From f5c145ae4f26c25b853f059f1aa14a46f4e9f1ab Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 22 Dec 2025 00:55:49 +0100 Subject: [PATCH] cpuset: Propagate cpuset isolation update to timers through housekeeping Until now, cpuset would propagate isolated partition changes to timer migration so that unbound timers don't get migrated to isolated CPUs. Since housekeeping now centralizes, synchronize and propagates isolation cpumask changes, perform the work from that subsystem for consolidation and consistency purposes. Signed-off-by: Frederic Weisbecker --- kernel/cgroup/cpuset.c | 3 --- kernel/sched/isolation.c | 4 ++++ 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 6309ec5d7b2a..080fa2fb10c7 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -1485,9 +1485,6 @@ static void update_isolation_cpumasks(void) ret = housekeeping_update(isolated_cpus); WARN_ON_ONCE(ret < 0); - ret = tmigr_isolated_exclude_cpumask(isolated_cpus); - WARN_ON_ONCE(ret < 0); - isolated_cpus_updating = false; } diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 5bcb6d760f20..a30d19b641f7 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -149,9 +149,13 @@ int housekeeping_update(struct cpumask *isol_mask) pci_probe_flush_workqueue(); mem_cgroup_flush_workqueue(); vmstat_flush_workqueue(); + err = workqueue_unbound_housekeeping_update(housekeeping_cpumask(HK_TYPE_DOMAIN)); WARN_ON_ONCE(err < 0); + err = tmigr_isolated_exclude_cpumask(isol_mask); + WARN_ON_ONCE(err < 0); + kfree(old); return 0;