mm: numa_memblks: make several functions and variables static

Make functions and variables that are exclusively used by numa_memblks
static.

Move numa_nodemask_from_meminfo() before its callers to avoid forward
declaration.

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]>

include/linux/numa_memblks.h

@@ -7,7 +7,6 @@
 
 #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);
 
@@ -22,17 +21,10 @@ struct numa_meminfo {
 	struct numa_memblk	blk[NR_NODE_MEMBLKS];
 };
 
-extern struct numa_meminfo numa_meminfo __initdata_or_meminfo;
-extern struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo;
-
 int __init numa_add_memblk(int nodeid, u64 start, u64 end);
 void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi);
 
 int __init numa_cleanup_meminfo(struct numa_meminfo *mi);
-int __init numa_register_meminfo(struct numa_meminfo *mi);
-
-void __init numa_nodemask_from_meminfo(nodemask_t *nodemask,
-				       const struct numa_meminfo *mi);
 
 int __init numa_memblks_init(int (*init_func)(void),
 			     bool memblock_force_top_down);

mm/numa_memblks.c

@@ -7,13 +7,27 @@
 #include <linux/numa.h>
 #include <linux/numa_memblks.h>
 
-int numa_distance_cnt;
+static int numa_distance_cnt;
 static u8 *numa_distance;
 
 nodemask_t numa_nodes_parsed __initdata;
 
-struct numa_meminfo numa_meminfo __initdata_or_meminfo;
-struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo;
+static struct numa_meminfo numa_meminfo __initdata_or_meminfo;
+static struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo;
+
+/*
+ * Set nodes, which have memory in @mi, in *@nodemask.
+ */
+static void __init numa_nodemask_from_meminfo(nodemask_t *nodemask,
+					      const struct numa_meminfo *mi)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mi->blk); i++)
+		if (mi->blk[i].start != mi->blk[i].end &&
+		    mi->blk[i].nid != NUMA_NO_NODE)
+			node_set(mi->blk[i].nid, *nodemask);
+}
 
 /**
  * numa_reset_distance - Reset NUMA distance table
@@ -290,20 +304,6 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
 	return 0;
 }
 
-/*
- * Set nodes, which have memory in @mi, in *@nodemask.
- */
-void __init numa_nodemask_from_meminfo(nodemask_t *nodemask,
-				       const struct numa_meminfo *mi)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(mi->blk); i++)
-		if (mi->blk[i].start != mi->blk[i].end &&
-		    mi->blk[i].nid != NUMA_NO_NODE)
-			node_set(mi->blk[i].nid, *nodemask);
-}
-
 /*
  * Mark all currently memblock-reserved physical memory (which covers the
  * kernel's own memory ranges) as hot-unswappable.
@@ -371,7 +371,7 @@ static void __init numa_clear_kernel_node_hotplug(void)
 	}
 }
 
-int __init numa_register_meminfo(struct numa_meminfo *mi)
+static int __init numa_register_meminfo(struct numa_meminfo *mi)
 {
 	int i;