tree a94b6a3d2456800197d67effa2677d426d00d31d
parent a5c21dcefa1c3d759457a604b3cfc4af29c8713f
author Will Deacon <will.deacon@arm.com> 1386870022 +0000
committer Linus Torvalds <torvalds@linux-foundation.org> 1386873541 -0800

word-at-a-time: provide generic big-endian zero_bytemask implementation

Whilst architectures may be able to do better than this (which they can,
by simply defining their own macro), this is a generic stab at a
zero_bytemask implementation for the asm-generic, big-endian
word-at-a-time implementation.

On arm64, a clz instruction is used to implement the fls efficiently.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>