From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 19 Aug 2013 13:22:57 +0000 (+0200)
Subject: sched/fair: Shrink sg_lb_stats and play memset games
X-Git-Tag: v3.12-rc1~167^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=147c5fc2bad780d8093b547f2baa204e78107faf;p=pandora-kernel.git

sched/fair: Shrink sg_lb_stats and play memset games

We can shrink sg_lb_stats because rq::nr_running is an unsigned int
and cpu numbers are 'int'

Before:
  sgs:        /* size: 72, cachelines: 2, members: 10 */
  sds:        /* size: 184, cachelines: 3, members: 7 */

After:
  sgs:        /* size: 56, cachelines: 1, members: 10 */
  sds:        /* size: 152, cachelines: 3, members: 7 */

Further we can avoid clearing all of sds since we do a total
clear/assignment of sg_stats in update_sg_lb_stats() with exception of
busiest_stat.avg_load which is referenced in update_sd_pick_busiest().

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-0klzmz9okll8wc0nsudguc9p@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

Reading git-diff-tree failed