[dpdk-dev] [PATCH] config: cleanup existing RTE_CACHE_LINE_SIZE selection scheme

[Jerin Jacob]

by default, all the targets will be configured with the 64-byte cache line
size, targets which have different cache line size can be overridden
through target specific config file.

Selected ThunderX and power8 as CONFIG_RTE_CACHE_LINE_SIZE=128 targets
based on existing configuration.

Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
 config/common_bsdapp                                          | 5 +++++
 config/common_linuxapp                                        | 6 +++++-
 config/defconfig_arm64-armv8a-linuxapp-gcc                    | 2 --
 config/defconfig_ppc_64-power8-linuxapp-gcc                   | 2 ++
 lib/librte_eal/common/include/rte_memory.h                    | 3 ---
 lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h | 4 ----
 mk/arch/arm/rte.vars.mk                                       | 2 +-
 mk/arch/ppc_64/rte.vars.mk                                    | 2 +-
 mk/machine/armv8a/rte.vars.mk                                 | 2 +-
 mk/machine/thunderx/rte.vars.mk                               | 2 +-
 mk/machine/xgene1/rte.vars.mk                                 | 2 +-
 11 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/config/common_bsdapp b/config/common_bsdapp
index 3286481..5dbcc33 100644
--- a/config/common_bsdapp
+++ b/config/common_bsdapp
@@ -94,6 +94,11 @@ CONFIG_RTE_BUILD_COMBINE_LIBS=n
 CONFIG_RTE_NEXT_ABI=y
 
 #
+# Machine's cache line size
+#
+CONFIG_RTE_CACHE_LINE_SIZE=64
+
+#
 # Compile Environment Abstraction Layer
 #
 CONFIG_RTE_LIBRTE_EAL=y
diff --git a/config/common_linuxapp b/config/common_linuxapp
index 2866986..54168be 100644
--- a/config/common_linuxapp
+++ b/config/common_linuxapp
@@ -94,6 +94,11 @@ CONFIG_RTE_BUILD_COMBINE_LIBS=n
 CONFIG_RTE_NEXT_ABI=y
 
 #
+# Machine's cache line size
+#
+CONFIG_RTE_CACHE_LINE_SIZE=64
+
+#
 # Compile Environment Abstraction Layer
 #
 CONFIG_RTE_LIBRTE_EAL=y
@@ -110,7 +115,6 @@ CONFIG_RTE_EAL_ALWAYS_PANIC_ON_ERROR=n
 CONFIG_RTE_EAL_IGB_UIO=y
 CONFIG_RTE_EAL_VFIO=y
 CONFIG_RTE_MALLOC_DEBUG=n
-
 # Default driver path (or "" to disable)
 CONFIG_RTE_EAL_PMD_PATH=""
 
diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc b/config/defconfig_arm64-armv8a-linuxapp-gcc
index 57f7941..52e0c97 100644
--- a/config/defconfig_arm64-armv8a-linuxapp-gcc
+++ b/config/defconfig_arm64-armv8a-linuxapp-gcc
@@ -43,8 +43,6 @@ CONFIG_RTE_FORCE_INTRINSICS=y
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
 
-CONFIG_RTE_CACHE_LINE_SIZE=64
-
 CONFIG_RTE_IXGBE_INC_VECTOR=n
 CONFIG_RTE_LIBRTE_VIRTIO_PMD=n
 CONFIG_RTE_LIBRTE_IVSHMEM=n
diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 03760c4..a80a19e 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -36,6 +36,8 @@ CONFIG_RTE_ARCH="ppc_64"
 CONFIG_RTE_ARCH_PPC_64=y
 CONFIG_RTE_ARCH_64=y
 
+CONFIG_RTE_CACHE_LINE_SIZE=128
+
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
 
diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h
index 33f5a77..b697c90 100644
--- a/lib/librte_eal/common/include/rte_memory.h
+++ b/lib/librte_eal/common/include/rte_memory.h
@@ -68,9 +68,6 @@ enum rte_page_sizes {
 };
 
 #define SOCKET_ID_ANY -1                    /**< Any NUMA socket. */
-#ifndef RTE_CACHE_LINE_SIZE
-#define RTE_CACHE_LINE_SIZE 64                  /**< Cache line size. */
-#endif
 #define RTE_CACHE_LINE_MASK (RTE_CACHE_LINE_SIZE-1) /**< Cache line mask. */
 
 #define RTE_CACHE_LINE_ROUNDUP(size) \
diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
index e724af7..cfd142a 100644
--- a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
+++ b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
@@ -68,10 +68,6 @@
  */
 #define RTE_KNI_NAMESIZE 32
 
-#ifndef RTE_CACHE_LINE_SIZE
-#define RTE_CACHE_LINE_SIZE 64       /**< Cache line size. */
-#endif
-
 /*
  * Request id.
  */
diff --git a/mk/arch/arm/rte.vars.mk b/mk/arch/arm/rte.vars.mk
index df0c043..bd85140 100644
--- a/mk/arch/arm/rte.vars.mk
+++ b/mk/arch/arm/rte.vars.mk
@@ -32,7 +32,7 @@
 ARCH  ?= arm
 CROSS ?=
 
-CPU_CFLAGS  ?= -marm -DRTE_CACHE_LINE_SIZE=64 -munaligned-access
+CPU_CFLAGS  ?= -marm -munaligned-access
 CPU_LDFLAGS ?=
 CPU_ASFLAGS ?= -felf
 
diff --git a/mk/arch/ppc_64/rte.vars.mk b/mk/arch/ppc_64/rte.vars.mk
index fdba019..363fcd1 100644
--- a/mk/arch/ppc_64/rte.vars.mk
+++ b/mk/arch/ppc_64/rte.vars.mk
@@ -32,7 +32,7 @@
 ARCH  ?= powerpc
 CROSS ?=
 
-CPU_CFLAGS  ?= -m64 -DRTE_CACHE_LINE_SIZE=128
+CPU_CFLAGS  ?= -m64
 CPU_LDFLAGS ?=
 CPU_ASFLAGS ?= -felf64
 
diff --git a/mk/machine/armv8a/rte.vars.mk b/mk/machine/armv8a/rte.vars.mk
index 8c018a4..d5049e1 100644
--- a/mk/machine/armv8a/rte.vars.mk
+++ b/mk/machine/armv8a/rte.vars.mk
@@ -55,4 +55,4 @@
 # CPU_LDFLAGS =
 # CPU_ASFLAGS =
 
-MACHINE_CFLAGS += -march=armv8-a+crc -DRTE_CACHE_LINE_SIZE=64
+MACHINE_CFLAGS += -march=armv8-a+crc
diff --git a/mk/machine/thunderx/rte.vars.mk b/mk/machine/thunderx/rte.vars.mk
index 0bb6b3d..81da1b4 100644
--- a/mk/machine/thunderx/rte.vars.mk
+++ b/mk/machine/thunderx/rte.vars.mk
@@ -55,4 +55,4 @@ CROSS ?= aarch64-thunderx-linux-gnu-
 # CPU_LDFLAGS =
 # CPU_ASFLAGS =
 
-MACHINE_CFLAGS += -march=armv8-a+crc -mcpu=thunderx -DRTE_CACHE_LINE_SIZE=128
+MACHINE_CFLAGS += -march=armv8-a+crc -mcpu=thunderx
diff --git a/mk/machine/xgene1/rte.vars.mk b/mk/machine/xgene1/rte.vars.mk
index bdf8c6b..419c234 100644
--- a/mk/machine/xgene1/rte.vars.mk
+++ b/mk/machine/xgene1/rte.vars.mk
@@ -55,4 +55,4 @@
 # CPU_LDFLAGS =
 # CPU_ASFLAGS =
 
-MACHINE_CFLAGS += -march=armv8-a -DRTE_CACHE_LINE_SIZE=64
+MACHINE_CFLAGS += -march=armv8-a
-- 
2.1.0