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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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1a27fc0a42
typical case: four sockets system, every node has 4g ram, and we are using: memmap=10g$4g to mask out memory on node1 and node2 when numa is enabled, early_node_mem is used to get node_data and node_bootmap. if it can not get memory from the same node with find_e820_area(), it will use alloc_bootmem to get buff from previous nodes. so check it and print out some info about it. need to move early_res_to_bootmem into every setup_node_bootmem. and it takes range that node has. otherwise alloc_bootmem could return addr that reserved early. depends on "mm: make reserve_bootmem can crossed the nodes". Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/*
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* structures and definitions for the int 15, ax=e820 memory map
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* scheme.
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*
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* In a nutshell, setup.S populates a scratch table in the
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* empty_zero_block that contains a list of usable address/size
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* duples. setup.c, this information is transferred into the e820map,
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* and in init.c/numa.c, that new information is used to mark pages
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* reserved or not.
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*/
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#ifndef __E820_HEADER
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#define __E820_HEADER
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#include <linux/ioport.h>
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#ifndef __ASSEMBLY__
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extern unsigned long find_e820_area(unsigned long start, unsigned long end,
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unsigned long size, unsigned long align);
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extern unsigned long find_e820_area_size(unsigned long start,
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unsigned long *sizep,
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unsigned long align);
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extern void add_memory_region(unsigned long start, unsigned long size,
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int type);
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extern void update_memory_range(u64 start, u64 size, unsigned old_type,
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unsigned new_type);
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extern void setup_memory_region(void);
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extern void contig_e820_setup(void);
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extern unsigned long e820_end_of_ram(void);
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extern void e820_reserve_resources(void);
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extern void e820_mark_nosave_regions(void);
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extern int e820_any_mapped(unsigned long start, unsigned long end,
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unsigned type);
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extern int e820_all_mapped(unsigned long start, unsigned long end,
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unsigned type);
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extern int e820_any_non_reserved(unsigned long start, unsigned long end);
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extern int is_memory_any_valid(unsigned long start, unsigned long end);
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extern int e820_all_non_reserved(unsigned long start, unsigned long end);
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extern int is_memory_all_valid(unsigned long start, unsigned long end);
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extern unsigned long e820_hole_size(unsigned long start, unsigned long end);
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extern void e820_setup_gap(void);
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extern void e820_register_active_regions(int nid, unsigned long start_pfn,
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unsigned long end_pfn);
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extern void finish_e820_parsing(void);
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extern struct e820map e820;
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extern void update_e820(void);
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extern void reserve_early(unsigned long start, unsigned long end, char *name);
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extern void free_early(unsigned long start, unsigned long end);
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extern void early_res_to_bootmem(unsigned long start, unsigned long end);
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#endif/*!__ASSEMBLY__*/
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#endif/*__E820_HEADER*/
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