linux-kernel - Re: 2.6.23.9-rt13

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Message-ID: <3efb10970712130243t2172907cm31c5d3af29383c8b@mail.gmail.com>
Date:	Thu, 13 Dec 2007 11:43:16 +0100
From:	"Remy Bohmer" <linux@...mer.net>
To:	"Steven Rostedt" <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: 2.6.23.9-rt13

Hello Steven,

If I compile -rt13 I get some compile warnings on ARM (AT91):
1) This one did not exist in rt1:
In file included from kernel/sched.c:911:
kernel/sched_rt.c: In function 'dec_rt_tasks':
kernel/sched_rt.c:88: warning: unused variable 'highest_prio'
2)  This one is there already for a much longer time:
CC      kernel/rcupreempt.o
kernel/rcupreempt.c:1001: warning: 'per_cpu__rcu_dyntick_snapshot'
defined but not used

Both warnings are fixed by the attached patch, but warning 2 needs some review.
This var is defined twice in this file, 1 in the NO_HZ ifdef, and 1
which seems to be not used.

Kind Regards,

Remy


2007/12/13, Steven Rostedt <rostedt@...dmis.org>:
> We are pleased to announce the 2.6.23.9-rt13 tree, which can be
> downloaded from the location:
>
>  http://www.kernel.org/pub/linux/kernel/projects/rt/
>
> Changes since 2.6.23.9-rt12
>
>   - Backported the new RT Balancing code from sched-devel
>        New changes by Steven Rostedt, Gregory Haskins,
>         Ingo Molnar, and Dmitry Adamushko
>
>   - 2 dimension CPU Prio RT balancing search (Gregory Haskins)
>
>   - ARM compile fix (Kevin Hilman)
>
>   - Disable HPET legacy replacement for kdump (OGAWA Hirofumi)
>
>   - disable HPET on shutdown (OGAWA Hirofumi)
>
>   - fix for futex_wait signal stack corruption (Steven Rostedt)
>
>   - Handle IRQ_PENDING for simple irq thread (Steven Rostedt)
>
>   - latency tracer updates (Daniel Walker)
>
>   - Remove warning in local_bh_enable (Kevin Hilman)
>
>   - use real time pcp locking for page draining during cpu (Andi Kleen)
>
>   - Revert lazy disable irq from simple irq handler (Steven Rostedt)
>
>   - AT91 switch to edge from simple irq (Remy Bohmer)
>
>
> to build a 2.6.23.9-rt13 tree, the following patches should be applied:
>
>   http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.23.9.tar.bz2
>   http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.23.9-rt13.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-rt2
>
>
> The broken out patches are also available.
>
> -- Steve
>
>
> -
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View attachment "remove_unused_var_warning.patch" of type "text/x-patch" (1240 bytes)