Re: [PATCH 2/3] sched: Fix asymmetric scheduling for POWER7

2013-10-22 Thread Peter Zijlstra
On Mon, Oct 21, 2013 at 05:14:52PM +0530, Vaidyanathan Srinivasan wrote: > kernel/sched/fair.c |4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 12f0eab..828ed97 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched

Re: [PATCH 2/3] sched: Fix asymmetric scheduling for POWER7

2013-10-21 Thread Michael Neuling
Vaidyanathan Srinivasan wrote: > Asymmetric scheduling within a core is a scheduler loadbalancing > feature that is triggered when SD_ASYM_PACKING flag is set. The goal > for the load balancer is to move tasks to lower order idle SMT threads > within a core on a POWER7 system. > > In nohz_kick_

[PATCH 2/3] sched: Fix asymmetric scheduling for POWER7

2013-10-21 Thread Vaidyanathan Srinivasan
Asymmetric scheduling within a core is a scheduler loadbalancing feature that is triggered when SD_ASYM_PACKING flag is set. The goal for the load balancer is to move tasks to lower order idle SMT threads within a core on a POWER7 system. In nohz_kick_needed(), we intend to check if our sched dom