1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_ALPHA_TOPOLOGY_H 3 #define _ASM_ALPHA_TOPOLOGY_H 4 5 #include <linux/smp.h> 6 #include <linux/threads.h> 7 #include <linux/numa.h> 8 #include <asm/machvec.h> 9 10 #ifdef CONFIG_NUMA cpu_to_node(int cpu)11static inline int cpu_to_node(int cpu) 12 { 13 int node; 14 15 if (!alpha_mv.cpuid_to_nid) 16 return 0; 17 18 node = alpha_mv.cpuid_to_nid(cpu); 19 20 #ifdef DEBUG_NUMA 21 BUG_ON(node < 0); 22 #endif 23 24 return node; 25 } 26 27 extern struct cpumask node_to_cpumask_map[]; 28 /* FIXME: This is dumb, recalculating every time. But simple. */ cpumask_of_node(int node)29static const struct cpumask *cpumask_of_node(int node) 30 { 31 int cpu; 32 33 if (node == NUMA_NO_NODE) 34 return cpu_all_mask; 35 36 cpumask_clear(&node_to_cpumask_map[node]); 37 38 for_each_online_cpu(cpu) { 39 if (cpu_to_node(cpu) == node) 40 cpumask_set_cpu(cpu, node_to_cpumask_map[node]); 41 } 42 43 return &node_to_cpumask_map[node]; 44 } 45 46 #define cpumask_of_pcibus(bus) (cpu_online_mask) 47 48 #endif /* !CONFIG_NUMA */ 49 # include <asm-generic/topology.h> 50 51 #endif /* _ASM_ALPHA_TOPOLOGY_H */ 52
