linux-kernel - Re: [PATCH] Revert "kernel/stop_machine.c: remove CONFIG

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Message-ID: <56741F45.9080206@ezchip.com>
Date:	Fri, 18 Dec 2015 09:59:17 -0500
From:	Chris Metcalf <cmetcalf@...hip.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] Revert "kernel/stop_machine.c: remove CONFIG_SMP
 dependencies"

On 12/18/2015 05:05 AM, Sudip Mukherjee wrote:
> This reverts commit 64dab25b058c12f935794cb239089303bda7dbc1.
>
> CONFIG_SMP dependency is needed for some arch like tile, tilegx and
> m32r. They use stop_machine() but they donot have HOTPLUG_CPU and as a
> result their builds are failing with "undefined symbol 'stop_machine'".
>
> Cc: Chris Wilson <chris@...is-wilson.co.uk>
> Cc: Ingo Molnar <mingo@...nel.org>
> Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> ---
>
> tile build at:
> https://travis-ci.org/sudipm-mukherjee/parport/jobs/97618549
>
> tilegx build at:
> https://travis-ci.org/sudipm-mukherjee/parport/jobs/97618550
>
> m32r build at:
> https://travis-ci.org/sudipm-mukherjee/parport/jobs/97618542
>
>   kernel/stop_machine.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Chris Metcalf <cmetcalf@...hip.com> [for tile]

-- 
Chris Metcalf, EZChip Semiconductor
http://www.ezchip.com
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