[U-Boot] [PATCH 1/2] common.h: Introduce DEFINE_CACHE_ALIGN_BUFFER

[Mike Frysinger]

On Saturday 07 July 2012 23:08:14 Marek Vasut wrote:
> +/*
> + * DEFINE_CACHE_ALIGN_BUFFER() is similar to ALLOC_CACHE_ALIGN_BUFFER, but it's
> + * purpose is to allow allocating aligned buffers outside of function scope.
> + * Usage of this macro shall be avoided or used with extreme care!
> + */
> +#define DEFINE_CACHE_ALIGN_BUFFER(type, name, size)			\
> +	static char __##name[roundup(size * sizeof(type), ARCH_DMA_MINALIGN)] \
> +			__aligned(ARCH_DMA_MINALIGN);			\
> +									\
> +	static type *name = (type *)__##name;

how is this any different from doing:
	static __u8 foo[1234] __aligned(ARCH_DMA_MINALIGN);
-mike
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