While testing cpusets on asymmetric CPU capacity systems I realized that
the admission control, which kicks in when the cpumask of a cpuset is
about to be changed, is not capacity-aware. [PATCH 2/3] addresses this
issue.
Overview:
[PATCH 1/3] - Not part of the DL related changes but here for
convenience : Inline helper function around
static_branch_unlikely(&sched_asym_cpucapacity)
[PATCH 2/3] - Make dl_cpuset_cpumask_can_shrink() capacity-aware.
[PATCH 3/3] - Save a multiplication in dl_task_fits_capacity() by using
already maintained dl_density.
v1->v2:
[PATCH 3/3] - s/SCHED_CAPACITY_SHIFT/(BW_SHIFT - SCHED_CAPACITY_SHIFT)
(Vincent Guittot)
Dietmar Eggemann (3):
sched: Introduce sched_asym_cpucap_active()
sched/deadline: Make dl_cpuset_cpumask_can_shrink() capacity-aware
sched/deadline: Use sched_dl_entity's dl_density in
dl_task_fits_capacity()
kernel/sched/cpudeadline.c | 2 +-
kernel/sched/deadline.c | 28 +++++++++++++---------------
kernel/sched/fair.c | 8 ++++----
kernel/sched/rt.c | 4 ++--
kernel/sched/sched.h | 35 ++++++++++++++++++++---------------
5 files changed, 40 insertions(+), 37 deletions(-)
--
2.25.1