linux-kernel - Re: 2.6.37-ck1

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Date:	Sat, 15 Jan 2011 16:03:14 -0800
From:	walt <w41ter@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.37-ck1

On 01/05/2011 09:19 PM, Con Kolivas wrote:
> These are patches designed to improve system responsiveness and interactivity
> with specific emphasis on the desktop, but suitable to any workload.
>
>
> Apply to 2.6.37:
> http://www.kernel.org/pub/linux/kernel/people/ck/patches/2.6/2.6.37/2.6.37-
> ck1/patch-2.6.37-ck1.bz2

Thanks Con.  I can't build a ck kernel without CONFIG_HOTPLUG_CPU but I don't
know if this is a bug or a feature :)

Your latest sched_bfs.c encloses the subroutine sched_set_stop_task() inside of
an #ifdef CONFIG_HOTPLUG_CPU section.

But the most recent stop_machine.c uses that subroutine twice -- once inside of
an #ifdef CONFIG_HOTPLUG_CPU section, and again outside of that section.

The result is that stop_machine.o still needs sched_set_stop_task() even if
CONFIG_HOTPLUG_CPU is not defined, so the build fails in the link stage with
a missing symbol error.

Thanks for any suggestions/clarifications.

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