workqueue: Avoid using isolated cpus' timers on queue_delayed_work (!3781) · Merge requests · Red Hat / centos-stream / src / kernel / centos-stream-9 · GitLab

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Leonardo Brás requested to merge LeoBras/centos-stream-9:RHEL-20254 into main Feb 22, 2024

JIRA: https://issues.redhat.com/browse/RHEL-20254

Tested: oslat test on host & guest VM

Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git/

Improves latency for host & guest RT tasks running on isolated CPUs.

Avoid usage of isolated CPU to handle timer interrupts on schedule_delayed_work().

Signed-off-by: Leonardo Bras leobras@redhat.com

Edited Feb 22, 2024 by Leonardo Brás