Fails to build Octeon kernel

[jcowgill]

I've just tried to rebuild the full Debian kernel with all the different CPU flavours with the CI20 patches applied. The Loongson flavours build fine but the Octeon flavour fails with:

arch/mips/built-in.o: In function `jz_wait_irqoff':
idle.c:(.text+0x1d118): undefined reference to `r4k_blast_dcache'
idle.c:(.text+0x1d11c): undefined reference to `r4k_blast_dcache'
/home/jcowgill/linux/linux/Makefile:891: recipe for target 'vmlinux' failed

Presumably because arch/mips/mm/c-r4k.c where r4k_blast_dcache is not included in Octeon builds.

[ZubairLK]

Do the ci20 patches break it? Or does mainline 3.16 doesn't build octeon..

You are checking the 3.16 branch right. Not 3.0.8?

[jcowgill]

Yes the ci20 patches break it. Caused by this commit: df7fddc

[ZubairLK]

In arch/mips/kernel/idle.c , r4k_blast_dcache is added as an extern. I guess that causes it.
Would it be wise to wrap an ifdef around it for jz4780?

df7fddc#diff-41daf0317d230554ab5e59efee6e8311

[ZubairLK]

closing this issue. as we upstream this won't happen.