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>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#ifndef _ASM_X8664_NUMA_H
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#define _ASM_X8664_NUMA_H 1
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#include <linux/nodemask.h>
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#include <asm/apicdef.h>
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struct bootnode {
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u64 start;
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u64 end;
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};
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extern int compute_hash_shift(struct bootnode *nodes, int numblks,
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int *nodeids);
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#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
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extern void numa_add_cpu(int cpu);
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extern void numa_init_array(void);
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extern int numa_off;
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extern void numa_set_node(int cpu, int node);
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extern void srat_reserve_add_area(int nodeid);
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extern int hotadd_percent;
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extern s16 apicid_to_node[MAX_LOCAL_APIC];
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extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
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extern unsigned long numa_free_all_bootmem(void);
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extern void setup_node_bootmem(int nodeid, unsigned long start,
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unsigned long end);
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#ifdef CONFIG_NUMA
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extern void __init init_cpu_to_node(void);
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static inline void clear_node_cpumask(int cpu)
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{
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clear_bit(cpu, (unsigned long *)&node_to_cpumask_map[cpu_to_node(cpu)]);
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}
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#else
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#define init_cpu_to_node() do {} while (0)
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#define clear_node_cpumask(cpu) do {} while (0)
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#endif
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#endif
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