commit 473f46135c3fd77dad5614215cc279b1164e9a74
author Dave Barach <dave@barachs.net> Tue May 29 17:06:45 2018 -0400
committer Florin Coras <florin.coras@gmail.com> Mon Jun 04 22:24:48 2018 +0000
tree c77881bd8157ce9380d91e94b43463f6c9f712a0
parent 1b25552ebb8f653d473bd58a3bf56499701c792d

Configure or deduce CLIB_LOG2_CACHE_LINE_BYTES (VPP-1064)

Added configure argument "--with-log2-cache-line-bytes=5|6|7|auto"
AKA 32, 64, or 128 bytes, or use the inferred value from the build host.

produces build-xxx/vpp/vppinfra/config.h, which .../src/vppinfra/cache.h

Kernels which implement the following pseudo-file (aka x86_64) are
easy: /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size

Otherwise, extract the cpuid from /proc/cpuinfo and map it to the
cache line size.

Change-Id: I7ff861e042faf82c3901fa1db98864fbdea95b74
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Nitin Saxena <nitin.saxena@cavium.com>

dpdk/Makefile

diff --git a/dpdk/Makefile b/dpdk/Makefile
index 331e1c3..7b70346 100644
--- a/dpdk/Makefile
+++ b/dpdk/Makefile
@@ -124,6 +124,7 @@
 	$(CPU_PART_CAVIUM_THUNDERX_81XX) $(CPU_PART_CAVIUM_THUNDERX_83XX)))
 DPDK_TARGET           = arm64-thunderx-linuxapp-$(DPDK_CC)
 DPDK_MACHINE          = thunderx
+DPDK_CACHE_LINE_SIZE := 128
 else
 $(warning Unknown Cavium CPU)
 endif