Commit 3a9c2c81 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

memblock: Make memblock_find_region() out of memblock_alloc_region() 



This function will be used to locate a free area to put the new memblock
arrays when attempting to resize them. memblock_alloc_region() is gone,
the two callsites now call memblock_add_region().

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix membase_alloc_nid_region() conversion
parent 449e8df3

mm/memblock.c

+9 −11
Original line number Diff line number Diff line
@@ -309,7 +309,7 @@ static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size) 
	return (addr + (size - 1)) & ~(size - 1);

}



static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,

static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,

					  phys_addr_t size, phys_addr_t align)

{

	phys_addr_t base, res_base;
@@ -318,12 +318,8 @@ static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t e 
	base = memblock_align_down((end - size), align);

	while (start <= base) {

		j = memblock_overlaps_region(&memblock.reserved, base, size);

		if (j < 0) {

			/* this area isn't reserved, take it */

			if (memblock_add_region(&memblock.reserved, base, size) < 0)

				base = ~(phys_addr_t)0;

		if (j < 0)

			return base;

		}

		res_base = memblock.reserved.regions[j].base;

		if (res_base < size)

			break;
@@ -356,8 +352,9 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp, 


		this_end = memblock_nid_range(start, end, &this_nid);

		if (this_nid == nid) {

			phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);

			if (ret != ~(phys_addr_t)0)

			phys_addr_t ret = memblock_find_region(start, this_end, size, align);

			if (ret != ~(phys_addr_t)0 &&

			    memblock_add_region(&memblock.reserved, ret, size) >= 0)

				return ret;

		}

		start = this_end;
@@ -432,8 +429,9 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph 
		if (memblocksize < size)

			continue;

		base = min(memblockbase + memblocksize, max_addr);

		res_base = memblock_alloc_region(memblockbase, base, size, align);

		if (res_base != ~(phys_addr_t)0)

		res_base = memblock_find_region(memblockbase, base, size, align);

		if (res_base != ~(phys_addr_t)0 &&

		    memblock_add_region(&memblock.reserved, res_base, size) >= 0)

			return res_base;

	}

	return 0;

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