[PATCH] x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOG.

[PATCH] x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOG.

[Rakib Mullick]

backtrace_mask has been used under the code context of
ARCH_HAS_NMI_WATCHDOG. So put it into that context.
We were warned by the following warning:

arch/x86/kernel/apic/hw_nmi.c:21: warning: ‘backtrace_mask’ defined but not used


Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
---

diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index cefd694..62f6e1e 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -17,15 +17,16 @@
 #include <linux/nmi.h>
 #include <linux/module.h>

-/* For reliability, we're prepared to waste bits here. */
-static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
-
 u64 hw_nmi_get_sample_period(void)
 {
 	return (u64)(cpu_khz) * 1000 * 60;
 }

 #ifdef ARCH_HAS_NMI_WATCHDOG
+
+/* For reliability, we're prepared to waste bits here. */
+static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
+
 void arch_trigger_all_cpu_backtrace(void)
 {
 	int i;

Re: [PATCH] x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOG.

[Don Zickus]

On Sun, Nov 07, 2010 at 01:41:34PM +0600, Rakib Mullick wrote:
> backtrace_mask has been used under the code context of
> ARCH_HAS_NMI_WATCHDOG. So put it into that context.
> We were warned by the following warning:
> 
> arch/x86/kernel/apic/hw_nmi.c:21: warning: ‘backtrace_mask’ defined but not used

Thanks, I'll pull that into my tree.

Cheers,
Don

> 
> 
> Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
> ---
> 
> diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
> index cefd694..62f6e1e 100644
> --- a/arch/x86/kernel/apic/hw_nmi.c
> +++ b/arch/x86/kernel/apic/hw_nmi.c
> @@ -17,15 +17,16 @@
>  #include <linux/nmi.h>
>  #include <linux/module.h>
> 
> -/* For reliability, we're prepared to waste bits here. */
> -static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
> -
>  u64 hw_nmi_get_sample_period(void)
>  {
>  	return (u64)(cpu_khz) * 1000 * 60;
>  }
> 
>  #ifdef ARCH_HAS_NMI_WATCHDOG
> +
> +/* For reliability, we're prepared to waste bits here. */
> +static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
> +
>  void arch_trigger_all_cpu_backtrace(void)
>  {
>  	int i;
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/