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| author | Waiman Long <longman@redhat.com> | 2025-11-04 23:38:45 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-11-05 07:00:33 -1000 |
| commit | 103b08709e8a59876980a8edddf4e68f3a23e34e (patch) | |
| tree | eeee3f560557e25e65844a4678fe383bab876504 /scripts/clang-tools/gen_compile_commands.py | |
| parent | 55939cf28a48dad27d6906e57d3b45905bb0d001 (diff) | |
cgroup/cpuset: Fail if isolated and nohz_full don't leave any housekeeping
Currently the user can set up isolated cpus via cpuset and nohz_full in
such a way that leaves no housekeeping CPU (i.e. no CPU that is neither
domain isolated nor nohz full). This can be a problem for other
subsystems (e.g. the timer wheel imgration).
Prevent this configuration by blocking any assignation that would cause
the union of domain isolated cpus and nohz_full to covers all CPUs.
[longman: Remove isolated_cpus_should_update() and rewrite the checking
in update_prstate() and update_parent_effective_cpumask()]
Originally-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Chen Ridong <chenridong@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'scripts/clang-tools/gen_compile_commands.py')
0 files changed, 0 insertions, 0 deletions