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

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