diff options
Diffstat (limited to 'include/linux/numa.h')
| -rw-r--r-- | include/linux/numa.h | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/include/linux/numa.h b/include/linux/numa.h index 110b0e5d0fb0..59df211d051f 100644 --- a/include/linux/numa.h +++ b/include/linux/numa.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_NUMA_H #define _LINUX_NUMA_H - +#include <linux/types.h> #ifdef CONFIG_NODES_SHIFT #define NODES_SHIFT CONFIG_NODES_SHIFT @@ -13,4 +13,53 @@ #define NUMA_NO_NODE (-1) +/* optionally keep NUMA memory info available post init */ +#ifdef CONFIG_NUMA_KEEP_MEMINFO +#define __initdata_or_meminfo +#else +#define __initdata_or_meminfo __initdata +#endif + +#ifdef CONFIG_NUMA +#include <linux/printk.h> +#include <asm/sparsemem.h> + +/* Generic implementation available */ +int numa_map_to_online_node(int node); + +#ifndef memory_add_physaddr_to_nid +static inline int memory_add_physaddr_to_nid(u64 start) +{ + pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", + start); + return 0; +} +#endif +#ifndef phys_to_target_node +static inline int phys_to_target_node(u64 start) +{ + pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", + start); + return 0; +} +#endif +#else /* !CONFIG_NUMA */ +static inline int numa_map_to_online_node(int node) +{ + return NUMA_NO_NODE; +} +static inline int memory_add_physaddr_to_nid(u64 start) +{ + return 0; +} +static inline int phys_to_target_node(u64 start) +{ + return 0; +} +#endif + +#ifdef CONFIG_HAVE_ARCH_NODE_DEV_GROUP +extern const struct attribute_group arch_node_dev_group; +#endif + #endif /* _LINUX_NUMA_H */ |