From: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
Date: Sat, 12 Aug 2017 04:08:33 -0700
> @@ -1830,7 +1830,7 @@ static struct sk_buff *i40e_construct_skb(struct
> i40e_ring *rx_ring,
> /* prefetch first cache line of first page */
> prefetch(xdp->data);
> #if L1_CACHE_BYTES < 128
> - prefetch(xdp->data + L1_CACHE_BYTES);
> + prefetch((void *)(xdp->data + L1_CACHE_BYTES));
> #endif
This cast seems unnecessary:
[davem@localhost net]$ cat x.c
extern void foo(const void *x);
void bar(void *x)
{
foo(x);
}
[davem@localhost net]$ gcc -Wall -O2 -c -o x.o x.c
[davem@localhost net]$
