diff options
Diffstat (limited to 'include/asm-x86/topology.h')
| -rw-r--r-- | include/asm-x86/topology.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h index f8706b2a3d88..e612ed8d2bc7 100644 --- a/include/asm-x86/topology.h +++ b/include/asm-x86/topology.h @@ -30,13 +30,24 @@ #include <asm/mpspec.h> /* Mappings between logical cpu number and node number */ -extern u16 cpu_to_node_map[]; +DECLARE_PER_CPU(u16, x86_cpu_to_node_map); +extern u16 __initdata x86_cpu_to_node_map_init[]; +extern void *x86_cpu_to_node_map_early_ptr; extern cpumask_t node_to_cpumask_map[]; +#define NUMA_NO_NODE ((u16)(~0)) + /* Returns the number of the node containing CPU 'cpu' */ static inline int cpu_to_node(int cpu) { - return cpu_to_node_map[cpu]; + u16 *cpu_to_node_map = (u16 *)x86_cpu_to_node_map_early_ptr; + + if (cpu_to_node_map) + return cpu_to_node_map[cpu]; + else if (per_cpu_offset(cpu)) + return per_cpu(x86_cpu_to_node_map, cpu); + else + return NUMA_NO_NODE; } /* |