From: Jiri Benc <[email protected]>
Date: Fri, 22 Apr 2016 12:40:02 +0200
> Commit 751a587ac9f9 ("route: fix breakage after moving lwtunnel state")
> moved lwtstate to the end of dst_entry for 32bit archs. This makes it share
> the cacheline with __refcnt which had an unkown effect on performance. For
> this reason, the pointer was kept in place for 64bit archs.
>
> However, later performance measurements showed this is of no concern. It
> turns out that every performance sensitive path that accesses lwtstate
> accesses also struct rtable or struct rt6_info which share the same cache
> line.
>
> Thus, to get rid of a few #ifdefs, move the field to the end of the struct
> also for 64bit.
>
> Signed-off-by: Jiri Benc <[email protected]>
Fair enough, applied, thanks Jiri.
