Andi, On Mon, Nov 21, 2011 at 10:17:59PM +0800, Andi Kleen wrote: > > +static unsigned long ra_stats[RA_PATTERN_MAX][RA_ACCOUNT_MAX]; > > Why not make it per cpu? That should get the overhead down, probably > even enough that it can be enabled by default. > > BTW I have an older framework to make it really easy to add per > cpu stats counters to debugfs. Will repost, that would simplify > it even more. That's definitely a good facility to have. I would be happy to become its first user :) Thanks, Fengguang -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>