Hi Alex, On 2019/3/29 23:20, Alex Kogan wrote: > + > +static __always_inline void cna_init_node(struct mcs_spinlock *node, int cpuid, > + u32 tail) > +{ > + if (decode_numa_node(node->node_and_count) == -1) > + store_numa_node(node, numa_cpu_node(cpuid)); How about using cpu_to_node() here and #include <linux/topology.h> in this file, then the code can be reused for other architectures such as ARM64? Thanks Hanjun