linux-kernel - Re: [PATCH] x86: remove printk compiling warning

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Date:	Wed, 07 May 2008 16:27:11 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Shen Feng <shen@...fujitsu.com>
CC:	hpa@...or.com, linux-kernel@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>
Subject: Re: [PATCH] x86: remove printk compiling warning

CC: Randy Dunlap <rdunlap@...otime.net>

Shen Feng wrote:
> Since size is unsigned long, the format string is changed
> from zd to lu.
> 
> Signed-off-by: Shen Feng <shen@...fujitsu.com>
> ---
>  arch/x86/kernel/setup.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index cc6f5eb..c0c68c1 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -95,7 +95,7 @@ void __init setup_per_cpu_areas(void)
> 
>  	/* Copy section for each CPU (we discard the original) */
>  	size = PERCPU_ENOUGH_ROOM;
> -	printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
> +	printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n",
>  			  size);
> 
>  	for_each_possible_cpu(i) {

Let me figure out this.

Commit 0fc5035fc66d26776bebd45c508a9bce3611f388 in linux-next changed
'size' from unsigned long to ssize_t, causing a compile warning, and
then Randy posted a patch to fix it:
	http://marc.info/?l=linux-kernel&m=120958902125650&w=2

But this patch was wrongly merged into mainline, causing the compile warning
you described here.

So we should revert Randy's patch and re-apply it to linux-next ?

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