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x86: Move range related operation to one file

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We have almost the same code for mtrr cleanup and amd_bus checkup, and
this code  will also be used in replacing bootmem with early_res,
so try to move them together and reuse it from different parts.

Also rename update_range to subtract_range as that is what the
function is actually doing.

-v2: update comments as Christoph requested

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-4-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu 2010-02-10 01:20:07 -08:00 • committed by H. Peter Anvin
parent c85e4aae69
commit 27811d8cab
6 changed files with 214 additions and 230 deletions
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22
include/linux/range.h Normal file
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@ -0,0 +1,22 @@
#ifndef _LINUX_RANGE_H
#define _LINUX_RANGE_H
struct range {
u64 start;
u64 end;
};
int add_range(struct range *range, int az, int nr_range,
u64 start, u64 end);
int add_range_with_merge(struct range *range, int az, int nr_range,
u64 start, u64 end);
void subtract_range(struct range *range, int az, u64 start, u64 end);
int clean_sort_range(struct range *range, int az);
void sort_range(struct range *range, int nr_range);
#endif