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7c43769a97
Recently there were some changes to the meaning of node_possible_map, and it is quite strange: - the node without memory would be set in node_possible_map - but some node with less NODE_MIN_SIZE will be kicked out of node_possible_map. fix it by adding strict_setup_node_bootmem(). Also, remove unparse_node(). so result will be: 1. cpu_to_node() will return online node only (nearest one) 2. apicid_to_node() still returns the node that could be not online but is set in node_possible_map. 3. node_possible_map will include nodes that mem on it are less NODE_MIN_SIZE v2: after move_cpus_to_node change. [ Impact: get node_possible_map right ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <4A0C49BE.6080800@kernel.org> [ v3: various small cleanups and comment clarifications ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#ifndef _ASM_X86_NUMA_64_H
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#define _ASM_X86_NUMA_64_H
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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_init_array(void);
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extern int numa_off;
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extern s16 apicid_to_node[MAX_LOCAL_APIC];
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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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/*
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* Too small node sizes may confuse the VM badly. Usually they
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* result from BIOS bugs. So dont recognize nodes as standalone
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* NUMA entities that have less than this amount of RAM listed:
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*/
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#define NODE_MIN_SIZE (4*1024*1024)
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extern void __init init_cpu_to_node(void);
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extern void __cpuinit numa_set_node(int cpu, int node);
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extern void __cpuinit numa_clear_node(int cpu);
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extern void __cpuinit numa_add_cpu(int cpu);
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extern void __cpuinit numa_remove_cpu(int cpu);
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#else
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static inline void init_cpu_to_node(void) { }
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static inline void numa_set_node(int cpu, int node) { }
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static inline void numa_clear_node(int cpu) { }
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static inline void numa_add_cpu(int cpu, int node) { }
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static inline void numa_remove_cpu(int cpu) { }
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#endif
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#endif /* _ASM_X86_NUMA_64_H */
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