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