mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
![]() On 64-bit systems, writing/reading one u64 is faster than two u32s even when they're are adjacent in a struct. The compilers won't guarantee they will combine those; I observed both successful and unsuccessful attempts with both GCC and Clang, and it's not easy to say what it depends on. There's a few places in libeth_xdp winning up to several percent from combined access (both performance and object code size, especially when unrolling). Add __LIBETH_WORD_ACCESS and use it there on LE. Drivers are free to optimize HW-specific callbacks under the same definition. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
||
---|---|---|
.. | ||
cache.h | ||
rx.h | ||
tx.h | ||
types.h | ||
xdp.h | ||
xsk.h |