Re: [gentoo-user] Kernel ricing

[Alan McKinnon]

On 24/10/2013 10:58, Adam Carter wrote:
> The CFLAGs used when building the kernel are set in the Makefile;
> # grep HOSTCFLAGS /usr/src/linux/Makefile
> HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2
> -fomit-frame-pointer
>
> To build with other flags you set CFLAGS_KERNEL, so i've added a
> suitable -march to the standard ones for my system;
> export CFLAGS_KERNEL=" -Wall -Wmissing-prototypes -Wstrict-prototypes
> -O2 -fomit-frame-pointer -pipe -march=amdfam10"
>
> then make, install, reboot. In my case the riced kernel is the same size
> as the regular one, but the md5 is different. Its been up for an hour
> with no obvious issues, and does seem snappier, but of course my brain
> is full of cognitive bias. Has anyone else played with this? Any good or
> bad outcomes?
>


James is the boy to answer up here. He'll give you a decent answer sans
cognitive bias.

I see all you've done is specify -march; what does the build system
build for without that setting?



-- 
Alan McKinnon
alan.mckinnon@×××××.com