cpu/mips32r2_common: Inline thread_yield_higher function

cpu/mips32r2_common/include/thread_arch.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright(C) 2017, 2016, Imagination Technologies Limited and/or its
+ *                 affiliated group companies.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License v2.1. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @ingroup     cpu_mips32r2_common
+ * @{
+ *
+ * @file
+ * @brief       Implementation of the kernels thread interface
+ *
+ * @author      Neil Jones <neil.jones@imgtec.com>
+ *
+ * @}
+ */
+#ifndef THREAD_ARCH_H
+#define THREAD_ARCH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define THREAD_API_INLINED
+
+#ifndef DOXYGEN /* Doxygen is in core/include/thread.h */
+
+static inline __attribute__((always_inline)) void thread_yield_higher(void)
+{
+    /*
+     * throw a syscall exception to get into exception level
+     * we context switch at exception level.
+     *
+     * Note syscall 1 is reserved for UHI see:
+     * http://wiki.prplfoundation.org/w/images/4/42/UHI_Reference_Manual.pdf
+     */
+    __asm volatile ("syscall 2");
+}
+
+#endif /* DOXYGEN */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* THREAD_ARCH_H */
+/** @} */

cpu/mips32r2_common/thread_arch.c

@@ -141,18 +141,6 @@ void cpu_switch_context_exit(void)
     UNREACHABLE();
 }
 
-void thread_yield_higher(void)
-{
-    /*
-     * throw a syscall exception to get into exception level
-     * we context switch at exception level.
-     *
-     * Note syscall 1 is reserved for UHI see:
-     * http://wiki.prplfoundation.org/w/images/4/42/UHI_Reference_Manual.pdf
-     */
-    __asm volatile ("syscall 2");
-}
-
 struct linkctx* exctx_find(reg_t id, struct gpctx *gp)
 {
     struct linkctx **ctx = (struct linkctx **)&gp->link;