Re: [PATCH] powerpc: Align hot loops of memset() and backwards_memcpy()
From: Christophe Leroy <hidden>
Date: 2016-08-04 07:49:12
Le 04/08/2016 à 08:53, Anton Blanchard a écrit :
From: Anton Blanchard <redacted> 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 <redacted>
Shouldn't this patch be titled powerpc/64, as powerpc32 has a different memset() ? Christophe
quoted hunk ↗ jump to hunk
--- 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)