From: Philippe Gerum <rpm@xenomai.org>
To: Glen Wernersbach <glen@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] Linux Serial Does not work with CONFIG_XENO_OPT_PERVASIVE enabled
Date: Tue, 20 Mar 2012 22:41:21 +0100 [thread overview]
Message-ID: <4F68F981.80100@domain.hid> (raw)
In-Reply-To: <CB8E6CC0.1EE6B%glen@domain.hid>
On 03/20/2012 10:20 PM, Glen Wernersbach wrote:
> I know that there are some compile bugs if you turn off
> CONFIG_XENO_OPT_PERVASIVE.
>
> What is the downside to running without it?
>
Don't bother for these build bugs, they were innocuous and due to 2.6.0
being the first code drop of a major release. The system is stable with
or without.
PERVASIVE gives you real-time support in userland; if you disable it,
you only have support for writing apps in kernel space directly on top
RT drivers.
PERVASIVE is by no mean directly related to hw setup, serial links, etc.
This is only about switching on/off the userland request channel to the
Xenomai kernel, nothing else. So any interaction with a serial driver
could only be really remote, and I can't think of any right now.
Disabling this option might simply change the kernel code layout
significantly enough to trigger a completely unrelated bug, since the
Xenomai footprints in kernel shrinks in that case, changing the code
placement for sure.
Starting investigations from the matrix driver seems the best way to
find the issue.
>
>
> On 3/20/12 4:35 PM, "Gilles Chanteperdrix"
> <gilles.chanteperdrix@xenomai.org> wrote:
>
>> On 03/20/2012 09:19 PM, Glen Wernersbach wrote:
>>> I actually think in is in the settings because if run just the setup part of
>>> the code without reading and writing, on the kernel that works my activity
>>> LED turns off.
>>>
>>> On the xeno kernel the LED never changes.
>>
>> I actually think that CONFIG_XENO_OPT_PERVASIVE does not make any
>> difference which could cause a difference of hardware behaviour. So, it
>> must be another option triggered by this config change. So, if you want
>> us to help you, please post the .configs.
>>
>
--
Philippe.
next prev parent reply other threads:[~2012-03-20 21:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 13:28 [Xenomai-help] Linux Serial Does not work with CONFIG_XENO_OPT_PERVASIVE enabled Glen Wernersbach
2012-03-20 13:44 ` Philippe Gerum
2012-03-20 13:48 ` Glen Wernersbach
2012-03-20 13:57 ` Philippe Gerum
2012-03-20 14:07 ` Glen Wernersbach
2012-03-20 14:14 ` Philippe Gerum
2012-03-20 14:17 ` Philippe Gerum
2012-03-20 14:31 ` Philippe Gerum
2012-03-20 14:34 ` Glen Wernersbach
2012-03-20 14:47 ` Philippe Gerum
2012-03-20 14:53 ` Glen Wernersbach
2012-03-20 15:06 ` Philippe Gerum
2012-03-20 15:17 ` Glen Wernersbach
2012-03-20 15:24 ` Gilles Chanteperdrix
2012-03-20 15:27 ` Philippe Gerum
2012-03-20 16:09 ` Glen Wernersbach
2012-03-20 15:12 ` Gilles Chanteperdrix
2012-03-20 15:22 ` Glen Wernersbach
2012-03-20 15:26 ` Gilles Chanteperdrix
2012-03-20 16:40 ` Glen Wernersbach
2012-03-20 19:38 ` Gilles Chanteperdrix
2012-03-20 20:19 ` Glen Wernersbach
2012-03-20 20:35 ` Gilles Chanteperdrix
2012-03-20 21:20 ` Glen Wernersbach
2012-03-20 21:41 ` Philippe Gerum [this message]
2012-03-21 4:46 ` Glen Wernersbach
2012-03-21 7:43 ` Gilles Chanteperdrix
2012-03-21 13:21 ` Glen Wernersbach
2012-03-26 5:27 ` Glen Wernersbach
2012-03-21 8:38 ` Philippe Gerum
2012-03-21 14:41 ` Glen Wernersbach
2012-03-21 15:07 ` Philippe Gerum
2012-03-21 16:53 ` Glen Wernersbach
2012-03-20 16:22 ` Philippe Gerum
2012-03-20 16:32 ` Glen Wernersbach
2012-03-20 16:42 ` Gilles Chanteperdrix
2012-03-20 16:48 ` Glen Wernersbach
2012-03-20 14:50 ` Gilles Chanteperdrix
2012-03-20 14:59 ` Glen Wernersbach
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=4F68F981.80100@domain.hid \
--to=rpm@xenomai.org \
--cc=glen@domain.hid \
--cc=xenomai@xenomai.org \
/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.