linux-kernel - Re: ia64: replace old cpumask functions with new one

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Message-ID: <4E1C055C.1030103@jp.fujitsu.com>
Date:	Tue, 12 Jul 2011 17:27:08 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	tony.luck@...el.com
CC:	fenghua.yu@...el.com, linux-ia64@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: ia64: replace old cpumask functions with new one

(2011/07/07 6:14), Tony Luck wrote:
> 2011/6/23 KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>:
>> We plan to remove old obsolete cpumask functions and plan to
>> change task->cpus_allowed implementation in future.
> ...
>>  arch/ia64/kernel/smpboot.c              |   56 +++++++++++++++---------------
> 
> I get some new warnings in this file with your patch:
> 
> 
> arch/ia64/kernel/smpboot.c:454: warning: passing argument 2 of
> ‘cpumask_set_cpu’ discards qualifiers from pointer target type
> arch/ia64/kernel/smpboot.c:581: warning: passing argument 1 of
> ‘cpumask_clear’ discards qualifiers from pointer target type
> arch/ia64/kernel/smpboot.c:613: warning: passing argument 2 of
> ‘cpumask_set_cpu’ discards qualifiers from pointer target type
> arch/ia64/kernel/smpboot.c:637: warning: passing argument 2 of
> ‘cpumask_set_cpu’ discards qualifiers from pointer target type
> arch/ia64/kernel/smpboot.c:745: warning: passing argument 2 of
> ‘cpumask_clear_cpu’ discards qualifiers from pointer target type
> 
> Four of the five involve "cpu_callin_mask" which is "volatile", the other is for
> "cpu_present_mask" - not sure what the problem is for this one.

Sorry for the delay. I'm sorry for the annoying you.
But ummm.. I can't understand the author expect which effect by this volatile.
If I am correct, its volatile has no effect. we can simply remove it.

So, I'll respin this.

Thanks.


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