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| author | Waiman Long <longman@redhat.com> | 2026-03-31 14:35:22 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-03-31 11:43:25 -1000 |
| commit | 2ab739383113107a1335ce7bcbc93110afb69267 (patch) | |
| tree | 768d1146af5e23cb67edc3c9567c00afce904559 /kernel/workqueue.c | |
| parent | afeaa9f2532d1d8d04803d09ac2d4f7107854f29 (diff) | |
| download | linux-2ab739383113107a1335ce7bcbc93110afb69267.tar.gz linux-2ab739383113107a1335ce7bcbc93110afb69267.zip | |
workqueue: Remove HK_TYPE_WQ from affecting wq_unbound_cpumask
For historical reason, wq_unbound_cpumask is initially set as
intersection of HK_TYPE_DOMAIN, HK_TYPE_WQ and workqueue.unbound_cpus
boot command line option.
At run time, users can update the unbound cpumask via the
/sys/devices/virtual/workqueue/cpumask sysfs file. Creation
and modification of cpuset isolated partitions will also update
wq_unbound_cpumask based on the latest HK_TYPE_DOMAIN cpumask.
The HK_TYPE_WQ cpumask is out of the picture with these runtime updates.
Complete the transition by taking HK_TYPE_WQ out from the workqueue code
and make it depends on HK_TYPE_DOMAIN only from the housekeeping side.
The final goal is to eliminate HK_TYPE_WQ as a housekeeping cpumask type.
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 4f543da2e7c0..18c3fe90daca 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -7081,7 +7081,7 @@ int workqueue_unbound_housekeeping_update(const struct cpumask *hk) /* * If the operation fails, it will fall back to * wq_requested_unbound_cpumask which is initially set to - * (HK_TYPE_WQ ∩ HK_TYPE_DOMAIN) house keeping mask and rewritten + * HK_TYPE_DOMAIN house keeping mask and rewritten * by any subsequent write to workqueue/cpumask sysfs file. */ if (!cpumask_and(cpumask, wq_requested_unbound_cpumask, hk)) @@ -7901,7 +7901,6 @@ void __init workqueue_init_early(void) cpumask_copy(wq_online_cpumask, cpu_online_mask); cpumask_copy(wq_unbound_cpumask, cpu_possible_mask); - restrict_unbound_cpumask("HK_TYPE_WQ", housekeeping_cpumask(HK_TYPE_WQ)); restrict_unbound_cpumask("HK_TYPE_DOMAIN", housekeeping_cpumask(HK_TYPE_DOMAIN)); if (!cpumask_empty(&wq_cmdline_cpumask)) restrict_unbound_cpumask("workqueue.unbound_cpus", &wq_cmdline_cpumask); |