[dpdk-dev] [PATCH 10/12] Add cache size define for IBM Power Architecture

[Chao Zhu]

IBM Power architecture has different cache line size (128 bytes) than
x86 (64 bytes). This patch defines CACHE_LINE_SIZE to 128 bytes to
override the default value 64 bytes to support IBM Power Architecture.

Signed-off-by: Chao Zhu <bjzhuc at cn.ibm.com>
---
 app/test/test_malloc.c      |    8 ++++----
 app/test/test_mbuf.c        |    2 +-
 mk/arch/powerpc/rte.vars.mk |    2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/app/test/test_malloc.c b/app/test/test_malloc.c
index ee34ca3..63e6b32 100644
--- a/app/test/test_malloc.c
+++ b/app/test/test_malloc.c
@@ -300,9 +300,9 @@ test_big_alloc(void)
 	size_t size =rte_str_to_size(MALLOC_MEMZONE_SIZE)*2;
 	int align = 0;
 #ifndef RTE_LIBRTE_MALLOC_DEBUG
-	int overhead = 64 + 64;
+	int overhead = CACHE_LINE_SIZE + CACHE_LINE_SIZE;
 #else
-	int overhead = 64 + 64 + 64;
+	int overhead = CACHE_LINE_SIZE + CACHE_LINE_SIZE + CACHE_LINE_SIZE;
 #endif
 
 	rte_malloc_get_socket_stats(socket, &pre_stats);
@@ -356,9 +356,9 @@ test_multi_alloc_statistics(void)
 #ifndef RTE_LIBRTE_MALLOC_DEBUG
 	int trailer_size = 0;
 #else
-	int trailer_size = 64;
+	int trailer_size = CACHE_LINE_SIZE;
 #endif
-	int overhead = 64 + trailer_size;
+	int overhead = CACHE_LINE_SIZE + trailer_size;
 
 	rte_malloc_get_socket_stats(socket, &pre_stats);
 
diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 21024e7..03da329 100644
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -832,7 +832,7 @@ test_failing_mbuf_sanity_check(void)
 static int
 test_mbuf(void)
 {
-	RTE_BUILD_BUG_ON(sizeof(struct rte_mbuf) != 64);
+	RTE_BUILD_BUG_ON(sizeof(struct rte_mbuf) != CACHE_LINE_SIZE);
 
 	/* create pktmbuf pool if it does not exist */
 	if (pktmbuf_pool == NULL) {
diff --git a/mk/arch/powerpc/rte.vars.mk b/mk/arch/powerpc/rte.vars.mk
index 363fcd1..dfdeaea 100644
--- a/mk/arch/powerpc/rte.vars.mk
+++ b/mk/arch/powerpc/rte.vars.mk
@@ -32,7 +32,7 @@
 ARCH  ?= powerpc
 CROSS ?=
 
-CPU_CFLAGS  ?= -m64
+CPU_CFLAGS  ?= -m64 -DCACHE_LINE_SIZE=128
 CPU_LDFLAGS ?=
 CPU_ASFLAGS ?= -felf64
 
-- 
1.7.1