mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 01:00:58 +07:00
4bc277ac9c
This reworks much of the bootmem setup and initialization code allowing us to get rid of duplicate work between the NUMA and non-NUMA cases. The end result is that we end up with a much more flexible interface for supporting more complex topologies (fake NUMA, highmem, etc, etc.) which is entirely LMB backed. This is an incremental step for more NUMA work as well as gradually enabling migration off of bootmem entirely. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#ifndef __ASM_SH_MMZONE_H
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#define __ASM_SH_MMZONE_H
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#ifdef __KERNEL__
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#ifdef CONFIG_NEED_MULTIPLE_NODES
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#include <linux/numa.h>
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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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#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
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#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
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NODE_DATA(nid)->node_spanned_pages)
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static inline int pfn_to_nid(unsigned long pfn)
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{
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int nid;
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for (nid = 0; nid < MAX_NUMNODES; nid++)
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if (pfn >= node_start_pfn(nid) && pfn <= node_end_pfn(nid))
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break;
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return nid;
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}
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static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
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{
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return NODE_DATA(pfn_to_nid(pfn));
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}
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/* arch/sh/mm/numa.c */
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void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end);
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#else
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static inline void
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setup_bootmem_node(int nid, unsigned long start, unsigned long end)
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{
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}
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#endif /* CONFIG_NEED_MULTIPLE_NODES */
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/* Platform specific mem init */
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void __init plat_mem_setup(void);
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/* arch/sh/kernel/setup.c */
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void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
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unsigned long end_pfn);
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/* arch/sh/mm/init.c */
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void __init allocate_pgdat(unsigned int nid);
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#endif /* __KERNEL__ */
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#endif /* __ASM_SH_MMZONE_H */
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