mm: move numa_distance and related code from x86 to numa_memblks

Move code dealing with numa_distance array from arch/x86 to
mm/numa_memblks.c

This code will be later reused by arch_numa.

No functional changes.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Mike Rapoport (Microsoft) <[email protected]>
Tested-by: Zi Yan <[email protected]> # for x86_64 and arm64
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Cc: Alexander Gordeev <[email protected]>
Cc: Andreas Larsson <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiaxun Yang <[email protected]>
Cc: John Paul Adrian Glaubitz <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Rob Herring (Arm) <[email protected]>
Cc: Samuel Holland <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h
index 6981cf97d2c9..968a590535ac 100644
--- a/include/linux/numa_memblks.h
+++ b/include/linux/numa_memblks.h
@@ -7,6 +7,10 @@
 
 #define NR_NODE_MEMBLKS		(MAX_NUMNODES * 2)
 
+extern int numa_distance_cnt;
+void __init numa_set_distance(int from, int to, int distance);
+void __init numa_reset_distance(void);
+
 struct numa_memblk {
 	u64			start;
 	u64			end;