linux-kernel - Re: [PATCH 1/5] sched, rt: move .switched_from out of the scope of CONFIG

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Date:	Sat, 28 Dec 2013 17:37:32 +0800
From:	Zhi Yong Wu <zwu.kernel@...il.com>
To:	Kirill Tkhai <tkhai@...dex.ru>
Cc:	mingo@...hat.com, peterz@...radead.org,
	linux-kernel mlist <linux-kernel@...r.kernel.org>,
	Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
Subject: Re: [PATCH 1/5] sched, rt: move .switched_from out of the scope of CONFIG_SMP

On Sat, Dec 28, 2013 at 5:19 PM, Kirill Tkhai <tkhai@...dex.ru> wrote:
> On Пт, дек 27, 2013 at 07:41:00 +0800, Zhi Yong Wu wrote:
>> From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
>>
>> .switched_from shouldn't be initialized in the scope of CONFIG_SMP,
>> so this patch is trying to move it out.
>>
>> Signed-off-by: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
>> ---
>>  kernel/sched/rt.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
>> index 1c40655..f34d41b 100644
>> --- a/kernel/sched/rt.c
>> +++ b/kernel/sched/rt.c
>> @@ -2002,9 +2002,9 @@ const struct sched_class rt_sched_class = {
>>       .pre_schedule           = pre_schedule_rt,
>>       .post_schedule          = post_schedule_rt,
>>       .task_woken             = task_woken_rt,
>> -     .switched_from          = switched_from_rt,
>>  #endif
>>
>> +     .switched_from          = switched_from_rt,
>>       .set_curr_task          = set_curr_task_rt,
>>       .task_tick              = task_tick_rt,
>
> This will not be compilable in !SMP mode because the body of switched_from_rt()
> is still under CONFIG_SMP define.
How about also removing its body out?
>
> Kirill



-- 
Regards,

Zhi Yong Wu
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