From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: "Xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] Interrupt latency close to 1ms on powerpc Xenomai 2.6.4
Date: Thu, 8 Oct 2015 16:52:14 +0200 [thread overview]
Message-ID: <20151008145214.GF8324@hermes.click-hack.org> (raw)
In-Reply-To: <20151008144340.GE21923@csclub.uwaterloo.ca>
On Thu, Oct 08, 2015 at 10:43:40AM -0400, Lennart Sorensen wrote:
> On Thu, Oct 08, 2015 at 08:50:26AM +0200, Philippe Gerum wrote:
> > This is a recent change (d818ed7d0a4682) after it became clear that
> > dealing with some interrupt types for enabling/disabling IRQ lines would
> > require this.
>
> Well at least that is an excellent explanation for the change in
> behaviour.
>
> Too bad that it has to be done for everything, just because some types
> require it, but there almost certainly isn't any nice way to do it
> otherwise.
>
> And as you said, xenomai 3 doesn't even allow doing interrupt handling
> from userspace the way we have been trying to do it.
>
> I suppose we could revert that patch for now until we can fix the real
> problem.
If you revert that patch, you will also have to remove some context
checks in the recent I-pipe patches.
--
Gilles.
https://click-hack.org
next prev parent reply other threads:[~2015-10-08 14:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-29 15:35 [Xenomai] Interrupt latency close to 1ms on powerpc Xenomai 2.6.4 PRADHAN, MAKARAND (RC-CA)
2015-09-29 15:50 ` Philippe Gerum
2015-09-29 16:04 ` PRADHAN, MAKARAND (RC-CA)
2015-09-29 16:15 ` Philippe Gerum
2015-09-29 17:14 ` PRADHAN, MAKARAND (RC-CA)
2015-10-02 18:30 ` PRADHAN, MAKARAND (RC-CA)
2015-10-02 20:23 ` PRADHAN, MAKARAND (RC-CA)
2015-10-07 14:25 ` PRADHAN, MAKARAND (RC-CA)
2015-10-07 18:47 ` Philippe Gerum
2015-10-07 18:55 ` Philippe Gerum
2015-10-07 19:27 ` PRADHAN, MAKARAND (RC-CA)
2015-10-07 19:32 ` Lennart Sorensen
2015-10-08 6:50 ` Philippe Gerum
2015-10-08 14:43 ` Lennart Sorensen
2015-10-08 14:52 ` Gilles Chanteperdrix [this message]
2015-10-08 15:15 ` Lennart Sorensen
2015-10-08 20:19 ` Lennart Sorensen
2015-10-08 20:27 ` Gilles Chanteperdrix
2015-10-08 20:30 ` Lennart Sorensen
2015-10-08 20:31 ` Gilles Chanteperdrix
2015-10-08 20:41 ` Lennart Sorensen
2015-10-08 14:54 ` Philippe Gerum
2015-10-08 15:05 ` PRADHAN, MAKARAND (RC-CA)
2015-10-08 15:17 ` Lennart Sorensen
2015-10-08 15:41 ` Philippe Gerum
2015-10-08 15:47 ` Gilles Chanteperdrix
2015-10-08 17:34 ` Philippe Gerum
2015-10-08 15:51 ` Lennart Sorensen
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