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author | Tony Lindgren <tony@atomide.com> | 2012-11-13 21:25:38 (GMT) |
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committer | Tony Lindgren <tony@atomide.com> | 2012-11-13 21:25:38 (GMT) |
commit | 89ab216b33ba9405880fd3d89531305a931bc70f (patch) | |
tree | 8f6428ce51ecaed6f6e1379c036dbe341eb71e34 /mm/memblock.c | |
parent | c9d501e5cb0238910337213e12a09127221c35d8 (diff) | |
parent | 46bf4a562207c5ebd24e1dde5e5ee326cd3d6b91 (diff) | |
download | linux-fsl-qoriq-89ab216b33ba9405880fd3d89531305a931bc70f.tar.xz |
Merge branch 'omap-for-v3.8/pm' into omap-for-v3.8/clock
Diffstat (limited to 'mm/memblock.c')
-rw-r--r-- | mm/memblock.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index 931eef1..6259055 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -930,6 +930,30 @@ int __init_memblock memblock_is_region_reserved(phys_addr_t base, phys_addr_t si return memblock_overlaps_region(&memblock.reserved, base, size) >= 0; } +void __init_memblock memblock_trim_memory(phys_addr_t align) +{ + int i; + phys_addr_t start, end, orig_start, orig_end; + struct memblock_type *mem = &memblock.memory; + + for (i = 0; i < mem->cnt; i++) { + orig_start = mem->regions[i].base; + orig_end = mem->regions[i].base + mem->regions[i].size; + start = round_up(orig_start, align); + end = round_down(orig_end, align); + + if (start == orig_start && end == orig_end) + continue; + + if (start < end) { + mem->regions[i].base = start; + mem->regions[i].size = end - start; + } else { + memblock_remove_region(mem, i); + i--; + } + } +} void __init_memblock memblock_set_current_limit(phys_addr_t limit) { |