Re: [PATCH] include/linux/etherdevice.h, kernel 2.6.14

From: Andreas Schwab
Date: Sun Oct 30 2005 - 05:46:37 EST


"J.A. Magallon" <jamagallon@xxxxxxx> writes:

> Just for curiosity, could you both benchmark this also:
>
> int is_zero_ether_addr0(const unsigned char *addr)
> {
> return !(((unsigned long *)addr)[0] | ((unsigned short*)addr)[2]);
> }

It's probably slower when addr is unaligned, especially when unaligned
accesses need to be emulated.

Andreas.

--
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
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