diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e0998997943bf789cddb11967781b595850574bc..9125964af409b641df741e775761b3394b5b69c1 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -453,6 +453,10 @@ config NODES_SHIFT default "4" depends on NEED_MULTIPLE_NODES +config USE_PERCPU_NUMA_NODE_ID + def_bool y + depends on NUMA + config ARCH_SELECT_MEMORY_MODEL def_bool y depends on PPC64 diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index c9202151079f2b1d6e99af4569b82ce68c785573..5ecf7ea52ad846463ab2ba028ae31dc62cedc0a3 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -20,19 +20,6 @@ struct device_node; #include -static inline int cpu_to_node(int cpu) -{ - int nid; - - nid = numa_cpu_lookup_table[cpu]; - - /* - * During early boot, the numa-cpu lookup table might not have been - * setup for all CPUs yet. In such cases, default to node 0. - */ - return (nid < 0) ? 0 : nid; -} - #define parent_node(node) (node) #define cpumask_of_node(node) ((node) == -1 ? \ diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index e2a4232c5871a19056b0b5b666adb540a17b1403..d7252adea759570911c24acc877fd4631c29973f 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -390,6 +390,7 @@ void smp_prepare_boot_cpu(void) #ifdef CONFIG_PPC64 paca[boot_cpuid].__current = current; #endif + set_numa_node(numa_cpu_lookup_table[boot_cpuid]); current_set[boot_cpuid] = task_thread_info(current); } @@ -750,6 +751,11 @@ void start_secondary(void *unused) } traverse_core_siblings(cpu, true); + /* + * numa_node_id() works after this. + */ + set_numa_node(numa_cpu_lookup_table[cpu]); + smp_wmb(); notify_cpu_starting(cpu); set_cpu_online(cpu, true);