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https://github.com/torvalds/linux
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4697bdcc94
With all memory configuration information now carried in numa_meminfo, there's no need to keep mem_nodes_parsed separate. Drop it and use numa_nodes_parsed for CPU / memory-less nodes. A new helper numa_nodemask_from_meminfo() is added to calculate memnode mask on the fly which is currently used to set node_possible_map. This simplifies NUMA init methods a bit and removes a source of possible inconsistencies. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shaohui Zheng <shaohui.zheng@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@linux.intel.com>
43 lines
1.1 KiB
C
43 lines
1.1 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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struct bootnode {
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u64 start;
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u64 end;
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};
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#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
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extern int numa_off;
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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 nodemask_t numa_nodes_parsed __initdata;
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extern int __cpuinit numa_cpu_node(int cpu);
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extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
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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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void numa_emu_cmdline(char *);
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int __init find_node_by_addr(unsigned long addr);
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#endif /* CONFIG_NUMA_EMU */
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#else
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static inline int numa_cpu_node(int cpu) { return NUMA_NO_NODE; }
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#endif
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#endif /* _ASM_X86_NUMA_64_H */
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