spelling fixes

[dpdk.git] / lib / librte_eal / common / include / rte_atomic.h

diff --git a/lib/librte_eal/common/include/rte_atomic.h b/lib/librte_eal/common/include/rte_atomic.h
index 967e8a2..ef95160 100644 (file)
--- a/lib/librte_eal/common/include/rte_atomic.h
+++ b/lib/librte_eal/common/include/rte_atomic.h
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
  *   Redistribution and use in source and binary forms, with or without
@@ -81,6 +81,16 @@ extern "C" {
  */
 #define        rte_rmb() _mm_lfence()
 
+/**
+ * Compiler barrier.
+ *
+ * Guarantees that operation reordering does not occur at compile time 
+ * for operations directly before and after the barrier.
+ */
+#define        rte_compiler_barrier() do {             \
+       asm volatile ("" : : : "memory");       \
+} while(0)
+
 #include <emmintrin.h>
 
 /**
@@ -985,7 +995,7 @@ rte_atomic64_add(rte_atomic64_t *v, int64_t inc)
  * @param v
  *   A pointer to the atomic counter.
  * @param dec
- *   The value to be substracted from the counter.
+ *   The value to be subtracted from the counter.
  */
 static inline void
 rte_atomic64_sub(rte_atomic64_t *v, int64_t dec)
@@ -1040,14 +1050,14 @@ rte_atomic64_add_return(rte_atomic64_t *v, int64_t inc)
  * Subtract a 64-bit value from an atomic counter and return the result.
  *
  * Atomically subtracts the 64-bit value (dec) from the atomic counter (v)
- * and returns the value of v after the substraction.
+ * and returns the value of v after the subtraction.
  *
  * @param v
  *   A pointer to the atomic counter.
  * @param dec
- *   The value to be substracted from the counter.
+ *   The value to be subtracted from the counter.
  * @return
- *   The value of v after the substraction.
+ *   The value of v after the subtraction.
  */
 static inline int64_t
 rte_atomic64_sub_return(rte_atomic64_t *v, int64_t dec)
@@ -1080,7 +1090,7 @@ static inline int rte_atomic64_inc_and_test(rte_atomic64_t *v)
  * @param v
  *   A pointer to the atomic counter.
  * @return
- *   True if the result after substraction is 0; false otherwise.
+ *   True if the result after subtraction is 0; false otherwise.
  */
 static inline int rte_atomic64_dec_and_test(rte_atomic64_t *v)
 {