diff options
Diffstat (limited to 'include/linux/numa_memblks.h')
| -rw-r--r-- | include/linux/numa_memblks.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h new file mode 100644 index 000000000000..cfad6ce7e1bd --- /dev/null +++ b/include/linux/numa_memblks.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __NUMA_MEMBLKS_H +#define __NUMA_MEMBLKS_H + +#ifdef CONFIG_NUMA_MEMBLKS +#include <linux/types.h> + +#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2) + +void __init numa_set_distance(int from, int to, int distance); +void __init numa_reset_distance(void); + +struct numa_memblk { + u64 start; + u64 end; + int nid; +}; + +struct numa_meminfo { + int nr_blks; + struct numa_memblk blk[NR_NODE_MEMBLKS]; +}; + +int __init numa_add_memblk(int nodeid, u64 start, u64 end); +void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi); + +int __init numa_cleanup_meminfo(struct numa_meminfo *mi); + +int __init numa_memblks_init(int (*init_func)(void), + bool memblock_force_top_down); + +#ifdef CONFIG_NUMA_EMU +int numa_emu_cmdline(char *str); +void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys, + unsigned int nr_emu_nids); +u64 __init numa_emu_dma_end(void); +void __init numa_emulation(struct numa_meminfo *numa_meminfo, + int numa_dist_cnt); +#else +static inline void numa_emulation(struct numa_meminfo *numa_meminfo, + int numa_dist_cnt) +{ } +static inline int numa_emu_cmdline(char *str) +{ + return -EINVAL; +} +#endif /* CONFIG_NUMA_EMU */ + +#ifdef CONFIG_NUMA_KEEP_MEMINFO +extern int phys_to_target_node(u64 start); +#define phys_to_target_node phys_to_target_node +extern int memory_add_physaddr_to_nid(u64 start); +#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid +#endif /* CONFIG_NUMA_KEEP_MEMINFO */ + +#endif /* CONFIG_NUMA_MEMBLKS */ + +#endif /* __NUMA_MEMBLKS_H */ |