[PATCH 19/33] cpuset: Propagate cpuset isolation update to timers through housekeeping

[Frederic Weisbecker]

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 <frederic at kernel.org>
---
 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 ea9925652d99..12a47922b7ce 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -1487,9 +1487,6 @@ 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 2f4f184cef2b..61580023cf9d 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c
@@ -147,9 +147,13 @@ 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;
-- 
2.51.1