Re: [PATCH 1/2] asm-generic: add __WARN() to bug.h

From: David Rientjes
Date: Wed Nov 14 2012 - 20:28:24 EST


On Wed, 14 Nov 2012, Randy Dunlap wrote:

> --- linux-next-20121114.orig/include/asm-generic/bug.h
> +++ linux-next-20121114/include/asm-generic/bug.h
> @@ -129,6 +129,10 @@ extern void warn_slowpath_null(const cha
> })
> #endif
>
> +#ifndef __WARN
> +#define __WARN() do {} while (0)
> +#endif
> +
> #define WARN_TAINT(condition, taint, format...) WARN_ON(condition)
>
> #endif

__WARN() isn't supposed to be used by generic code, though. The
mm/balloon_compaction.c error should be resolved by
mm-introduce-a-common-interface-for-balloon-pages-mobility-fix-fix-fix.patch
added to -mm today. It converts the __WARN() there into WARN_ON(1) which
is defined appropriately for CONFIG_BUG=n.
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