On Wed, 2014-10-29 at 10:42 +0800, Wang, Yalin wrote:
Use the inline function instead of directly indexing the array. This allows some architectures with hardware instructions for bit reversals to eliminate the array.
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On Sun, 2014-10-26 at 23:46 -0700, Joe Perches wrote:
On Mon, 2014-10-27 at 14:37 +0800, Wang, Yalin wrote:
this change add CONFIG_HAVE_ARCH_BITREVERSE config option, so that we can use arm/arm64 rbit instruction to do bitrev operation by hardware.
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I think the most safe way is change byte_rev_table[] to be satic, So that no driver can access it directly, The build error can remind the developer if they use byte_rev_table[] Directly .
You can do that with your later patch, but the existing uses _must_ be converted first so you don't break the build.