workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/net/dsa/stubs.c b/net/dsa/stubs.c
new file mode 100644
index 000000000..2ed8a6c85
--- /dev/null
+++ b/net/dsa/stubs.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Stubs for DSA functionality called by the core network stack.
+ * These are necessary because CONFIG_NET_DSA can be a module, and built-in
+ * code cannot directly call symbols exported by modules.
+ */
+#include <net/dsa_stubs.h>
+
+const struct dsa_stubs *dsa_stubs;
+EXPORT_SYMBOL_GPL(dsa_stubs);