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mm/memblock.c: expose total reserved memory
The total reserved memory in a system is accounted but not available for use use outside mm/memblock.c. By exposing the total reserved memory, systems can better calculate the size of large hashes. Link: http://lkml.kernel.org/r/1472476010-4709-3-git-send-email-srikar@linux.vnet.ibm.com Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Suggested-by: Mel Gorman <mgorman@techsingularity.net> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Cc: Hari Bathini <hbathini@linux.vnet.ibm.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -328,6 +328,7 @@ phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
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phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
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phys_addr_t max_addr);
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phys_addr_t memblock_phys_mem_size(void);
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phys_addr_t memblock_reserved_size(void);
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phys_addr_t memblock_mem_size(unsigned long limit_pfn);
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phys_addr_t memblock_start_of_DRAM(void);
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phys_addr_t memblock_end_of_DRAM(void);
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@ -1438,6 +1438,11 @@ phys_addr_t __init_memblock memblock_phys_mem_size(void)
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return memblock.memory.total_size;
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}
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phys_addr_t __init_memblock memblock_reserved_size(void)
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{
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return memblock.reserved.total_size;
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}
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phys_addr_t __init memblock_mem_size(unsigned long limit_pfn)
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{
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unsigned long pages = 0;
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