mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-29 05:55:02 +08:00
ae3c107cd8
ARM64 numa implementation is generic enough that RISC-V can reuse that implementation with very minor cosmetic changes. This will help both ARM64 and RISC-V in terms of maintanace and feature improvement Move the numa implementation code to common directory so that both ISAs can reuse this. This doesn't introduce any function changes for ARM64. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_GENERIC_NUMA_H
|
|
#define __ASM_GENERIC_NUMA_H
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2)
|
|
|
|
int __node_distance(int from, int to);
|
|
#define node_distance(a, b) __node_distance(a, b)
|
|
|
|
extern nodemask_t numa_nodes_parsed __initdata;
|
|
|
|
extern bool numa_off;
|
|
|
|
/* Mappings between node number and cpus on that node. */
|
|
extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
|
|
void numa_clear_node(unsigned int cpu);
|
|
|
|
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
|
|
const struct cpumask *cpumask_of_node(int node);
|
|
#else
|
|
/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
|
|
static inline const struct cpumask *cpumask_of_node(int node)
|
|
{
|
|
if (node == NUMA_NO_NODE)
|
|
return cpu_all_mask;
|
|
|
|
return node_to_cpumask_map[node];
|
|
}
|
|
#endif
|
|
|
|
void __init arch_numa_init(void);
|
|
int __init numa_add_memblk(int nodeid, u64 start, u64 end);
|
|
void __init numa_set_distance(int from, int to, int distance);
|
|
void __init numa_free_distance(void);
|
|
void __init early_map_cpu_to_node(unsigned int cpu, int nid);
|
|
void numa_store_cpu_info(unsigned int cpu);
|
|
void numa_add_cpu(unsigned int cpu);
|
|
void numa_remove_cpu(unsigned int cpu);
|
|
|
|
#else /* CONFIG_NUMA */
|
|
|
|
static inline void numa_store_cpu_info(unsigned int cpu) { }
|
|
static inline void numa_add_cpu(unsigned int cpu) { }
|
|
static inline void numa_remove_cpu(unsigned int cpu) { }
|
|
static inline void arch_numa_init(void) { }
|
|
static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#endif /* __ASM_GENERIC_NUMA_H */
|