linux-kernel - Re: [Announce] 2.6.29.3-rt12

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Message-ID: <5a7b8b7b0905121716y646a2f68qad9181362caa22f6@mail.gmail.com>
Date:	Wed, 13 May 2009 12:16:09 +1200
From:	Hugo Vincent <hugo.vincent@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Carsten Emde <ce@...g.ch>,
	Clark Williams <williams@...hat.com>,
	Frank Rowand <frank.rowand@...sony.com>,
	Robin Gareus <robin@...eus.org>,
	Gregory Haskins <ghaskins@...ell.com>,
	Philippe Reynes <philippe.reynes@...smpp.fr>,
	Fernando Lopez-Lezcano <nando@...ma.stanford.edu>,
	Will Schmidt <will_schmidt@...t.ibm.com>,
	Darren Hart <dvhltc@...ibm.com>, Jan Blunck <jblunck@...e.de>,
	Sven-Thorsten Dietrich <sdietrich@...ell.com>
Subject: Re: [Announce] 2.6.29.3-rt12

This patch resulted in a broken build for me, until I did this:

--- a/patch-2.6.29.3-rt12
+++ b/patch-2.6.29.3-rt12
@@ -121754,7 +121754,7 @@ Index: linux-2.6-tip/kernel/sched.c
  }

  /*
-@@ -2801,6 +3177,15 @@ static void update_cpu_load(struct rq *t
+@@ -2801,6 +3177,17 @@ static void update_cpu_load(struct rq *t
  			new_load += scale-1;
  		this_rq->cpu_load[i] = (old_load*(scale-1) + new_load) >> i;
  	}
@@ -121765,8 +121765,10 @@ Index: linux-2.6-tip/kernel/sched.c
 +	this_rq->calc_load_update += LOAD_FREQ;
 +	calc_load_account_active(this_rq);
 +
++#ifdef CONFIG_SMP
 +	if (this_rq->cpu == calc_load_cpu)
 +		calc_global_load();
++#endif
  }

  #ifdef CONFIG_SMP

I have no idea if that is a valid thing to do, but it seems to work for me.

Regards,

Hugo Vincent

On Wed, May 13, 2009 at 11:27 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
> We are pleased to announce the next update to our new preempt-rt
> series.
>
>    - rebase to 2.6.29.3 (NOP)
>    - loadavg optimization
>    - futex updates (tglx, peterz)
>
> Download locations:
>
>    http://rt.et.redhat.com/download/
>    http://www.kernel.org/pub/linux/kernel/projects/rt/
>
> Information on the RT patch can be found at:
>
>    http://rt.wiki.kernel.org/index.php/Main_Page
>
> to build the 2.6.29.3-rt12 tree, the following patches should be
> applied:
>
>    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.3.tar.bz2
>    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.3-rt12.bz2
>
> The broken out patches are also available at the same download
> locations.
>
> Enjoy !
>
>       tglx
> --
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