diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2010-08-25 13:39:16 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-08-27 11:11:16 -0700 |
| commit | b52c17ce854125700c4e19d4427d39bf2504ff63 (patch) | |
| tree | 917bbfb7b1603b6deb7dee735d05071199d5ba51 /arch/x86/include/asm/memblock.h | |
| parent | 6bcc8176d07f108da3b1af17fb2c0e82c80e948e (diff) | |
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>
Diffstat (limited to 'arch/x86/include/asm/memblock.h')
| -rw-r--r-- | arch/x86/include/asm/memblock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/memblock.h b/arch/x86/include/asm/memblock.h index 3a86b10380f..fc3c230812e 100644 --- a/arch/x86/include/asm/memblock.h +++ b/arch/x86/include/asm/memblock.h @@ -15,5 +15,6 @@ void memblock_x86_register_active_regions(int nid, unsigned long start_pfn, unsigned long last_pfn); u64 memblock_x86_hole_size(u64 start, u64 end); u64 memblock_x86_find_in_range_node(int nid, u64 start, u64 end, u64 size, u64 align); +u64 memblock_x86_free_memory_in_range(u64 addr, u64 limit); #endif |