[dpdk-dev] [PATCH v4 00/17] support multi-pthread per core
On Fri, Feb 6, 2015 at 10:47 AM, Olivier MATZ wrote: > Hi, > > On 02/02/2015 03:02 AM, Cunming Liang wrote: > > v4 changes: > > new patch fixing strnlen() invalid return in 32bit icc [03/17] > > update and add more comments on sched_yield() [16/17] > > > > v3 changes: > > new patch adding sched_yield() in rte_ring to avoid long spin [16/17] > > > > v2 changes: > > add '-' support for EAL option '--lcores' [02/17] > > > > The patch series contain the enhancements of EAL and fixes for libraries > > to run multi-pthreads(either EAL or non-EAL thread) per physical core. > > Two major changes list as below: > > - Extend the core affinity of each EAL thread to 1:n. > > Each lcore stands for a EAL thread rather than a logical core. > > The change adds new EAL option to allow static lcore to cpuset > assginment. > > Then a lcore(EAL thread) affinity to a cpuset, original 1:1 mapping is > the special case. > > - Fix the libraries to allow running on any non-EAL thread. > > It fix the gaps running libraries in non-EAL thread(dynamic created by > user). > > Each fix libraries take care the case of rte_lcore_id() >= > RTE_MAX_LCORE. > > Sorry if I missed something, but after reading the mailing list threads > about this subject, I cannot find an explanation about what problem > this series try to solve. > > Can you give some details about which use-case require to have multiple > pthreads per cpu? What are the advantage of doing so? > > Regards, > Olivier > http://dpdk.org/ml/archives/dev/2014-December/009838.html
[dpdk-dev] [PATCH v4 00/17] support multi-pthread per core
v4 changes: new patch fixing strnlen() invalid return in 32bit icc [03/17] update and add more comments on sched_yield() [16/17] v3 changes: new patch adding sched_yield() in rte_ring to avoid long spin [16/17] v2 changes: add '-' support for EAL option '--lcores' [02/17] The patch series contain the enhancements of EAL and fixes for libraries to run multi-pthreads(either EAL or non-EAL thread) per physical core. Two major changes list as below: - Extend the core affinity of each EAL thread to 1:n. Each lcore stands for a EAL thread rather than a logical core. The change adds new EAL option to allow static lcore to cpuset assginment. Then a lcore(EAL thread) affinity to a cpuset, original 1:1 mapping is the special case. - Fix the libraries to allow running on any non-EAL thread. It fix the gaps running libraries in non-EAL thread(dynamic created by user). Each fix libraries take care the case of rte_lcore_id() >= RTE_MAX_LCORE. Thanks a million for the comments from Konstantin, Bruce, Mirek and Stephen in RFC review. *** BLURB HERE *** Cunming Liang (17): eal: add cpuset into per EAL thread lcore_config eal: new eal option '--lcores' for cpu assignment eal: fix wrong strnlen() return value in 32bit icc eal: add support parsing socket_id from cpuset eal: new TLS definition and API declaration eal: add eal_common_thread.c for common thread API eal: add rte_gettid() to acquire unique system tid eal: apply affinity of EAL thread by assigned cpuset enic: fix re-define freebsd compile complain malloc: fix the issue of SOCKET_ID_ANY log: fix the gap to support non-EAL thread eal: set _lcore_id and _socket_id to (-1) by default eal: fix recursive spinlock in non-EAL thraed mempool: add support to non-EAL thread ring: add support to non-EAL thread ring: add sched_yield to avoid spin forever timer: add support to non-EAL thread lib/librte_eal/bsdapp/eal/Makefile | 1 + lib/librte_eal/bsdapp/eal/eal.c| 13 +- lib/librte_eal/bsdapp/eal/eal_lcore.c | 14 + lib/librte_eal/bsdapp/eal/eal_memory.c | 2 + lib/librte_eal/bsdapp/eal/eal_thread.c | 76 +++--- lib/librte_eal/common/eal_common_launch.c | 1 - lib/librte_eal/common/eal_common_log.c | 17 +- lib/librte_eal/common/eal_common_options.c | 302 - lib/librte_eal/common/eal_common_thread.c | 142 ++ lib/librte_eal/common/eal_options.h| 2 + lib/librte_eal/common/eal_thread.h | 66 + .../common/include/generic/rte_spinlock.h | 4 +- lib/librte_eal/common/include/rte_eal.h| 27 ++ lib/librte_eal/common/include/rte_lcore.h | 37 ++- lib/librte_eal/common/include/rte_log.h| 5 + lib/librte_eal/linuxapp/eal/Makefile | 4 + lib/librte_eal/linuxapp/eal/eal.c | 7 +- lib/librte_eal/linuxapp/eal/eal_lcore.c| 15 + lib/librte_eal/linuxapp/eal/eal_thread.c | 78 +++--- lib/librte_malloc/malloc_heap.h| 7 +- lib/librte_mempool/rte_mempool.h | 18 +- lib/librte_pmd_enic/enic.h | 1 + lib/librte_pmd_enic/enic_compat.h | 1 + lib/librte_ring/rte_ring.h | 45 ++- lib/librte_timer/rte_timer.c | 40 ++- lib/librte_timer/rte_timer.h | 2 +- 26 files changed, 789 insertions(+), 138 deletions(-) create mode 100644 lib/librte_eal/common/eal_common_thread.c -- 1.8.1.4
