Messages in this thread | | | Date | Wed, 6 Aug 2014 15:38:56 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [PATCH 2/2] x86: Add "make tinyconfig" to configure the tiniest possible kernel |
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On Wed, 6 Aug 2014, Josh Triplett wrote:
> diff --git a/arch/x86/Makefile b/arch/x86/Makefile > index 1568678..2b5ca16 100644 > --- a/arch/x86/Makefile > +++ b/arch/x86/Makefile > @@ -257,6 +257,10 @@ PHONY += kvmconfig > kvmconfig: > $(call mergeconfig,kvm_guest) > > +PHONY += tinyconfig > +tinyconfig: allnoconfig
Calling allnoconfig here makes "make tinyconfig" default to CONFIG_X86_32 even on 64 bit platforms and the caller would need to explicitly do "make ARCH=x86_64 tinyconfig" to avoid it. It's not clear that this is intended from the documentation of tinyconfig, that tiniest == 32 bit by default.
> + $(call mergeconfig,tiny) > + > define archhelp > echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)' > echo ' install - Install kernel using' > @@ -271,4 +275,5 @@ define archhelp > echo ' FDARGS="..." arguments for the booted kernel' > echo ' FDINITRD=file initrd for the booted kernel' > echo ' kvmconfig - Enable additional options for guest kernel support' > + echo ' tinyconfig - Configure the tiniest possible kernel' > endef > diff --git a/arch/x86/configs/tiny.config b/arch/x86/configs/tiny.config > new file mode 100644 > index 0000000..8f0e54c > --- /dev/null > +++ b/arch/x86/configs/tiny.config > @@ -0,0 +1,5 @@ > +CONFIG_CC_OPTIMIZE_FOR_SIZE=y > +CONFIG_KERNEL_XZ=y > +CONFIG_NOHIGHMEM=y > +CONFIG_OPTIMIZE_INLINING=y > +CONFIG_SLOB=y
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