linux-kernel - Re: [patch] export percpu cpuacct cgroup stats

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Message-ID: <493C776F.9080005@cn.fujitsu.com>
Date:	Mon, 08 Dec 2008 09:25:03 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ken Chen <kenchen@...gle.com>
CC:	Paul Menage <menage@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch] export percpu cpuacct cgroup stats

Ken Chen wrote:
> On Thu, Dec 4, 2008 at 11:54 PM, Li Zefan <lizf@...fujitsu.com> wrote:
>>> +             seq_printf(m, "%llu ", percpu);
>> Should be:
>> +               seq_printf(m, "%llu ", (unsigned long long)percpu);
>>
>> Otherwsise:
>> kernel/sched.c: In function 'cpuacct_percpu_seq_read':
>> kernel/sched.c:9359: warning: format '%llu' expects type 'long long unsigned int',
>> but argument 3 has type 'u64'
> 
> I'm curious what compiler and CPU arch target are you using that cause
> compiler to spit out this warning message?  On x86_64 u64 is unsigned
> long long and gcc v4.2.4 doesn't give such warning.
> 

I tried it on IA64, and gcc version is 4.1.2.

On IA64, u64 is unsigned long.

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