Re: [PATCH V4] powerpc: Implement {cmp}xchg for u8 and u16
From: Peter Zijlstra <peterz@infradead.org>
Date: 2016-04-28 07:59:23
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On Wed, Apr 27, 2016 at 05:16:45PM +0800, Pan Xinhui wrote:
From: Pan Xinhui <redacted>
Implement xchg{u8,u16}{local,relaxed}, and
cmpxchg{u8,u16}{,local,acquire,relaxed}.
It works on all ppc.
remove volatile of first parameter in __cmpxchg_local and __cmpxchg
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Pan Xinhui <redacted>Generally has the right shape; and I trust others to double check the ppc-asm minutia. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>