Messages in this thread | | | From | Yicong Yang <> | Subject | [PATCH 0/2] sched/fair: Wake task within the cluster when possible | Date | Wed, 15 Dec 2021 12:11:47 +0800 |
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This is the follow-up work to support cluster scheduler. Previously we have added cluster level in the scheduler for both ARM64[1] and X86[2] to support load balance between clusters to bring more memory bandwidth and decrease cache contention. This patchset, on the other hand, takes care of wake-up path by giving CPUs within the same cluster a try before scanning the whole LLC to benefit those tasks communicating with each other.
[1] 778c558f49a2 ("sched: Add cluster scheduler level in core and related Kconfig for ARM64") [2] 66558b730f25 ("sched: Add cluster scheduler level for x86")
Barry Song (2): sched: Add per_cpu cluster domain info and cpus_share_cluster API sched/fair: Scan cluster before scanning LLC in wake-up path
include/linux/sched/sd_flags.h | 5 ++++ include/linux/sched/topology.h | 8 +++++- kernel/sched/core.c | 12 +++++++++ kernel/sched/fair.c | 46 +++++++++++++++++++++++++++++++--- kernel/sched/sched.h | 2 ++ kernel/sched/topology.c | 9 +++++++ 6 files changed, 77 insertions(+), 5 deletions(-)
-- 2.33.0
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