[PATCH] Fix arch/i386/kernel/nmi.c - 'unknown_nmi_panic_callback' declared 'static' but never defined warning

[PATCH] Fix arch/i386/kernel/nmi.c - 'unknown_nmi_panic_callback' declared 'static' but never defined warning

[Gabriel C]

Hi,

I get this warning when CONFIG_SYSCTL is not set :

...

arch/i386/kernel/nmi.c:52: warning: 'unknown_nmi_panic_callback' declared 'static' but never defined

...

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>

---

diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 03b7f55..cf11121 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -49,8 +49,9 @@ static unsigned int nmi_hz = HZ;
 static DEFINE_PER_CPU(short, wd_enabled);
 
 /* local prototypes */
+#ifdef CONFIG_SYSCTL
 static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu);
-
+#endif
 static int endflag __initdata = 0;
 
 #ifdef CONFIG_SMP

Re: [PATCH] Fix arch/i386/kernel/nmi.c - 'unknown_nmi_panic_callback' declared 'static' but never defined warning

[Andrew Morton]

On Sun, 22 Jul 2007 21:20:38 +0200 Gabriel C <nix.or.die@googlemail.com> wrote:

> I get this warning when CONFIG_SYSCTL is not set :
> 
> ...
> 
> arch/i386/kernel/nmi.c:52: warning: 'unknown_nmi_panic_callback' declared 'static' but never defined
> 
> ...
> 
> Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
> 
> ---
> 
> diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
> index 03b7f55..cf11121 100644
> --- a/arch/i386/kernel/nmi.c
> +++ b/arch/i386/kernel/nmi.c
> @@ -49,8 +49,9 @@ static unsigned int nmi_hz = HZ;
>  static DEFINE_PER_CPU(short, wd_enabled);
>  
>  /* local prototypes */
> +#ifdef CONFIG_SYSCTL
>  static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu);
> -
> +#endif
>  static int endflag __initdata = 0;

guys, please take a closer look at the code which you're changing?  We can
obviously move do_nmi_callback() down to above
__trigger_all_cpu_backtrace() and then do away with this declaration
altogether.

Re: Fwd: [PATCH] Fix arch/i386/kernel/nmi.c - 'unknown_nmi_panic_callback' declared 'static' but never defined warning

[Gabriel C]

Gabriel C wrote:
> ---------- Forwarded message ----------
> From: Andrew Morton <akpm@linux-foundation.org>
> Date: 25.07.2007 03:36
> Subject: Re: [PATCH] Fix arch/i386/kernel/nmi.c -
> 'unknown_nmi_panic_callback' declared 'static' but never defined warning
> To: Gabriel C <nix.or.die@googlemail.com>
> Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Ingo Molnar <
> mingo@redhat.com>, Andi Kleen <ak@suse.de>
> 
> On Sun, 22 Jul 2007 21:20:38 +0200 Gabriel C <nix.or.die@googlemail.com>
> wrote:
> 
>> I get this warning when CONFIG_SYSCTL is not set :
>>
>> ...
>>
>> arch/i386/kernel/nmi.c:52: warning: 'unknown_nmi_panic_callback' declared
> 'static' but never defined
>> ...
>>
>> Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
>>
>> ---
>>
>> diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
>> index 03b7f55..cf11121 100644
>> --- a/arch/i386/kernel/nmi.c
>> +++ b/arch/i386/kernel/nmi.c
>> @@ -49,8 +49,9 @@ static unsigned int nmi_hz = HZ;
>>  static DEFINE_PER_CPU(short, wd_enabled);
>>
>>  /* local prototypes */
>> +#ifdef CONFIG_SYSCTL
>>  static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu);
>> -
>> +#endif
>>  static int endflag __initdata = 0;
> 
> guys, please take a closer look at the code which you're changing?  We can
> obviously move do_nmi_callback() down to above
> __trigger_all_cpu_backtrace() and then do away with this declaration
> altogether.
> 

I will try to do it better next time , sorry.

Oh and I just realized the fix ( whatever it will be at least ) need be done for arch/x86_64/kernel/nmi.c too.


Regards,

Gabriel