DPDK patches and discussions
 help / color / mirror / Atom feed
From: Ferruh Yigit <ferruh.yigit@amd.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: dev@dpdk.org, Aman Singh <aman.deep.singh@intel.com>,
	Yuying Zhang <yuying.zhang@intel.com>,
	Ajit Khaparde <ajit.khaparde@broadcom.com>,
	Somnath Kotur <somnath.kotur@broadcom.com>,
	Nithin Dabilpuram <ndabilpuram@marvell.com>,
	Kiran Kumar K <kirankumark@marvell.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Satha Rao <skoteshwar@marvell.com>,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@nxp.com>,
	Simei Su <simei.su@intel.com>, Wenjun Wu <wenjun1.wu@intel.com>,
	Qi Zhang <qi.z.zhang@intel.com>,
	Xiao Wang <xiao.w.wang@intel.com>,
	Beilei Xing <beilei.xing@intel.com>,
	Qiming Yang <qiming.yang@intel.com>,
	Jiawen Wu <jiawenwu@trustnetic.com>,
	Jian Wang <jianwang@trustnetic.com>
Subject: Re: [PATCH] drivers: remove compile-time option for IEEE 1588
Date: Thu, 2 Nov 2023 21:13:14 +0000	[thread overview]
Message-ID: <fd2bfb4f-9ddc-4605-8baf-4be360d69896@amd.com> (raw)
In-Reply-To: <2634630.Isy0gbHreE@thomas>

On 6/25/2023 4:45 PM, Thomas Monjalon wrote:
> 23/06/2023 16:00, Ferruh Yigit:
>> On 2/3/2023 1:28 PM, Thomas Monjalon wrote:
>>> The option RTE_LIBRTE_IEEE1588 has no effect on any library
>>> unlike its name.
>>>
>>> Also we are suppose to enable/disable features dynamically,
>>> not at compilation time.
>>>
>>> And the best is that this macro is neither documented,
>>> nor in rte_config.h.
>>>
>>> It looks to be a mistake keeping this flag, so it is removed,
>>> meaning always enabled.
>>> PS: it is disabling vector paths of some drivers.
>>>
>>
>> PTP (IEEE1588) processing brings additional overhead to datapath.
>>
>> Agree that it is not good to have undocumented compile macro, but just
>> removing it may cause performance degradation.
>>
>> It may be possible to have separate burst function that supports PTP and
>> driver configures it when application explicitly request it with a new
>> offload flag (although it is not exactly an offload), what do you think?
> 
> The best is to enable dynamically with different functions.
> 
> 

There was no comment from driver maintainers.

Perhaps better option is plan flag removal and execute it, like to
remove the flag in 24.11 LTS, this gives enough time for drivers to update.

If this sounds good, I can send a deprecation notice to record this plan.

  reply	other threads:[~2023-11-02 21:13 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-03 13:28 Thomas Monjalon
2023-06-23 14:00 ` Ferruh Yigit
2023-06-25 15:45   ` Thomas Monjalon
2023-11-02 21:13     ` Ferruh Yigit [this message]
2023-11-02 21:21       ` Ajit Khaparde
2023-11-02 22:17         ` Thomas Monjalon
2023-11-03  0:08           ` Ferruh Yigit
2024-04-17 13:24             ` Ferruh Yigit
2024-10-03 19:12               ` Stephen Hemminger
2024-10-03 22:36                 ` Ferruh Yigit

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=fd2bfb4f-9ddc-4605-8baf-4be360d69896@amd.com \
    --to=ferruh.yigit@amd.com \
    --cc=ajit.khaparde@broadcom.com \
    --cc=aman.deep.singh@intel.com \
    --cc=beilei.xing@intel.com \
    --cc=dev@dpdk.org \
    --cc=hemant.agrawal@nxp.com \
    --cc=jianwang@trustnetic.com \
    --cc=jiawenwu@trustnetic.com \
    --cc=kirankumark@marvell.com \
    --cc=ndabilpuram@marvell.com \
    --cc=qi.z.zhang@intel.com \
    --cc=qiming.yang@intel.com \
    --cc=sachin.saxena@nxp.com \
    --cc=simei.su@intel.com \
    --cc=skori@marvell.com \
    --cc=skoteshwar@marvell.com \
    --cc=somnath.kotur@broadcom.com \
    --cc=thomas@monjalon.net \
    --cc=wenjun1.wu@intel.com \
    --cc=xiao.w.wang@intel.com \
    --cc=yuying.zhang@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).