linux-kernel - Re: [PATCH net-next v2 0/2] add benchmark selftest and optimization for ptr

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Message-ID: <20210625024131-mutt-send-email-mst@kernel.org>
Date:   Fri, 25 Jun 2021 02:42:04 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Yunsheng Lin <linyunsheng@...wei.com>
Cc:     davem@...emloft.net, kuba@...nel.org, jasowang@...hat.com,
        brouer@...hat.com, paulmck@...nel.org, peterz@...radead.org,
        will@...nel.org, shuah@...nel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linuxarm@...neuler.org
Subject: Re: [PATCH net-next v2 0/2] add benchmark selftest and optimization
 for ptr_ring

On Fri, Jun 25, 2021 at 11:18:54AM +0800, Yunsheng Lin wrote:
> Patch 1: add a selftest app to benchmark the performance
>          of ptr_ring.
> Patch 2: make __ptr_ring_empty() checking more reliable
>          and use the just added selftest to benchmark the
>          performance impact.
> 
> V2: add patch 1 and add performance data for patch 2.

Thanks for the patches!
There are some things to improve there - I sent comments
in response to invididual patches.

> Yunsheng Lin (2):
>   selftests/ptr_ring: add benchmark application for ptr_ring
>   ptr_ring: make __ptr_ring_empty() checking more reliable
> 
>  MAINTAINERS                                      |   5 +
>  include/linux/ptr_ring.h                         |  25 ++-
>  tools/testing/selftests/ptr_ring/Makefile        |   6 +
>  tools/testing/selftests/ptr_ring/ptr_ring_test.c | 249 +++++++++++++++++++++++
>  tools/testing/selftests/ptr_ring/ptr_ring_test.h | 150 ++++++++++++++
>  5 files changed, 426 insertions(+), 9 deletions(-)
>  create mode 100644 tools/testing/selftests/ptr_ring/Makefile
>  create mode 100644 tools/testing/selftests/ptr_ring/ptr_ring_test.c
>  create mode 100644 tools/testing/selftests/ptr_ring/ptr_ring_test.h
> 
> -- 
> 2.7.4