[dpdk-dev] [PATCH v6 01/14] eal: introduce atomic exchange operation

[Thomas Monjalon]

22/01/2018 22:48, Stephen Hemminger:
> On Mon, 22 Jan 2018 22:03:02 +0100
> Thomas Monjalon <thomas at monjalon.net> wrote:
> 
> > 22/01/2018 17:56, Stephen Hemminger:
> > > On Mon, 22 Jan 2018 00:50:55 +0100
> > > Thomas Monjalon <thomas at monjalon.net> wrote:
> > >   
> > > > 21/01/2018 20:25, Ferruh Yigit:  
> > > > > On 1/21/2018 6:59 PM, Ferruh Yigit wrote:    
> > > > > > From: Stephen Hemminger <stephen at networkplumber.org>
> > > > > > 
> > > > > > To handle atomic update of link status (64 bit), every driver
> > > > > > was doing its own version using cmpset.
> > > > > > Atomic exchange is a useful primitive in its own right;
> > > > > > therefore make it a EAL routine.
> > > > > > 
> > > > > > Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> > > > > > Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>    
> > > > > Series applied to dpdk-next-net/master, thanks.    
> > > > 
> > > > I need to drop this series when pulling in master,
> > > > because PPC is not supported.
> > > > 
> > > > Chao, please could you help on this feature?
> > > > Thanks  
> > > 
> > > The generic code should work for PPC.  
> > 
> > No, the generic code is inside #ifdef RTE_FORCE_INTRINSICS.
> > PPC does not define RTE_FORCE_INTRINSICS,
> > and ARM could disable it I guess.
> 
> I will add a non intrinsic generic version using cmpset.

OK thanks