Messages in this thread | | | Date | Wed, 4 Jan 2006 17:49:25 +0100 | From | Jesper Juhl <> | Subject | Re: [-mm patch] i386: enable 4k stacks by default |
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On 1/4/06, Adrian Bunk <bunk@stusta.de> wrote: > 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. > I just thought that you wanted to get as much testing in -mm as possible while still leaving the old stacksize option for those who don't yet trust 4K stacks. To get maximum testing making 4KSTACKS default Y and removing the "if DEBUG_KERNEL" conditional just seems to me to be the obvious choice...
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