[PATCH v3 0/2] sched/fair: optimize and simplify rq

[Chengming Zhou]

Hi,

This version is based on [1], which try to not put cfs_rqs in throttled_hierarchy
on the rq leaf_cfs_rq_list, simplify the leaf_cfs_rq_list maintenance and
optimize the periodic load decay.

Vincent suggested moving throttled_hierarchy() outside list_add_leaf_cfs_rq()
because the task will not be added in this case which is quite misleading.

When do that moving in propagate_entity_cfs_rq(), I found it has problem
with propagation upwards. So add the fix in the first patch to be easier
to backport, please see the details in its commit message.

[1] https://lore.kernel.org/all/20220427160544.40309-1-zhouchengming@xxxxxxxxxxxxx/

Chengming Zhou (2):
  sched/fair: fix propagate during synchronous attach/detach
  sched/fair: optimize and simplify rq leaf_cfs_rq_list

 kernel/sched/fair.c | 87 ++++++++++++---------------------------------
 1 file changed, 22 insertions(+), 65 deletions(-)

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2.36.1