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: Wed, 21 Mar 2012 09:38:25 +0100 [thread overview]
Message-ID: <4F699381.30105@domain.hid> (raw)
In-Reply-To: <CB8ED574.1EE7C%glen@domain.hid>
On 03/21/2012 05:46 AM, Glen Wernersbach wrote:
> I am going to start trying to see if I can figure out what is not getting
> set.
>
You could get useful information from the pipeline tracer, by enabling
CONFIG_IPIPE_TRACE, observing what exactly happens in kernel space from
the issuing of the ioctl() syscall until the the read() syscall on the
serial link.
You could set markers using Xenomai's I-pipe trace API in userland to
highlight portions of interest in your app code, freezing the capture to
snapshot a particular moment in the execution timeline. See
http://xenomai.org/index.php/I-pipe:Tracer.
NOTE: pay attention to the value in /proc/ipipe/trace/back_trace_points
to hold enough data.
> By the way. This board also has 4 other serial ports on a 8250.c driver. It
> also fails under the xeno build.
>
>
>
>
> 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:[~2012-03-21 8:38 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
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 [this message]
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=4F699381.30105@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.