
> > @@ -53,8 +53,8 @@
> > If in doubt, say "N".
> >
> > config 4KSTACKS
> > - bool "Use 4Kb for kernel stacks instead of 8Kb"
> > - depends on DEBUG_KERNEL
> > + bool "Use 4Kb for kernel stacks instead of 8Kb" if DEBUG_KERNEL
>
> Why "if DEBUG_KERNEL" ?

This is simply the same as before with the defaults inverted.

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed