From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 19 Dec 2012 15:52:48 +0000 (-0800)
Subject: Merge tag 'byteswap-for-linus-20121219' of git://git.infradead.org/users/dwmw2/byteswap
X-Git-Tag: v5.15~21011
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7f2de8171ddf28fdb2ca7f9a683ee1207849f718;p=platform%2Fkernel%2Flinux-starfive.git

Merge tag 'byteswap-for-linus-20121219' of git://git.infradead.org/users/dwmw2/byteswap

Pull preparatory gcc intrisics bswap patch from David Woodhouse:
 "This single patch is effectively a no-op for now.  It enables
  architectures to opt in to using GCC's __builtin_bswapXX() intrinsics
  for byteswapping, and if we merge this now then the architecture
  maintainers can enable it for their arch during the next cycle without
  dependency issues.

  It's worth making it a par-arch opt-in, because although in *theory*
  the compiler should never do worse than hand-coded assembler (and of
  course it also ought to do a lot better on platforms like Atom and
  PowerPC which have load-and-swap or store-and-swap instructions), that
  isn't always the case.  See

     http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46453

  for example."

* tag 'byteswap-for-linus-20121219' of git://git.infradead.org/users/dwmw2/byteswap:
  byteorder: allow arch to opt to use GCC intrinsics for byteswapping
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7f2de8171ddf28fdb2ca7f9a683ee1207849f718