Re: [PATCH][nf-next] netfilter: replace modulo operation with bitwise AND

[Florian Westphal <fw@xxxxxxxxx>]

Li RongQing <lirongqing@xxxxxxxxx> wrote:
> CONNTRACK_LOCKS is 1024 and power of 2, so modulo operations
> can be replaced with AND (CONNTRACK_LOCKS - 1)
> 
> and bitwise AND operation is quicker than module operation

Uh.  What kind of compiler doesn't figure that out?!

I would prefer to keep it as-is and let compiler do the optimization.