6ec6e0d9f2
For example, If the physical address layout on a two node system with 8 GB memory is something like: node 0: 0-2GB, 4-6GB node 1: 2-4GB, 6-8GB Current kernels fail to boot/detect this NUMA topology. ACPI SRAT tables can expose such a topology which needs to be supported. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef _ASM_X8664_NUMA_H
|
|
#define _ASM_X8664_NUMA_H 1
|
|
|
|
#include <linux/nodemask.h>
|
|
#include <asm/apicdef.h>
|
|
|
|
struct bootnode {
|
|
u64 start;
|
|
u64 end;
|
|
};
|
|
|
|
extern int compute_hash_shift(struct bootnode *nodes, int numblks,
|
|
int *nodeids);
|
|
|
|
#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
|
|
|
|
extern void numa_add_cpu(int cpu);
|
|
extern void numa_init_array(void);
|
|
extern int numa_off;
|
|
|
|
extern void numa_set_node(int cpu, int node);
|
|
extern void srat_reserve_add_area(int nodeid);
|
|
extern int hotadd_percent;
|
|
|
|
extern s16 apicid_to_node[MAX_LOCAL_APIC];
|
|
|
|
extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
|
|
extern unsigned long numa_free_all_bootmem(void);
|
|
extern void setup_node_bootmem(int nodeid, unsigned long start,
|
|
unsigned long end);
|
|
|
|
#ifdef CONFIG_NUMA
|
|
extern void __init init_cpu_to_node(void);
|
|
|
|
static inline void clear_node_cpumask(int cpu)
|
|
{
|
|
clear_bit(cpu, (unsigned long *)&node_to_cpumask_map[cpu_to_node(cpu)]);
|
|
}
|
|
|
|
#else
|
|
#define init_cpu_to_node() do {} while (0)
|
|
#define clear_node_cpumask(cpu) do {} while (0)
|
|
#endif
|
|
|
|
#endif
|