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(parent: e172800) | patch
arm64: rwsem: use asm-generic rwsem implementation
authorWill Deacon <will.deacon@arm.com>
Fri, 14 Mar 2014 17:47:05 +0000 (17:47 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 14 Mar 2014 18:02:09 +0000 (18:02 +0000)
commitc209f79940ac0c75ae8d2f503a2b9d86255e266c
tree206ccdfb1d2afcaffc1e662fc6e487cd6a26a597tree | snapshot (tar.gz zip)
parente172800e5d3162f97d332b3745e3743ce150ec48commit | diff
arm64: rwsem: use asm-generic rwsem implementation

asm-generic offers an atomic-add based rwsem implementation, which
can avoid the need for heavier, spinlock-based synchronisation on the
fast path.

This patch makes use of the optimised implementation for arm64 CPUs.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/Kconfig diff | blob | blame | history
arch/arm64/include/asm/Kbuild diff | blob | blame | history