Re: [PATCH] powerpc: Align hot loops of memset() and backwards_memcpy()

[Anton Blanchard <anton@samba.org>]

Hi Christophe,

> > Align the hot loops in our assembly implementation of memset()
> > and backwards_memcpy().
> >
> > backwards_memcpy() is called from tcp_v4_rcv(), so we might
> > want to optimise this a little more.
> >
> > Signed-off-by: Anton Blanchard <anton@samba.org>  
> 
> Shouldn't this patch be titled powerpc/64, as powerpc32 has a
> different memset() ?

Yeah, good point. Michael can you make this change if you choose to
merge it? 

Anton

> > ---
> >  arch/powerpc/lib/mem_64.S | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/powerpc/lib/mem_64.S b/arch/powerpc/lib/mem_64.S
> > index 43435c6..eda7a96 100644
> > --- a/arch/powerpc/lib/mem_64.S
> > +++ b/arch/powerpc/lib/mem_64.S
> > @@ -37,6 +37,7 @@ _GLOBAL(memset)
> >  	clrldi	r5,r5,58
> >  	mtctr	r0
> >  	beq	5f
> > +	.balign 16
> >  4:	std	r4,0(r6)
> >  	std	r4,8(r6)
> >  	std	r4,16(r6)
> > @@ -90,6 +91,7 @@ _GLOBAL(backwards_memcpy)
> >  	andi.	r0,r6,3
> >  	mtctr	r7
> >  	bne	5f
> > +	.balign 16
> >  1:	lwz	r7,-4(r4)
> >  	lwzu	r8,-8(r4)
> >  	stw	r7,-4(r6)
> >  
>