66 строки
1.3 KiB
C
66 строки
1.3 KiB
C
/* 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
|
|
#else
|
|
#define NODES_SHIFT 0
|
|
#endif
|
|
|
|
#define MAX_NUMNODES (1 << NODES_SHIFT)
|
|
|
|
#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 */
|