linux-kernel - Re: [PATCH] kernel/time/tick-sched.c: fix warning of printk's argument format

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Message-Id: <1255015903.14496.44.camel@falcon>
Date:	Thu, 08 Oct 2009 23:31:43 +0800
From:	Wu Zhangjin <wuzhangjin@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Remis Lima Baima <remis.developer@...glemail.com>,
	Christoph Hellwig <hch@....de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH] kernel/time/tick-sched.c: fix warning of printk's
 argument format

On Thu, 2009-10-08 at 08:03 -0700, Linus Torvalds wrote:
> 
> On Thu, 8 Oct 2009, Wu Zhangjin wrote:
> >
> > This patch will fix the following warning:
> 
> No it won't. It will add a lot of new warnings.
> 
> The thing is, almost all architectures (including x86) have
> 
> 	unsigned int __softirq_pending;
> 
> but then in <asm-generic/hardirq.h> we have
> 
> 	unsigned long __softirq_pending;
> 
> for some unfathomable reason. Quite frankly, I think Arnd just screwed up 
> the "generic" version, and the fix is almost certainly to just make the 
> generic version match all the main architectures. 
> 
> I don't have any architectures using the generic header file, though, so 
> I'm not going to do that change blindly. People who do should look at it 
> (alpha, powerpc and mips look like the only ones that might be 64-bit, but 
> I didn't check very carefully - just grepped for it)
> 
> Added Cc's for some people that have worked on, or used, that generic 
> header file. Is there any possible reason why it is "unsigned long" in 
> that one?
> 

I'm really using a MIPS machine! there is only a "unsigned long"
definition in include/asm-generic/hardirq.h.

Regards,
	Wu Zhangjin

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