forked from Minki/linux
34dc9e7496
This patch changes the minimum fake node size from 64MB to 32MB so it is possible to test NUMA code at a greater scale on smaller machines (64 nodes on a 2G machine, 1024 nodes on 32G machine with CONFIG_NODES_SHIFT=10). Signed-off-by: David Rientjes <rientjes@google.com> LKML-Reference: <alpine.DEB.2.00.1012221700590.3701@chino.kir.corp.google.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
53 lines
1.5 KiB
C
53 lines
1.5 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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#ifdef CONFIG_NUMA_EMU
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#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
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#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
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#endif /* CONFIG_NUMA_EMU */
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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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