tree d89da981ac762de3fd32e1c08ddc8041f3c37519
parent 59771079c18c44e39106f0f30054025acafadb41
parent cf66bb93e0f75e0a4ba1ec070692618fa028e994
author Linus Torvalds <torvalds@linux-foundation.org> 1355932368 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1355932368 -0800
mergetag object cf66bb93e0f75e0a4ba1ec070692618fa028e994
 type commit
 tag byteswap-for-linus-20121219
 tagger David Woodhouse <David.Woodhouse@intel.com> 1355922181 +0000
 
 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.
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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