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From: Jia He <hejianet@gmail.com>
To: jerin.jacob@caviumnetworks.com, dev@dpdk.org, bruce.richardson@intel.com,
konstantin.ananyev@intel.com
Cc: olivier.matz@6wind.com, jianbo.liu@arm.com, hemant.agrawal@nxp.com,
Jia He <hejianet@gmail.com>
Date: Sun, 26 Nov 2017 18:00:21 -0800
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Subject: [dpdk-dev] [PATCH V6 0/3] support c11 memory model barrier in
librte_ring
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To support C11 memory model barrier, 2 options are suggested by Jerin:
1. use rte_smp_rmb
2. use load_acquire/store_release
CONFIG_RTE_RING_USE_C11_MEM_MODEL is provided, and by default it is "y"
only on arm64 so far.
The reason why providing 2 options is due to the performance benchmark
difference in different arm machines.
Already fuctionally tested on the machines as follows:
- on X86
- on arm64 with CONFIG_RTE_RING_USE_C11_MEM_MODEL=y
- on arm64 with CONFIG_RTE_RING_USE_C11_MEM_MODEL=n
---
Changelog:
V6: minor change in subject and log
V5: split it into 2 patchset due to the milestone concerns, this is the 2st
one. Also fix checkpatch.pl warnings
V4: split into small patches
V3: arch specific implementation for enqueue/dequeue barrier
V2: let users choose whether using load_acquire/store_release
V1: rte_smp_rmb() between 2 loads
Jia He (3):
eal/arm64: remove the braces {} for dmb(),dsb()
ring: introduce new header file to include common functions
ring: introduce new header file to support C11 memory model
config/common_armv8a_linuxapp | 2 +
.../common/include/arch/arm/rte_atomic_64.h | 4 +-
lib/librte_eventdev/rte_event_ring.h | 6 +-
lib/librte_ring/Makefile | 4 +-
lib/librte_ring/rte_ring.h | 173 ++----------------
lib/librte_ring/rte_ring_generic.h | 195 +++++++++++++++++++++
6 files changed, 220 insertions(+), 164 deletions(-)
create mode 100644 lib/librte_ring/rte_ring_generic.h
--
2.7.4