DPDK patches and discussions
 help / color / mirror / Atom feed
From: Konstantin Ananyev <konstantin.ananyev@huawei.com>
To: Robin Jarry <rjarry@redhat.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Tyler Retzlaff" <roretzla@linux.microsoft.com>,
	"Kevin Laatz" <kevin.laatz@intel.com>,
	"Morten Brørup" <mb@smartsharesystems.com>
Subject: RE: [PATCH v5 2/4] eal: allow applications to report their cpu usage
Date: Mon, 6 Feb 2023 20:44:01 +0000	[thread overview]
Message-ID: <3a2a9bbd83c241c09181d1b8315bb282@huawei.com> (raw)
In-Reply-To: <CQBRQQEMOWO2.2A82SSWM5H5PI@ringo>



> Konstantin Ananyev, Feb 06, 2023 at 21:34:
> > Yes, app knows what resources it wants to free.
> > But it has no way to know *when* it is safe to free them.
> > Just a bit more explanation:
> > App invokes your function which resets global value of CB.
> > How would it know that after return from this function none
> > other thread still not executing this CB right now?
> > And how determine when this thread will finish with executing CB function?
> > That's why it might be easier simply not allow to reset it at all....
> 
> Ok I see. But what should we do to prevent this? Simply ignore the
> request and log a warning?

That's seems like simplest choice to me...
Or if you still prefer to allow it - put a special comment that it is user
responsibility to handle such possible race-condition (inside his CB function or so).
 
 



  reply	other threads:[~2023-02-06 20:44 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-23 10:26 [RFC PATCH 0/4] lcore telemetry improvements Robin Jarry
2022-11-23 10:26 ` [RFC PATCH 1/4] eal: add lcore info in telemetry Robin Jarry
2022-11-23 16:44   ` Stephen Hemminger
2022-11-23 23:15     ` Robin Jarry
2022-11-23 10:26 ` [RFC PATCH 2/4] eal: allow applications to report their cpu utilization Robin Jarry
2022-11-23 10:26 ` [RFC PATCH 3/4] testpmd: add show lcores command Robin Jarry
2022-11-23 10:26 ` [RFC PATCH 4/4] testpmd: report lcore usage Robin Jarry
2022-11-28  8:59 ` [PATCH v2 0/4] lcore telemetry improvements Robin Jarry
2022-11-28  8:59   ` [PATCH v2 1/4] eal: add lcore info in telemetry Robin Jarry
2022-11-28  8:59   ` [PATCH v2 2/4] eal: allow applications to report their cpu cycles utilization Robin Jarry
2022-11-28 10:52     ` Morten Brørup
2022-11-29  8:19       ` Robin Jarry
2022-11-28  8:59   ` [PATCH v2 3/4] testpmd: add dump_lcores command Robin Jarry
2022-11-28  8:59   ` [PATCH v2 4/4] testpmd: report lcore usage Robin Jarry
2022-11-29 15:33 ` [PATCH v3 0/4] lcore telemetry improvements Robin Jarry
2022-11-29 15:33   ` [PATCH v3 1/4] eal: add lcore info in telemetry Robin Jarry
2022-11-29 15:33   ` [PATCH v3 2/4] eal: allow applications to report their cpu cycles usage Robin Jarry
2022-11-29 16:10     ` Mattias Rönnblom
2022-12-07 11:00       ` Robin Jarry
2022-12-07 11:21         ` Morten Brørup
2022-11-29 15:33   ` [PATCH v3 3/4] testpmd: add dump_lcores command Robin Jarry
2022-11-29 15:33   ` [PATCH v3 4/4] testpmd: report lcore usage Robin Jarry
2022-11-29 16:14   ` [PATCH v3 0/4] lcore telemetry improvements Mattias Rönnblom
2022-12-07 16:21 ` [PATCH " Robin Jarry
2022-12-07 16:21   ` [PATCH 1/4] eal: add lcore info in telemetry Robin Jarry
2022-12-07 16:21   ` [PATCH 2/4] eal: allow applications to report their cpu usage Robin Jarry
2022-12-13 15:49     ` Robin Jarry
2022-12-13 16:39       ` Morten Brørup
2022-12-13 17:45       ` Tyler Retzlaff
2022-12-07 16:21   ` [PATCH 3/4] testpmd: add dump_lcores command Robin Jarry
2022-12-07 16:21   ` [PATCH 4/4] testpmd: report lcore usage Robin Jarry
2022-12-16 10:21 ` [PATCH v5 0/4] lcore telemetry improvements Robin Jarry
2022-12-16 10:21   ` [PATCH v5 1/4] eal: add lcore info in telemetry Robin Jarry
2023-01-18  9:42     ` Kevin Laatz
2023-01-18 10:21       ` Morten Brørup
2023-01-18 11:03         ` Kevin Laatz
2023-01-18 11:35           ` Morten Brørup
2023-01-18 14:45       ` Robin Jarry
2023-01-18 16:01         ` Kevin Laatz
2023-01-18 16:17           ` Robin Jarry
2022-12-16 10:21   ` [PATCH v5 2/4] eal: allow applications to report their cpu usage Robin Jarry
2022-12-16 10:47     ` Morten Brørup
2023-01-04 10:13       ` Robin Jarry
2023-01-04 10:28         ` Morten Brørup
2022-12-22 12:41     ` Konstantin Ananyev
2023-01-04 10:10       ` Robin Jarry
2023-01-04 10:53         ` Konstantin Ananyev
2023-01-18 16:46           ` Robin Jarry
2023-02-06 20:07             ` Konstantin Ananyev
2023-02-06 20:29               ` Robin Jarry
2023-02-06 20:34                 ` Konstantin Ananyev
2023-02-06 20:39                   ` Robin Jarry
2023-02-06 20:44                     ` Konstantin Ananyev [this message]
2023-02-06 20:55                       ` Robin Jarry
2023-02-07 13:12                         ` Konstantin Ananyev
2023-01-04 10:15     ` Robin Jarry
2022-12-16 10:21   ` [PATCH v5 3/4] testpmd: add dump_lcores command Robin Jarry
2022-12-22 12:43     ` Konstantin Ananyev
2022-12-16 10:21   ` [PATCH v5 4/4] testpmd: report lcore usage Robin Jarry
2022-12-22 12:44     ` Konstantin Ananyev
2023-01-18  9:13   ` [PATCH v5 0/4] lcore telemetry improvements Robin Jarry
2023-01-19 15:06 ` [PATCH v6 0/5] " Robin Jarry
2023-01-19 15:06   ` [PATCH v6 1/5] eal: add lcore info in telemetry Robin Jarry
2023-01-19 19:42     ` Kevin Laatz
2023-01-26 11:19     ` David Marchand
2023-01-19 15:06   ` [PATCH v6 2/5] eal: allow applications to report their cpu usage Robin Jarry
2023-01-19 19:42     ` Kevin Laatz
2023-01-26 11:22     ` David Marchand
2023-01-19 15:06   ` [PATCH v6 3/5] testpmd: add dump_lcores command Robin Jarry
2023-01-19 19:42     ` Kevin Laatz
2023-01-26 11:22     ` David Marchand
2023-01-19 15:06   ` [PATCH v6 4/5] testpmd: report lcore usage Robin Jarry
2023-01-19 19:42     ` Kevin Laatz
2023-01-19 15:06   ` [PATCH v6 5/5] telemetry: add /eal/lcore/usage endpoint Robin Jarry
2023-01-19 16:21     ` Morten Brørup
2023-01-19 16:34       ` Robin Jarry
2023-01-19 16:45         ` Morten Brørup
2023-01-19 19:42     ` Kevin Laatz
2023-02-02 13:43 ` [PATCH v8 0/5] lcore telemetry improvements Robin Jarry
2023-02-02 13:43   ` [PATCH v8 1/5] eal: add lcore info in telemetry Robin Jarry
2023-02-06  3:50     ` fengchengwen
2023-02-06  8:22       ` Robin Jarry
2023-02-06 11:22         ` fengchengwen
2023-02-06 11:46           ` Robin Jarry
2023-02-06 12:08             ` fengchengwen
2023-02-02 13:43   ` [PATCH v8 2/5] eal: report applications lcore usage Robin Jarry
2023-02-06  4:00     ` fengchengwen
2023-02-06  7:36       ` Morten Brørup
2023-02-06  8:21         ` Robin Jarry
2023-02-06 11:18         ` fengchengwen
2023-02-06  8:48     ` David Marchand
2023-02-06  9:03       ` Robin Jarry
2023-02-02 13:43   ` [PATCH v8 3/5] app/testpmd: add dump command for lcores Robin Jarry
2023-02-06  3:34     ` fengchengwen
2023-02-02 13:43   ` [PATCH v8 4/5] app/testpmd: report lcore usage Robin Jarry
2023-02-06  3:31     ` fengchengwen
2023-02-06  8:58     ` David Marchand
2023-02-06  9:08       ` Robin Jarry
2023-02-06 15:06         ` David Marchand
2023-02-02 13:43   ` [PATCH v8 5/5] eal: add lcore usage telemetry endpoint Robin Jarry
2023-02-02 14:00     ` Morten Brørup
2023-02-06  3:27     ` fengchengwen
2023-02-06  8:24       ` Robin Jarry
2023-02-06 11:32         ` fengchengwen
2023-02-05 23:11   ` [PATCH v8 0/5] lcore telemetry improvements Thomas Monjalon
2023-02-07 19:37 ` [PATCH v9 " Robin Jarry
2023-02-07 19:37 ` [PATCH v9 1/5] eal: add lcore info in telemetry Robin Jarry
2023-02-08  2:24   ` lihuisong (C)
2023-02-08 17:04     ` Robin Jarry
2023-02-09  2:18       ` lihuisong (C)
2023-02-09  8:31         ` David Marchand
2023-02-09  8:38           ` David Marchand
2023-02-07 19:37 ` [PATCH v9 2/5] eal: report applications lcore usage Robin Jarry
2023-02-07 19:37 ` [PATCH v9 3/5] app/testpmd: add dump command for lcores Robin Jarry
2023-02-07 19:37 ` [PATCH v9 4/5] app/testpmd: report lcore usage Robin Jarry
2023-02-08  2:59   ` lihuisong (C)
2023-02-07 19:37 ` [PATCH v9 5/5] eal: add lcore usage telemetry endpoint Robin Jarry
2023-02-08  8:45 ` [RESEND PATCH v9 0/5] lcore telemetry improvements Robin Jarry
2023-02-08  8:45   ` [RESEND PATCH v9 1/5] eal: add lcore info in telemetry Robin Jarry
2023-02-08  8:45   ` [RESEND PATCH v9 2/5] eal: report applications lcore usage Robin Jarry
2023-02-08  8:45   ` [RESEND PATCH v9 3/5] app/testpmd: add dump command for lcores Robin Jarry
2023-02-08  8:45   ` [RESEND PATCH v9 4/5] app/testpmd: report lcore usage Robin Jarry
2023-02-09  8:43     ` David Marchand
2023-02-08  8:45   ` [RESEND PATCH v9 5/5] eal: add lcore usage telemetry endpoint Robin Jarry
2023-02-09  8:44   ` [RESEND PATCH v9 0/5] lcore telemetry improvements David Marchand
2023-02-09  9:43 ` [PATCH v10 " Robin Jarry
2023-02-09  9:43   ` [PATCH v10 1/5] eal: add lcore info in telemetry Robin Jarry
2023-02-09  9:43   ` [PATCH v10 2/5] eal: report applications lcore usage Robin Jarry
2023-02-09  9:43   ` [PATCH v10 3/5] app/testpmd: add dump command for lcores Robin Jarry
2023-02-09  9:43   ` [PATCH v10 4/5] app/testpmd: report lcore usage Robin Jarry
2023-02-09  9:43   ` [PATCH v10 5/5] eal: add lcore usage telemetry endpoint Robin Jarry
2023-02-10 13:27   ` [PATCH v10 0/5] lcore telemetry improvements David Marchand

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=3a2a9bbd83c241c09181d1b8315bb282@huawei.com \
    --to=konstantin.ananyev@huawei.com \
    --cc=dev@dpdk.org \
    --cc=kevin.laatz@intel.com \
    --cc=mb@smartsharesystems.com \
    --cc=rjarry@redhat.com \
    --cc=roretzla@linux.microsoft.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).