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Waiman Long d6e21bf76e cgroup/cpuset: Fix load balance state in update_partition_sd_lb()

[ Upstream commit 6fcdb0183bf024a70abccb0439321c25891c708d ]

Commit a86ce68078 ("cgroup/cpuset: Extract out CS_CPU_EXCLUSIVE
& CS_SCHED_LOAD_BALANCE handling") adds a new helper function
update_partition_sd_lb() to update the load balance state of the
cpuset. However the new load balance is determined by just looking at
whether the cpuset is a valid isolated partition root or not.  That is
not enough if the cpuset is not a valid partition root but its parent
is in the isolated state (load balance off). Update the function to
set the new state to be the same as its parent in this case like what
has been done in commit c8c926200c ("cgroup/cpuset: Inherit parent's
load balance state in v2").

Fixes: a86ce68078 ("cgroup/cpuset: Extract out CS_CPU_EXCLUSIVE & CS_SCHED_LOAD_BALANCE handling")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-11-20 11:58:53 +01:00

cgroup-internal.h

cgroup: make cgroup_is_threaded() and cgroup_is_thread_root() static

2023-06-05 10:31:41 -10:00

cgroup-v1.c

cgroup: Remove duplicates in cgroup v1 tasks file

2023-10-09 06:42:05 -10:00

cgroup.c

cgroup: fix build when CGROUP_SCHED is not enabled

2023-09-02 08:27:17 -07:00

cpuset.c

cgroup/cpuset: Fix load balance state in update_partition_sd_lb()