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

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Message-ID: <BLU437-SMTP64B481445D8E303ABE0D4D80550@phx.gbl>
Date:	Sun, 6 Sep 2015 12:01:10 +0800
From:	Wanpeng Li <wanpeng.li@...mail.com>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>
CC:	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

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
kernel/sched/core.c:2116: error: type defaults to ‘int’ in declaration 
of ‘DEFINE_STATIC_KEY_FALSE’
kernel/sched/core.c:2116: warning: parameter names (without types) in 
function declaration
kernel/sched/core.c: In function ‘set_numabalancing_state’:
kernel/sched/core.c:2123: error: implicit declaration of function 
‘static_branch_enable’
kernel/sched/core.c:2125: error: implicit declaration of function 
‘static_branch_disable’
kernel/sched/core.c: In function ‘sysctl_numa_balancing’:
kernel/sched/core.c:2134: error: implicit declaration of function 
‘static_branch_likely’
make[1]: *** [kernel/sched/core.o] Error 1
make: *** [kernel/sched/] Error 2

Regards,
Wanpeng Li
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