All of lore.kernel.org
 help / color / mirror / Atom feed
From: Philippe Gerum <rpm@xenomai.org>
To: Russell Johnson <russell.johnson@kratosdefense.com>
Cc: "xenomai@lists.linux.dev" <xenomai@lists.linux.dev>,
	Bryan Butler <Bryan.Butler@kratosdefense.com>,
	Shawn McManus <shawn.mcmanus@kratosdefense.com>
Subject: Re: [External] - Re: EVL Memory
Date: Mon, 21 Nov 2022 16:56:09 +0100	[thread overview]
Message-ID: <877czothz0.fsf@xenomai.org> (raw)
In-Reply-To: <PH1P110MB105079B5A344B300F33874E3E2089@PH1P110MB1050.NAMP110.PROD.OUTLOOK.COM>


Russell Johnson <russell.johnson@kratosdefense.com> writes:

> [[S/MIME Signed Part:Undecided]]
> After fixing that line of code that was causing errors with building the EVL
> kernel, I was able to successfully build. I am now running our scenario that
> was causing issues previously. I will let you know what issues (if any) I
> run into. 
>
> To your other point, I can confirm that the priorities that are being
> boosted are never being cleared back to the original base priorities.. What
> do you recommend looking at first in order to figure out why this is
> happening?
>

I could not reproduce this PI deboosting issue yet, however I eventually
figured out the reason for the lockup - which may translate to RCU
warnings on your system with many CPUs: this is a Dovetail issue wrt
lockdep support. IOW, the bug is in the lock debug infrastructure,
caused by adding interrupt pipelining to the picture.

You can work around this issue until fixed by disabling PROVE_LOCKING
and LOCKDEP entirely (which is also enabled by DEBUG_LOCK_ALLOC and
DEBUG_WW_MUTEX_SLOWPATH indirectly).

-- 
Philippe.

  parent reply	other threads:[~2022-11-21 16:37 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <PH1P110MB1050AD875FCD924D827A0A54E23E9@PH1P110MB1050.NAMP110.PROD.OUTLOOK.COM>
     [not found] ` <PH1P110MB10508DD9688B7D0E82AB30CDE23E9@PH1P110MB1050.NAMP110.PROD.OUTLOOK.COM>
2022-11-09 17:04   ` EVL Memory Russell Johnson
2022-11-09 17:20     ` Philippe Gerum
2022-11-11 21:34       ` [External] - " Russell Johnson
2022-11-14  9:53         ` Philippe Gerum
2022-11-14 22:42           ` Russell Johnson
2022-11-15  8:33             ` Philippe Gerum
2022-11-15 17:05               ` Russell Johnson
2022-11-15 18:36                 ` Philippe Gerum
2022-11-16 15:48                   ` Philippe Gerum
2022-11-16 21:37                     ` Russell Johnson
2022-11-17 16:48                       ` Philippe Gerum
2022-11-17 16:57                         ` Russell Johnson
2022-11-17 17:03                           ` Philippe Gerum
2022-11-17 17:37                             ` Russell Johnson
2022-11-18  8:06                               ` Philippe Gerum
2022-11-18 21:08                                 ` Russell Johnson
2022-11-17 22:19                             ` Russell Johnson
2022-11-18  8:02                               ` Philippe Gerum
2022-11-18  8:08                         ` Philippe Gerum
2022-11-19 16:37                           ` Russell Johnson
2022-11-19 16:42                             ` Philippe Gerum
2022-11-19 16:50                               ` Russell Johnson
2022-11-19 18:11                               ` Russell Johnson
2022-11-20  8:25                                 ` Philippe Gerum
2022-11-21 15:56                             ` Philippe Gerum [this message]
2022-11-21 18:33                               ` Bryan Butler
2022-11-28 15:21                                 ` Russell Johnson
2022-11-28 16:49                                   ` Philippe Gerum
2022-11-28 20:59                                     ` Russell Johnson
     [not found]                                       ` <0082bff2d91b0125ac60050159d3003e64b45bffa35e0c4f0ed9799e38b97b8c@mu>
2022-11-30 15:57                                         ` Philippe Gerum
2022-12-01 14:36                                           ` Philippe Gerum
2022-12-01 20:01                                             ` Russell Johnson
2022-12-02  9:18                                               ` Philippe Gerum
2022-12-02 15:12                                                 ` Russell Johnson
2022-12-02 15:27                                                   ` Philippe Gerum
2022-12-02 15:38                                                     ` Philippe Gerum
2022-12-02 20:50                                                       ` Russell Johnson
2022-12-03 11:37                                                         ` Philippe Gerum
2022-12-02 15:48                                                     ` Russell Johnson
2022-12-02 16:50                                                       ` Philippe Gerum
2022-12-02 17:22                                                       ` Philippe Gerum
2022-12-02 22:26                                                         ` Russell Johnson
2022-12-03 11:37                                                           ` Philippe Gerum
2022-12-03 15:44                                                             ` Philippe Gerum
2022-12-04 11:05                                                               ` Philippe Gerum
2022-12-04 18:05                                                                 ` Philippe Gerum
2022-12-04 18:43                                                                   ` Russell Johnson
2022-12-05  6:53                                                                   ` Russell Johnson
2022-12-05  6:59                                                                     ` Russell Johnson
2022-12-05  8:24                                                                       ` Philippe Gerum
2022-12-05 16:31                                                                         ` Russell Johnson
2022-12-05 16:38                                                                           ` Russell Johnson
2022-12-05 17:01                                                                             ` Philippe Gerum
2022-12-05  8:45                                                                     ` Philippe Gerum
2022-11-14 23:33           ` Russell Johnson

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=877czothz0.fsf@xenomai.org \
    --to=rpm@xenomai.org \
    --cc=Bryan.Butler@kratosdefense.com \
    --cc=russell.johnson@kratosdefense.com \
    --cc=shawn.mcmanus@kratosdefense.com \
    --cc=xenomai@lists.linux.dev \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.