Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity

On Mon, Jun 30, 2014 at 06:05:39PM +0200, Vincent Guittot wrote:

• /*
  

•  * If the CPUs share their cache and the src_cpu's capacity is
  

•  * reduced because of other sched_class or IRQs, we trig an
  

•  * active balance to move the task
  

•  */
  

• if ((sd->flags & SD_SHARE_PKG_RESOURCES)
  

•  && ((capacity_orig_of(src_cpu) * 100) > (capacity_of(src_cpu) *
  

• 					sd->imbalance_pct)))
  return 1;
  

Why is this tied to shared caches?