On 2016年04月28日 15:59, Peter Zijlstra wrote:

On Wed, Apr 27, 2016 at 05:16:45PM +0800, Pan Xinhui wrote:

quoted

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>

thanks!