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[BYTEORDER]: Document alignment and byteorder macros
This patch comments the fact that although passing le64_to_cpup et al. is within the intended use of the byteorder macros, using get_unaligned is the recommended way to go. Signed-off-by: Ed L. Cashin <ecashin@coraid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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* linux/byteorder_generic.h
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* Generic Byte-reordering support
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*
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* The "... p" macros, like le64_to_cpup, can be used with pointers
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* to unaligned data, but there will be a performance penalty on
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* some architectures. Use get_unaligned for unaligned data.
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*
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* Francois-Rene Rideau <fare@tunes.org> 19970707
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* gathered all the good ideas from all asm-foo/byteorder.h into one file,
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* cleaned them up.
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