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From: Bruce Richardson <bruce.richardson@intel.com>
To: Gavin Hu <gavin.hu@arm.com>
Cc: dev@dpdk.org, nd@arm.com, thomas@monjalon.net,
	jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com,
	Honnappa.Nagarahalli@arm.com, stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2 2/2] hash: flush the rings instead of dequeuing one by one
Date: Wed, 12 Dec 2018 03:15:59 -0700
Message-ID: <20181212101558.GB28296@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20181212064733.1008-3-gavin.hu@arm.com>

On Wed, Dec 12, 2018 at 02:47:33PM +0800, Gavin Hu wrote:
> Within rte_hash_reset, calling a while loop to dequeue one by
> one from the ring, while not using them at all, is wasting cycles,
> The patch just flush the ring by resetting the indices can save cpu
> cycles.
> 
> Fixes: b26473ff8f4a ("hash: add reset function")
> Fixes: 75706568a7eb ("hash: add extendable bucket feature")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Gavin Hu <gavin.hu@arm.com>
> Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
> ---
>  lib/librte_hash/Makefile          |  2 +-
>  lib/librte_hash/rte_cuckoo_hash.c | 11 ++++-------
>  2 files changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/lib/librte_hash/Makefile b/lib/librte_hash/Makefile
> index c8c435dfd..5669d83f4 100644
> --- a/lib/librte_hash/Makefile
> +++ b/lib/librte_hash/Makefile
> @@ -6,7 +6,7 @@ include $(RTE_SDK)/mk/rte.vars.mk
>  # library name
>  LIB = librte_hash.a
>  
> -CFLAGS += -O3
> +CFLAGS += -O3 -DALLOW_EXPERIMENTAL_API
>  CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
>  LDLIBS += -lrte_eal -lrte_ring
>  
Is a similar change needed to meson.build?

  reply index

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-12  6:24 [dpdk-dev] [PATCH v1 0/2] add rte_ring_reset and use it to flush a ring Gavin Hu
2018-12-12  6:24 ` [dpdk-dev] [PATCH v1 1/2] ring: add rte_ring_reset api to flush the ring Gavin Hu
2018-12-12  6:24 ` [dpdk-dev] [PATCH v1 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2018-12-12  6:47 ` [dpdk-dev] [PATCH v2 0/2] add rte ring reset api and use it to flush a ring by hash Gavin Hu
2018-12-12  6:47   ` [dpdk-dev] [PATCH v2 1/2] ring: add reset api to flush the ring when not in use Gavin Hu
2018-12-12  6:47   ` [dpdk-dev] [PATCH v2 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2018-12-12 10:15     ` Bruce Richardson [this message]
2018-12-12 19:28     ` Mattias Rönnblom
2019-03-15  3:31 ` [dpdk-dev] [PATCH v7 0/2] new ring reset api and use it by hash Gavin Hu
2019-03-15  3:31   ` Gavin Hu
2019-03-15  3:31 ` [dpdk-dev] [PATCH v7 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-03-15  3:31   ` Gavin Hu
2019-03-29 14:17   ` Olivier Matz
2019-03-29 14:17     ` Olivier Matz
2019-07-04 14:42     ` Thomas Monjalon
2019-07-12  9:32       ` Gavin Hu (Arm Technology China)
2019-07-12  9:53         ` Olivier Matz
2019-07-12 11:06           ` Gavin Hu (Arm Technology China)
2019-07-12 11:48             ` Olivier Matz
2019-07-12 15:07               ` Gavin Hu (Arm Technology China)
2019-07-12 15:40                 ` Honnappa Nagarahalli
2019-07-12 16:01                   ` Gavin Hu (Arm Technology China)
2019-07-16  8:47   ` Olivier Matz
2019-07-16  9:00     ` Olivier Matz
2019-03-15  3:31 ` [dpdk-dev] [PATCH v7 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-03-15  3:31   ` Gavin Hu
2019-07-12  9:26 ` [dpdk-dev] [PATCH v8 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-12  9:26 ` [dpdk-dev] [PATCH v8 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-07-12  9:26 ` [dpdk-dev] [PATCH v8 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-07-16  9:01   ` Olivier Matz
2019-07-16 11:31     ` Olivier Matz
2019-07-16 14:03       ` Gavin Hu (Arm Technology China)
2019-07-16 15:06         ` Thomas Monjalon
2019-07-16 19:25           ` Gavin Hu (Arm Technology China)
2019-07-12 15:54 ` [dpdk-dev] [PATCH v9 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu
2019-07-16 19:23 ` [dpdk-dev] [PATCH v10 0/2] new ring reset api and use it by hash Gavin Hu
2019-07-17 17:53   ` Thomas Monjalon
2019-07-16 19:23 ` [dpdk-dev] [PATCH v10 1/2] ring: add reset API to flush the ring when not in use Gavin Hu
2019-07-16 19:23 ` [dpdk-dev] [PATCH v10 2/2] hash: flush the rings instead of dequeuing one by one Gavin Hu

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