This patch adds spinlock operations for IBM Power architecture.
Signed-off-by: Chao Zhu <chaozhu at linux.vnet.ibm.com>
---
.../common/include/arch/ppc_64/rte_spinlock.h | 73 ++++++++++++++++++++
1 files changed, 73 insertions(+), 0 deletions(-)
create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
b/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
new file mode 100644
index 0000000..ba028fe
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
@@ -0,0 +1,73 @@
+/*
+ * BSD LICENSE
+ *
+ * Copyright (C) IBM Corporation 2014.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of IBM Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _RTE_SPINLOCK_PPC_64_H_
+#define _RTE_SPINLOCK_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_common.h>
+#include "generic/rte_spinlock.h"
+
+/* Fixme: Use intrinsics to implement the spinlock on Power architecture */
+
+#ifndef RTE_FORCE_INTRINSICS
+
+static inline void
+rte_spinlock_lock(rte_spinlock_t *sl)
+{
+ while (__sync_lock_test_and_set(&sl->locked, 1))
+ while(sl->locked)
+ rte_pause();
+}
+
+static inline void
+rte_spinlock_unlock (rte_spinlock_t *sl)
+{
+ __sync_lock_release(&sl->locked);
+}
+
+static inline int
+rte_spinlock_trylock (rte_spinlock_t *sl)
+{
+ return (__sync_lock_test_and_set(&sl->locked,1) == 0);
+}
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_SPINLOCK_PPC_64_H_ */
--
1.7.1
