kernel: move internal smp calls to a internal header

Those APIs are internal and should not be part of the main public API
header.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

include/zephyr/kernel.h

@@ -5947,14 +5947,6 @@ extern void z_init_static_threads(void);
 #define z_init_static_threads() do { } while (false)
 #endif
 
-/**
- * @internal
- */
-#ifdef CONFIG_SMP
-void z_smp_thread_init(void *arg, struct k_thread *thread);
-void z_smp_thread_swap(void);
-#endif
-
 /**
  * @internal
  */

include/zephyr/kernel/internal/smp.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2023 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef ZEPHYR_INCLUDE_KERNEL_INTERNAL_SMP_H_
+#define ZEPHYR_INCLUDE_KERNEL_INTERNAL_SMP_H_
+
+struct k_thread;
+
+/**
+ * @internal
+ */
+#ifdef CONFIG_SOF
+void z_smp_thread_init(void *arg, struct k_thread *thread);
+void z_smp_thread_swap(void);
+#endif
+
+#endif

include/zephyr/kernel_includes.h

@@ -45,5 +45,7 @@
 #include <zephyr/app_memory/mem_domain.h>
 #include <zephyr/sys/kobject.h>
 #include <zephyr/kernel/thread.h>
+/* FIXME This needs to be removed. Exposes some private APIs to SOF */
+#include <zephyr/kernel/internal/smp.h>
 
 #endif /* ZEPHYR_INCLUDE_KERNEL_INCLUDES_H_ */