[dpdk-dev] add support for HTM lock elision for x86
Roman Dementiev
roman.dementiev at intel.com
Tue Jun 2 15:11:30 CEST 2015
This series of patches adds methods that use hardware memory transactions (HTM)
on fast-path for DPDK locks (a.k.a. lock elision). Here the methods are implemented
for x86 using Restricted Transactional Memory instructions (Intel(r) Transactional
Synchronization Extensions). The implementation fall-backs to the normal DPDK lock
if HTM is not available or memory transactions fail.
This is not a replacement for lock usages since not all critical sections protected
by locks are friendly to HTM.
Roman Dementiev (3):
spinlock: add support for HTM lock elision for x86
rwlock: add support for HTM lock elision for x86
test scaling of HTM lock elision protecting rte_hash
app/test/Makefile | 1 +
app/test/test_hash_scaling.c | 223 +++++++++++++++++++++
lib/librte_eal/common/Makefile | 4 +-
.../common/include/arch/ppc_64/rte_rwlock.h | 38 ++++
.../common/include/arch/ppc_64/rte_spinlock.h | 41 ++++
lib/librte_eal/common/include/arch/x86/rte_rtm.h | 73 +++++++
.../common/include/arch/x86/rte_rwlock.h | 82 ++++++++
.../common/include/arch/x86/rte_spinlock.h | 107 ++++++++++
lib/librte_eal/common/include/generic/rte_rwlock.h | 194 ++++++++++++++++++
.../common/include/generic/rte_spinlock.h | 75 +++++++
lib/librte_eal/common/include/rte_rwlock.h | 158 ---------------
11 files changed, 836 insertions(+), 160 deletions(-)
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