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302616911d
x86 unconditionally uses NO_BOOTMEM so there is no use of the HAVE_ARCH_BOOTMEM support as mm/bootmem.c is the only file referencing this symbol. bootmem_arch_preferred_node() is the function referred in the mm/bootmem.c code and can thuis be dropped too. x86 was the sole user of HAVE_ARCH_BOOTMEM - so there is an opportunity to clean up a little in mm/bootmem.c too if we do not expect other users to emerge. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/20120406124735.GA6920@merkur.ravnborg.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/*
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* Written by Pat Gaughen (gone@us.ibm.com) Mar 2002
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*
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*/
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#ifndef _ASM_X86_MMZONE_32_H
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#define _ASM_X86_MMZONE_32_H
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#include <asm/smp.h>
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#ifdef CONFIG_NUMA
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extern struct pglist_data *node_data[];
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#define NODE_DATA(nid) (node_data[nid])
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#include <asm/numaq.h>
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extern void resume_map_numa_kva(pgd_t *pgd);
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#else /* !CONFIG_NUMA */
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static inline void resume_map_numa_kva(pgd_t *pgd) {}
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#endif /* CONFIG_NUMA */
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#ifdef CONFIG_DISCONTIGMEM
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/*
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* generic node memory support, the following assumptions apply:
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*
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* 1) memory comes in 64Mb contiguous chunks which are either present or not
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* 2) we will not have more than 64Gb in total
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*
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* for now assume that 64Gb is max amount of RAM for whole system
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* 64Gb / 4096bytes/page = 16777216 pages
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*/
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#define MAX_NR_PAGES 16777216
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#define MAX_SECTIONS 1024
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#define PAGES_PER_SECTION (MAX_NR_PAGES/MAX_SECTIONS)
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extern s8 physnode_map[];
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static inline int pfn_to_nid(unsigned long pfn)
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{
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#ifdef CONFIG_NUMA
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return((int) physnode_map[(pfn) / PAGES_PER_SECTION]);
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#else
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return 0;
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#endif
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}
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static inline int pfn_valid(int pfn)
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{
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int nid = pfn_to_nid(pfn);
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if (nid >= 0)
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return (pfn < node_end_pfn(nid));
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return 0;
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}
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#define early_pfn_valid(pfn) pfn_valid((pfn))
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#endif /* CONFIG_DISCONTIGMEM */
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#endif /* _ASM_X86_MMZONE_32_H */
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