Hi Paul, After merging the rcu tree, today's linux-next build (arm multi_v7_defconfig) failed like this: In file included from arch/arm/kernel/asm-offsets.c:14:0: include/linux/sched.h: In function 'membarrier_sched_out': include/linux/sched.h:1680:3: error: implicit declaration of function 'sync_core' [-Werror=implicit-function-declaration] sync_core(); ^ Caused by commit 0d6eb99818da ("membarrier: Provide register sync core cmd") I have used the rcu tree from next-20170825 for today. -- Cheers, Stephen Rothwell -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html