Re: [S390] Use generic bug.

[David Miller]

From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Date: Mon, 5 Mar 2007 23:43:54 +0100

> +	if (__builtin_constant_p(__ret_warn_on)) {	\
> +		if (__ret_warn_on)			\
> +			__EMIT_BUG(BUGFLAG_WARNING);	\

I see we'll have this construct on powerpc, parisc and now s390.

But if it's going to trigger essentially at compile time, I
think it's much better to BUILD_BUG_ON() in this case instead
of counting on the code path to actually run and the user to
notice and report the kernel log message.
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