Re: [RFC PATCH] kernel: add byteorder macros with alignment fixups
From: H. Peter Anvin
Date: Thu Mar 20 2008 - 16:08:22 EST
Harvey Harrison wrote:
A common pattern in the kernel (especially networking) is:
le32_to_cpu(get_unaligned((__le32 *)x));
Repeat for various combinations of le/be and 64/32/16 bit. Add
a variant that operates on possibly unaligned pointers to
byteorder/generic.h
This should go in <asm-generic/*> since on some architectures this can
be done significantly faster than the chained pattern, since you can get
the reordering for "free". Thus, architectures should be able to
override the generic.
-hpa
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