arm64: cmpxchg: implement cmpxchg64_relaxed

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This patch introduces cmpxchg64_relaxed for arm64 using the existing
cmpxchg_local macro, which performs a cmpxchg operation (up to 64 bits)
without barrier semantics.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Will Deacon 2013-10-09 15:54:28 +01:00 • committed by Catalin Marinas

parent 5686b06cea

commit cf10b79a7d

1 changed files with 2 additions and 0 deletions

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arch/arm64/include/asm/cmpxchg.h

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