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mm/memblock.c: expose total reserved memory

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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/[email protected]
Signed-off-by: Srikar Dronamraju <[email protected]>
Suggested-by: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Mahesh Salgaonkar <[email protected]>
Cc: Hari Bathini <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Srikar Dronamraju 2016-10-07 16:59:18 -07:00 • committed by Linus Torvalds
commit 8907de5dc6
2 changed files with 6 additions and 0 deletions
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5
mm/memblock.c
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@ -1438,6 +1438,11 @@ phys_addr_t __init_memblock memblock_phys_mem_size(void)
return memblock.memory.total_size;
}
phys_addr_t __init_memblock memblock_reserved_size(void)
{
return memblock.reserved.total_size;
}
phys_addr_t __init memblock_mem_size(unsigned long limit_pfn)
{
unsigned long pages = 0;