Barry & Yicong,
I've added this series to allow for run time control of cluster scheduling via /proc/sys/kernel/sched_cluster_enabled.
I've defaulted the setting to off as this is probably the safest option and will encounter the least resistance.
I've also added a SD_CLUSTER flag in patch 2. It may be handy if we want to do any cluster specific scheduling operation in a cluster sched domain.
This could be a follow on after the main patchset is posted. I've tested it on my x86 machine. Wonder if you can test it on your ARM system to make sure it works properly there.
Will appreciate your feedback and review.
Tim Chen (3): sched: Create SDTL_SKIP flag to skip topology level sched: Add SD_CLUSTER topology flag to cluster sched domain sched: Add runtime knob sysctl_sched_cluster_enabled
arch/x86/kernel/smpboot.c | 8 +++++ drivers/base/arch_topology.c | 7 ++++ include/linux/sched/sd_flags.h | 7 ++++ include/linux/sched/sysctl.h | 6 ++++ include/linux/sched/topology.h | 3 +- include/linux/topology.h | 7 ++++ kernel/sched/core.c | 1 + kernel/sched/sched.h | 6 ++++ kernel/sched/topology.c | 58 +++++++++++++++++++++++++++++++++- kernel/sysctl.c | 11 +++++++ 10 files changed, 112 insertions(+), 2 deletions(-)