1 files changed, 63 insertions, 0 deletions
diff --git a/platform/linux-generic/include/odp/api/plat/spinlock_inlines.h b/platform/linux-generic/include/odp/api/plat/spinlock_inlines.h
new file mode 100644
index 000000000..6a07350de
--- /dev/null
+++ b/platform/linux-generic/include/odp/api/plat/spinlock_inlines.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2013-2018 Linaro Limited
+ * Copyright (c) 2022 Nokia
+ */
+
+#ifndef ODP_PLAT_SPINLOCK_INLINES_H_
+#define ODP_PLAT_SPINLOCK_INLINES_H_
+
+#include <odp/api/cpu.h>
+
+#include <odp/api/abi/spinlock.h>
+
+/** @cond _ODP_HIDE_FROM_DOXYGEN_ */
+
+#ifndef _ODP_NO_INLINE
+	/* Inline functions by default */
+	#define _ODP_INLINE static inline
+	#define odp_spinlock_init __odp_spinlock_init
+	#define odp_spinlock_lock __odp_spinlock_lock
+	#define odp_spinlock_trylock __odp_spinlock_trylock
+	#define odp_spinlock_unlock __odp_spinlock_unlock
+	#define odp_spinlock_is_locked __odp_spinlock_is_locked
+
+	#include <odp/api/plat/cpu_inlines.h>
+#else
+	#undef _ODP_INLINE
+	#define _ODP_INLINE
+#endif
+
+_ODP_INLINE void odp_spinlock_init(odp_spinlock_t *spinlock)
+{
+	__atomic_clear(&spinlock->lock, __ATOMIC_RELAXED);
+}
+
+_ODP_INLINE void odp_spinlock_lock(odp_spinlock_t *spinlock)
+{
+	/* While the lock is already taken... */
+	while (__atomic_test_and_set(&spinlock->lock, __ATOMIC_ACQUIRE))
+		/* ...spin reading the flag (relaxed MM),
+		 * the loop will exit when the lock becomes available
+		 * and we will retry the TAS operation above */
+		while (__atomic_load_n(&spinlock->lock, __ATOMIC_RELAXED))
+			odp_cpu_pause();
+}
+
+_ODP_INLINE int odp_spinlock_trylock(odp_spinlock_t *spinlock)
+{
+	return (__atomic_test_and_set(&spinlock->lock, __ATOMIC_ACQUIRE) == 0);
+}
+
+_ODP_INLINE void odp_spinlock_unlock(odp_spinlock_t *spinlock)
+{
+	__atomic_clear(&spinlock->lock, __ATOMIC_RELEASE);
+}
+
+_ODP_INLINE int odp_spinlock_is_locked(odp_spinlock_t *spinlock)
+{
+	return __atomic_load_n(&spinlock->lock, __ATOMIC_RELAXED) != 0;
+}
+
+/** @endcond */
+
+#endif