diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2025-09-30 15:21:33 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2026-02-03 15:23:34 +0100 |
| commit | 29b306c44eb5eefdfa02d6ba1205f479f82fb088 (patch) | |
| tree | b8122840ace41270d158f23cadc6e22a466f8b87 /kernel | |
| parent | ce84ad5e994aea5d41ff47135a71439ad4f54005 (diff) | |
PCI: Flush PCI probe workqueue on cpuset isolated partition change
The HK_TYPE_DOMAIN housekeeping cpumask is now modifiable at runtime. In
order to synchronize against PCI probe works and make sure that no
asynchronous probing is still pending or executing on a newly isolated
CPU, the housekeeping subsystem must flush the PCI probe works.
However the PCI probe works can't be flushed easily since they are
queued to the main per-CPU workqueue pool.
Solve this with creating a PCI probe-specific pool and provide and use
the appropriate flushing API.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Marco Crivellari <marco.crivellari@suse.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Waiman Long <longman@redhat.com>
Cc: linux-pci@vger.kernel.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/isolation.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 160b3fcab209..1e4c3154b0a4 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -8,6 +8,7 @@ * */ #include <linux/sched/isolation.h> +#include <linux/pci.h> #include "sched.h" enum hk_flags { @@ -144,6 +145,7 @@ int housekeeping_update(struct cpumask *isol_mask) synchronize_rcu(); + pci_probe_flush_workqueue(); mem_cgroup_flush_workqueue(); vmstat_flush_workqueue(); |