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Subject: [dpdk-dev] [PATCH v3 1/4] eal: Introduce new cache macro definitions
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- RTE_CACHE_MIN_LINE_SIZE(Supported minimum cache line size)
- __rte_cache_min_aligned(Force minimum cache line alignment)
- RTE_CACHE_LINE_SIZE_LOG2(Express cache line size in terms of log2)
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Suggested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
lib/librte_eal/common/include/rte_memory.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h
index 9c9e40f..b67a76f 100644
--- a/lib/librte_eal/common/include/rte_memory.h
+++ b/lib/librte_eal/common/include/rte_memory.h
@@ -77,11 +77,27 @@ enum rte_page_sizes {
(RTE_CACHE_LINE_SIZE * ((size + RTE_CACHE_LINE_SIZE - 1) / RTE_CACHE_LINE_SIZE))
/**< Return the first cache-aligned value greater or equal to size. */
+/**< Cache line size in terms of log2 */
+#if RTE_CACHE_LINE_SIZE == 64
+#define RTE_CACHE_LINE_SIZE_LOG2 6
+#elif RTE_CACHE_LINE_SIZE == 128
+#define RTE_CACHE_LINE_SIZE_LOG2 7
+#else
+#error "Unsupported cache line size"
+#endif
+
+#define RTE_CACHE_MIN_LINE_SIZE 64 /**< Minimum Cache line size. */
+
/**
* Force alignment to cache line.
*/
#define __rte_cache_aligned __rte_aligned(RTE_CACHE_LINE_SIZE)
+/**
+ * Force minimum cache line alignment.
+ */
+#define __rte_cache_min_aligned __rte_aligned(RTE_CACHE_MIN_LINE_SIZE)
+
typedef uint64_t phys_addr_t; /**< Physical address definition. */
#define RTE_BAD_PHYS_ADDR ((phys_addr_t)-1)
--
2.1.0