* [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads
@ 2011-04-04 14:41 Sebastian Smolorz
2011-04-04 14:47 ` Philippe Gerum
0 siblings, 1 reply; 4+ messages in thread
From: Sebastian Smolorz @ 2011-04-04 14:41 UTC (permalink / raw)
To: xenomai
Hi,
there is a bug in kernel 2.6.37 (fixed in 2.6.37.1, see commit
1cdc65e1400d863f28af868ee1e645485b04f5ed) which blocks RT threads during
creation. They stick to a certain CPU core for a certain amount of time
(sometimes minutes ...) before they are migrated to the proper core and run
as expected.
Philippe, Gilles, maybe you could generate a new i-pipe patch based on the
newest 2.6.37-series kernel. I patched a 2.6.37.6 kernel with adeos-
ipipe-2.6.37-x86-2.9-00.patch and the problem was gone.
--
Sebastian
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads
2011-04-04 14:41 [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads Sebastian Smolorz
@ 2011-04-04 14:47 ` Philippe Gerum
2011-04-04 14:56 ` Gilles Chanteperdrix
0 siblings, 1 reply; 4+ messages in thread
From: Philippe Gerum @ 2011-04-04 14:47 UTC (permalink / raw)
To: Sebastian Smolorz; +Cc: xenomai
On Mon, 2011-04-04 at 16:41 +0200, Sebastian Smolorz wrote:
> Hi,
>
> there is a bug in kernel 2.6.37 (fixed in 2.6.37.1, see commit
> 1cdc65e1400d863f28af868ee1e645485b04f5ed) which blocks RT threads during
> creation. They stick to a certain CPU core for a certain amount of time
> (sometimes minutes ...) before they are migrated to the proper core and run
> as expected.
>
> Philippe, Gilles, maybe you could generate a new i-pipe patch based on the
> newest 2.6.37-series kernel. I patched a 2.6.37.6 kernel with adeos-
> ipipe-2.6.37-x86-2.9-00.patch and the problem was gone.
>
Ok, I'll handle this. I have some patches from Jan which have been
pending for too long in my tree to add to this one.
--
Philippe.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads
2011-04-04 14:47 ` Philippe Gerum
@ 2011-04-04 14:56 ` Gilles Chanteperdrix
2011-04-04 14:57 ` Philippe Gerum
0 siblings, 1 reply; 4+ messages in thread
From: Gilles Chanteperdrix @ 2011-04-04 14:56 UTC (permalink / raw)
To: Philippe Gerum; +Cc: xenomai
Philippe Gerum wrote:
> On Mon, 2011-04-04 at 16:41 +0200, Sebastian Smolorz wrote:
>> Hi,
>>
>> there is a bug in kernel 2.6.37 (fixed in 2.6.37.1, see commit
>> 1cdc65e1400d863f28af868ee1e645485b04f5ed) which blocks RT threads during
>> creation. They stick to a certain CPU core for a certain amount of time
>> (sometimes minutes ...) before they are migrated to the proper core and run
>> as expected.
>>
>> Philippe, Gilles, maybe you could generate a new i-pipe patch based on the
>> newest 2.6.37-series kernel. I patched a 2.6.37.6 kernel with adeos-
>> ipipe-2.6.37-x86-2.9-00.patch and the problem was gone.
>>
>
> Ok, I'll handle this. I have some patches from Jan which have been
> pending for too long in my tree to add to this one.
Since you are at it, could you have a look at:
https://mail.gna.org/public/adeos-main/2011-04/msg00001.html
--
Gilles.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads
2011-04-04 14:56 ` Gilles Chanteperdrix
@ 2011-04-04 14:57 ` Philippe Gerum
0 siblings, 0 replies; 4+ messages in thread
From: Philippe Gerum @ 2011-04-04 14:57 UTC (permalink / raw)
To: Gilles Chanteperdrix; +Cc: xenomai
On Mon, 2011-04-04 at 16:56 +0200, Gilles Chanteperdrix wrote:
> Philippe Gerum wrote:
> > On Mon, 2011-04-04 at 16:41 +0200, Sebastian Smolorz wrote:
> >> Hi,
> >>
> >> there is a bug in kernel 2.6.37 (fixed in 2.6.37.1, see commit
> >> 1cdc65e1400d863f28af868ee1e645485b04f5ed) which blocks RT threads during
> >> creation. They stick to a certain CPU core for a certain amount of time
> >> (sometimes minutes ...) before they are migrated to the proper core and run
> >> as expected.
> >>
> >> Philippe, Gilles, maybe you could generate a new i-pipe patch based on the
> >> newest 2.6.37-series kernel. I patched a 2.6.37.6 kernel with adeos-
> >> ipipe-2.6.37-x86-2.9-00.patch and the problem was gone.
> >>
> >
> > Ok, I'll handle this. I have some patches from Jan which have been
> > pending for too long in my tree to add to this one.
>
> Since you are at it, could you have a look at:
> https://mail.gna.org/public/adeos-main/2011-04/msg00001.html
>
Ok, queued. Thanks.
--
Philippe.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-04-04 14:57 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-04-04 14:41 [Xenomai-core] Bug in Linux kernel 2.6.37 blocks xenomai threads Sebastian Smolorz
2011-04-04 14:47 ` Philippe Gerum
2011-04-04 14:56 ` Gilles Chanteperdrix
2011-04-04 14:57 ` Philippe Gerum
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