From: Yinghai Lu <yinghai@kernel.org>
Date: Wed, 25 Aug 2010 20:39:16 +0000 (-0700)
Subject: x86, memblock: Add memblock_x86_free_memory_in_range()
X-Git-Tag: v2.6.37-rc1~183^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b52c17ce854125700c4e19d4427d39bf2504ff63;p=pandora-kernel.git

x86, memblock: Add memblock_x86_free_memory_in_range()

It will return free memory size in specified range.

We can not use memory_size - reserved_size here, because some reserved area
may not be in the scope of memblock.memory.region.

Use memblock.memory.region subtracting memblock.reserved.region to get free range array.
then count size of all free ranges.

-v2: Ben insist on using _in_range

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---

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