diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-19 16:52:48 +0100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-19 16:52:48 +0100 |
commit | 7f2de8171ddf28fdb2ca7f9a683ee1207849f718 (patch) | |
tree | d89da981ac762de3fd32e1c08ddc8041f3c37519 /scripts | |
parent | blk: avoid divide-by-zero with zero discard granularity (diff) | |
parent | byteorder: allow arch to opt to use GCC intrinsics for byteswapping (diff) | |
download | linux-7f2de8171ddf28fdb2ca7f9a683ee1207849f718.tar.xz linux-7f2de8171ddf28fdb2ca7f9a683ee1207849f718.zip |
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
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions