Re: linux-next: build failure after merge of the rcu tree

Paul E. McKenney
2014-12-27T15:57:16Z

On Fri, Dec 26, 2014 at 06:51:20PM +1100, Stephen Rothwell wrote:
> Hi Paul,
>
> After merging the rcu tree, today's linux-next build (powerpc
> allyesconfig) failed like this:
>
> In file included from arch/powerpc/include/asm/kvm_ppc.h:30:0,
> from arch/powerpc/kernel/setup_64.c:68:
> include/linux/kvm_host.h:366:21: error: field 'srcu' has incomplete type
> struct srcu_struct srcu;
> ^
> include/linux/kvm_host.h:367:21: error: field 'irq_srcu' has incomplete type
> struct srcu_struct irq_srcu;
> ^
>
> Caused by commit f01a973369dd ("srcu: Isolate srcu sections using
> CONFIG_SRCU"). Please stop readding that commit after until it is
> fixed :-(
>
> I have reverted that commit for today (again :-().

Hello, Stephen,

Please accept my apologies for the hassle! I had removed that commit
for the duration of the merge window, and forgotten about it when I
re-added all my non-3.19 commits. :-/

Could you please send your .config? Or let me know whether it has
CONFIG_KVM=n?

Pranith, if Stephen has CONFIG_KVM=n, it might be best to move the
"select SRCU" to "config PPC" in arch/powerpc/Kconfig. Are you able
to cross-build powerpc?

Thanx, Paul