On Wed, Sep 17, 2014 at 03:33:20PM -0700, Dave Hansen wrote: > diff -puN /dev/null kernel/sched/Kconfig > --- /dev/null 2014-04-10 11:28:14.066815724 -0700 > +++ b/kernel/sched/Kconfig 2014-09-17 15:28:58.620622789 -0700 > @@ -0,0 +1,42 @@ > +config ARCH_ENABLE_SCHED_MC > + depends on SMP > + def_bool n > + > +config ARCH_ENABLE_SCHED_BOOK > + depends on SMP > + def_bool n > + > +config ARCH_ENABLE_SCHED_SMT > + depends on SMP > + def_bool n > + > +config SCHED_MC > + bool "Multi-core scheduler support" > + default n if s390 > + default y > + depends on ARCH_ENABLE_SCHED_MC > + help > + Multi-core scheduler support improves the CPU scheduler's decision > + making when dealing with multi-core CPU chips at a cost of slightly > + increased overhead in some places. If unsure say N here. > + > +config SCHED_BOOK > + def_bool y > + prompt "Book scheduler support" > + depends on ARCH_ENABLE_SCHED_BOOK > + select SCHED_MC > + help > + Book scheduler support improves the CPU scheduler's decision making > + when dealing with machines that have several books. > + > + Currenltly only used on s390 which has only a single NUMA node. > + Books are collections of CPUs that are grouped similarly to a NUMA > + node, but without the same memory properites that NUMA nodes have.
Nothing outside of s390 knows about SCHED_BOOK, it doesn't make sense to have that here. > +config SCHED_SMT > + bool "SMT scheduler support" > + depends on ARCH_ENABLE_SCHED_SMT > + help > + Improves the CPU scheduler's decision making when dealing with > + MultiThreading at a cost of slightly increased overhead in some > + places. If unsure say N here. > _ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
