We are pleased to announce the 2.6.25.8-rt7 tree, which can be
downloaded from the location:
http://rt.et.redhat.com/download/
Information on the RT patch can be found at:
http://rt.wiki.kernel.org/index.php/Main_Page
Changes since 2.6.25.4-rt6
- ported to 2.6.25.8
- rwlock pi_lock fixes on waking up multiple readers (Steven Rostedt)
- revert adaptive locks from RCU (Thomas Gleixner)
[ for some reason, using RCU causes some latency spikes, this
may be a sign of something going wrong in RCU itself ]
- rwlock mutex owner fix for waking up reader with readers held
(Steven Rostedt)
- rwlock remove waiter from pi_list on above fix (Steven Rostedt and
Thomas Gleixner)
- rwlock replace macro with inline (Thomas Gleixner)
- rwlock pending namespace updates (Thomas Gleixner)
- futex fix fault (Thomas Gleixner)
to build a 2.6.25.8-rt7 tree, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2
http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.25.8.bz2
http://rt.et.redhat.com/download/patch-2.6.25.8-rt7.bz2
And like always, my RT version of Matt Mackall's ketchup will get this
for you nicely:
http://people.redhat.com/srostedt/rt/tools/ketchup-0.9.8-rt3
The broken out patches are also available.
-- Steve
On Tuesday 24 June 2008 03:34, Steven Rostedt wrote:
> We are pleased to announce the 2.6.25.8-rt7 tree, which can be
> downloaded from the location:
>
> http://rt.et.redhat.com/download/
>
> Information on the RT patch can be found at:
>
> http://rt.wiki.kernel.org/index.php/Main_Page
>
> Changes since 2.6.25.4-rt6
>
> - ported to 2.6.25.8
>
> - rwlock pi_lock fixes on waking up multiple readers (Steven Rostedt)
>
> - revert adaptive locks from RCU (Thomas Gleixner)
> [ for some reason, using RCU causes some latency spikes, this
> may be a sign of something going wrong in RCU itself ]
>
> - rwlock mutex owner fix for waking up reader with readers held
> (Steven Rostedt)
>
> - rwlock remove waiter from pi_list on above fix (Steven Rostedt and
> Thomas Gleixner)
>
> - rwlock replace macro with inline (Thomas Gleixner)
>
> - rwlock pending namespace updates (Thomas Gleixner)
>
> - futex fix fault (Thomas Gleixner)
>
> to build a 2.6.25.8-rt7 tree, the following patches should be applied:
>
> http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2
> http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.25.8.bz2
> http://rt.et.redhat.com/download/patch-2.6.25.8-rt7.bz2
This occurs when I try to build a PowerPC (MPC5200) kernel:
[...]
In file included from kernel/sched.c:1318:
kernel/sched.c: In function 'sched_init':
kernel/sched.c:7702: error: implicit declaration of function 'global_rt_runtime'
[...]
And when I'm using the patch from Uli Brueggemann to fix it, I get:
[...]
In file included from kernel/sched.c:1325:
kernel/sched_rt.c: In function 'inc_rt_tasks':
kernel/sched_rt.c:290: error: 'struct rq' has no member named 'online'
[...]
Any hints?
Juergen Beisert
--
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
?Pengutronix - Linux Solutions for Science and Industry
? Handelsregister: Amtsgericht Hildesheim, HRA 2686
? ? ? Vertretung Sued/Muenchen, Germany
Phone: +49-8766-939 228 | Fax: +49-5121-206917-9
(Sorry for toppost)
I believe this is my fault. You must be building for uniprocessor? Ingo has a fix for this issue in sched-devel that should be pulled into -rt.
Sorry for the inconvenience. I will pull the patch myself and submit it when I get home (if someone doesn't beat me to it)
-greg
-----Original Message-----
From: Juergen Beisert <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: LKML <[email protected]>
To: <[email protected]>
Sent: 6/24/2008 8:15:49 AM
Subject: Re: 2.6.25.8-rt7
On Tuesday 24 June 2008 03:34, Steven Rostedt wrote:
> We are pleased to announce the 2.6.25.8-rt7 tree, which can be
> downloaded from the location:
>
> http://rt.et.redhat.com/download/
>
> Information on the RT patch can be found at:
>
> http://rt.wiki.kernel.org/index.php/Main_Page
>
> Changes since 2.6.25.4-rt6
>
> - ported to 2.6.25.8
>
> - rwlock pi_lock fixes on waking up multiple readers (Steven Rostedt)
>
> - revert adaptive locks from RCU (Thomas Gleixner)
> [ for some reason, using RCU causes some latency spikes, this
> may be a sign of something going wrong in RCU itself ]
>
> - rwlock mutex owner fix for waking up reader with readers held
> (Steven Rostedt)
>
> - rwlock remove waiter from pi_list on above fix (Steven Rostedt and
> Thomas Gleixner)
>
> - rwlock replace macro with inline (Thomas Gleixner)
>
> - rwlock pending namespace updates (Thomas Gleixner)
>
> - futex fix fault (Thomas Gleixner)
>
> to build a 2.6.25.8-rt7 tree, the following patches should be applied:
>
> http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2
> http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.25.8.bz2
> http://rt.et.redhat.com/download/patch-2.6.25.8-rt7.bz2
This occurs when I try to build a PowerPC (MPC5200) kernel:
[...]
In file included from kernel/sched.c:1318:
kernel/sched.c: In function 'sched_init':
kernel/sched.c:7702: error: implicit declaration of function 'global_rt_runtime'
[...]
And when I'm using the patch from Uli Brueggemann to fix it, I get:
[...]
In file included from kernel/sched.c:1325:
kernel/sched_rt.c: In function 'inc_rt_tasks':
kernel/sched_rt.c:290: error: 'struct rq' has no member named 'online'
[...]
Any hints?
Juergen Beisert
--
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
Pengutronix - Linux Solutions for Science and Industry
Handelsregister: Amtsgericht Hildesheim, HRA 2686
Vertretung Sued/Muenchen, Germany
Phone: +49-8766-939 228 | Fax: +49-5121-206917-9
On Tue, 24 Jun 2008, Gregory Haskins wrote:
>
> (Sorry for toppost)
>
> I believe this is my fault. You must be building for uniprocessor? Ingo has a fix for this issue in sched-devel that should be pulled into -rt.
>
> Sorry for the inconvenience. I will pull the patch myself and submit it when I get home (if someone doesn't beat me to it)
>
I'm looking forward to it ;-)
>
> This occurs when I try to build a PowerPC (MPC5200) kernel:
>
> [...]
> In file included from kernel/sched.c:1318:
> kernel/sched.c: In function 'sched_init':
> kernel/sched.c:7702: error: implicit declaration of function 'global_rt_runtime'
> [...]
I'm waiting on a Signed-off-by to include the patch. If I don't get it
soon then I'll just sign it off my self and leave the "From" line intact.
But I would feel much more comfortable with an actual SOB.
-- Steve
On Tuesday 24 June 2008 16:31, Gregory Haskins wrote:
> I believe this is my fault. You must be building for uniprocessor? Ingo
> has a fix for this issue in sched-devel that should be pulled into -rt.
I can avoid this failure, when I disable the "Group scheduling for
SCHED_RR/FIFO" menu entry. Don't know the impact.
Juergen
--
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
?Pengutronix - Linux Solutions for Science and Industry
? Handelsregister: Amtsgericht Hildesheim, HRA 2686
? ? ? Vertretung Sued/Muenchen, Germany
Phone: +49-8766-939 228 | Fax: +49-5121-206917-9
>>> On Tue, Jun 24, 2008 at 10:44 AM, in message
<[email protected]>, Steven Rostedt
<[email protected]> wrote:
> On Tue, 24 Jun 2008, Gregory Haskins wrote:
>
>>
>> (Sorry for toppost)
>>
>> I believe this is my fault. You must be building for uniprocessor? Ingo
> has a fix for this issue in sched-devel that should be pulled into -rt.
>>
>> Sorry for the inconvenience. I will pull the patch myself and submit it
> when I get home (if someone doesn't beat me to it)
>>
>
> I'm looking forward to it ;-)
Patch is attached (from linux-2.6-tip). I meant to send this back around when the
offending patch went in, but it slipped through the cracks. Sorry for the
inconvenience.
Regards,
-Greg
On Tue, 24 Jun 2008, Juergen Beisert wrote:
>
> On Tuesday 24 June 2008 16:31, Gregory Haskins wrote:
> > I believe this is my fault. You must be building for uniprocessor? Ingo
> > has a fix for this issue in sched-devel that should be pulled into -rt.
>
> I can avoid this failure, when I disable the "Group scheduling for
> SCHED_RR/FIFO" menu entry. Don't know the impact.
>
Disabling that shouldn't effect you. [ CC'd Peter who can tell you better]
-- Steve