linux-kernel - Re: [PATCH v2 4/4] sched/numa: Convert sched_numa_balancing to a static

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Message-ID: <BLU436-SMTP22151CB2918AB6E3057F86A80540@phx.gbl>
Date:	Mon, 7 Sep 2015 13:21:38 +0800
From:	Wanpeng Li <wanpeng.li@...mail.com>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
CC:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, Rik van Riel <riel@...hat.com>,
	Mel Gorman <mgorman@...e.de>
Subject: Re: [PATCH v2 4/4] sched/numa: Convert sched_numa_balancing to a
 static_branch

On 9/7/15 12:10 PM, Srikar Dronamraju wrote:
> * Wanpeng Li <wanpeng.li@...mail.com> [2015-09-06 12:01:10]:
>
>
> Hi Wanpeng Li,
>
>
>> Hi Srikar,
>> On 8/12/15 12:24 AM, Srikar Dronamraju wrote:
>>> Variable sched_numa_balancing toggles numa_balancing feature. Hence
>>> moving from a simple read mostly variable to a more apt static_branch.
>>>
>>> Suggested-by: Peter Zijlstra <peterz@...radead.org>
>>> Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
>>>
>> This commit breaks Peter's queue:
>>
>> kernel/sched/fair.c: In function ?task_numa_fault?:
>> kernel/sched/fair.c:2072: error: implicit declaration of function
>> ?static_branch_likely?
>> kernel/sched/fair.c: In function ?task_tick_fair?:
>> kernel/sched/fair.c:7867: error: implicit declaration of function
>> ?static_branch_unlikely?
>> make[1]: *** [kernel/sched/fair.o] Error 1
>> make[1]: *** Waiting for unfinished jobs....
>> kernel/sched/core.c:2116: warning: data definition has no type or storage
>> class
> Thanks for reporting.  Can you please confirm if you have the commit
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11276d5306b8e5b438a36bbff855fe792d7eaa61

It seems that the sched/core branch of Peterz's queue doesn't include 
this commit. So your patch should be good.

Regards,
Wanpeng Li
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