MIPS: barrier: Clean up __sync() definition

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Implement __sync() using the new __SYNC() infrastructure, which will
take care of not emitting an instruction for old R3k CPUs that don't
support it. The only behavioral difference is that __sync() will now
provide a compiler barrier on these old CPUs, but that seems like
reasonable behavior anyway.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-kernel@vger.kernel.org

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Paul Burton 2019-10-01 21:53:13 +00:00

parent 5c12a6eff6

commit fe0065e562

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1 changed files with 4 additions and 14 deletions

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arch/mips/include/asm/barrier.h

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