On 23 May 2016 at 12:58, Morten Rasmussen <morten.rasmus...@arm.com> wrote: > If the system has cpu of different compute capacities (e.g. big.LITTLE) > let affine wakeups be constrained to cpus of the same type.
Can you explain why you don't want wake affine with cpus with different compute capacity ? > > cc: Ingo Molnar <mi...@redhat.com> > cc: Peter Zijlstra <pet...@infradead.org> > > Signed-off-by: Morten Rasmussen <morten.rasmus...@arm.com> > --- > kernel/sched/core.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index d9619a3..558ec4a 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -6410,6 +6410,9 @@ sd_init(struct sched_domain_topology_level *tl, int cpu) > sd->idle_idx = 1; > } > > + if (sd->flags & SD_ASYM_CPUCAPACITY) > + sd->flags &= ~SD_WAKE_AFFINE; > + > sd->private = &tl->data; > > return sd; > -- > 1.9.1 >
