Re: [PATCH V2] powerpc: Implement {cmp}xchg for u8 and u16

2016-04-19 Thread Pan Xinhui
Hello, boqun On 2016年04月19日 17:18, Boqun Feng wrote: > Hi Xinhui, > > On Tue, Apr 19, 2016 at 02:29:34PM +0800, Pan Xinhui wrote: >> From: Pan Xinhui >> >> Implement xchg{u8,u16}{local,relaxed}, and >> cmpxchg{u8,u16}{,local,acquire,relaxed}. >> >> It works on all ppc. >> > > Nice work! > tha

Re: [PATCH V2] powerpc: Implement {cmp}xchg for u8 and u16

2016-04-19 Thread Boqun Feng
Hi Xinhui, On Tue, Apr 19, 2016 at 02:29:34PM +0800, Pan Xinhui wrote: > From: Pan Xinhui > > Implement xchg{u8,u16}{local,relaxed}, and > cmpxchg{u8,u16}{,local,acquire,relaxed}. > > It works on all ppc. > Nice work! AFAICT, your work doesn't depend on anything that ppc-specific, right? So

[PATCH V2] powerpc: Implement {cmp}xchg for u8 and u16

2016-04-18 Thread Pan Xinhui
From: Pan Xinhui Implement xchg{u8,u16}{local,relaxed}, and cmpxchg{u8,u16}{,local,acquire,relaxed}. It works on all ppc. Suggested-by: Peter Zijlstra (Intel) Signed-off-by: Pan Xinhui --- change from V1: rework totally. --- arch/powerpc/include/asm/cmpxchg.h | 83 +++