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memblock: Make memblock_find_region() out of memblock_alloc_region()

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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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix membase_alloc_nid_region() conversion
This commit is contained in:
Benjamin Herrenschmidt 2010-07-12 13:28:15 +10:00
parent 449e8df39d
commit 3a9c2c81eb
1 changed files with 9 additions and 11 deletions
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20
mm/memblock.c
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@ -309,8 +309,8 @@ 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,
phys_addr_t size, phys_addr_t align)
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;
long j;
@ -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;