kernel/numa.c: Move logging out of numa.h

Moving these stub functions to a .c file means we can kill a sched.h
dependency on printk.h.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

include/linux/numa.h

 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LINUX_NUMA_H
 #define _LINUX_NUMA_H
+#include <linux/init.h>
 #include <linux/types.h>
 
 #ifdef CONFIG_NODES_SHIFT
@@ -22,34 +23,26 @@
 #endif
 
 #ifdef CONFIG_NUMA
-#include <linux/printk.h>
 #include <asm/sparsemem.h>
 
 /* Generic implementation available */
 int numa_nearest_node(int node, unsigned int state);
 
 #ifndef memory_add_physaddr_to_nid
-static inline int memory_add_physaddr_to_nid(u64 start)
-{
-	pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
-			start);
-	return 0;
-}
+int memory_add_physaddr_to_nid(u64 start);
 #endif
+
 #ifndef phys_to_target_node
-static inline int phys_to_target_node(u64 start)
-{
-	pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
-			start);
-	return 0;
-}
+int phys_to_target_node(u64 start);
 #endif
+
 #ifndef numa_fill_memblks
 static inline int __init numa_fill_memblks(u64 start, u64 end)
 {
 	return NUMA_NO_MEMBLK;
 }
 #endif
+
 #else /* !CONFIG_NUMA */
 static inline int numa_nearest_node(int node, unsigned int state)
 {

kernel/Makefile

@@ -114,6 +114,7 @@ obj-$(CONFIG_SHADOW_CALL_STACK) += scs.o
 obj-$(CONFIG_HAVE_STATIC_CALL) += static_call.o
 obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += static_call_inline.o
 obj-$(CONFIG_CFI_CLANG) += cfi.o
+obj-$(CONFIG_NUMA) += numa.o
 
 obj-$(CONFIG_PERF_EVENTS) += events/
 

kernel/numa.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/printk.h>
+#include <linux/numa.h>
+
+/* Stub functions: */
+
+#ifndef memory_add_physaddr_to_nid
+int memory_add_physaddr_to_nid(u64 start)
+{
+	pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
+			start);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
+#endif
+
+#ifndef phys_to_target_node
+int phys_to_target_node(u64 start)
+{
+	pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
+			start);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(phys_to_target_node);
+#endif