x86, memblock: Add memblock_x86_reserve_range/memblock_x86_free_range (9dc5d569) · Commits · 戴 / test

They are wrappers for core versions, which take start/end/name instead of base/size. This will make x86 conversion eaasier. could add more debug print out -v2: change get_max_mapped() to memblock.default_alloc_limit according to Michael Ellerman and Ben change to memblock_x86_reserve_range and memblock_x86_free_range according to Michael Ellerman -v3: call check_and_double after reserve/free, so could avoid to use find_memblock_area. Suggested by Michael Ellerman Signed-off-by:

Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by:

H. Peter Anvin <hpa@zytor.com>

arch/x86/include/asm/memblock.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -6,4 +6,7 @@
		u64 memblock_x86_find_in_range_size(u64 start, u64 *sizep, u64 align);
		void memblock_x86_to_bootmem(u64 start, u64 end);

		void memblock_x86_reserve_range(u64 start, u64 end, char *name);
		void memblock_x86_free_range(u64 start, u64 end);

		#endif

arch/x86/mm/memblock.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -114,3 +114,25 @@ void __init memblock_x86_to_bootmem(u64 start, u64 end)
		memblock_reserve_reserved_regions();
		}
		#endif

		void __init memblock_x86_reserve_range(u64 start, u64 end, char *name)
		{
		if (start == end)
		return;

		if (WARN_ONCE(start > end, "memblock_x86_reserve_range: wrong range [%#llx, %#llx]\n", start, end))
		return;

		memblock_reserve(start, end - start);
		}

		void __init memblock_x86_free_range(u64 start, u64 end)
		{
		if (start == end)
		return;

		if (WARN_ONCE(start > end, "memblock_x86_free_range: wrong range [%#llx, %#llx]\n", start, end))
		return;

		memblock_free(start, end - start);
		}

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