From 0b01a999bec958b6d44f7664dbe16f98b20c1740 Mon Sep 17 00:00:00 2001
From: Koen Zandberg <koen@bergzand.net>
Date: Mon, 18 Jan 2021 17:09:36 +0100
Subject: [PATCH] cpu/mips32r2_common: Inline thread_yield_higher function

---
 cpu/mips32r2_common/include/thread_arch.h | 51 +++++++++++++++++++++++
 cpu/mips32r2_common/thread_arch.c         | 12 ------
 2 files changed, 51 insertions(+), 12 deletions(-)
 create mode 100644 cpu/mips32r2_common/include/thread_arch.h

diff --git a/cpu/mips32r2_common/include/thread_arch.h b/cpu/mips32r2_common/include/thread_arch.h
new file mode 100644
index 0000000000..00799085ca
--- /dev/null
+++ b/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 */
+/** @} */
diff --git a/cpu/mips32r2_common/thread_arch.c b/cpu/mips32r2_common/thread_arch.c
index 449ce1e203..b574462fc1 100644
--- a/cpu/mips32r2_common/thread_arch.c
+++ b/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;