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, 50 insertions, 0 deletions

diff --git a/tools/include/nolibc/sched.h b/tools/include/nolibc/sched.h
new file mode 100644
index 000000000..7a5f6d948
--- /dev/null
+++ b/tools/include/nolibc/sched.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * sched function definitions for NOLIBC
+ * Copyright (C) 2025 Thomas Weißschuh <linux@weissschuh.net>
+ */
+
+/* make sure to include all global symbols */
+#include "nolibc.h"
+
+#ifndef _NOLIBC_SCHED_H
+#define _NOLIBC_SCHED_H
+
+#include "sys.h"
+
+#include <linux/sched.h>
+
+/*
+ * int setns(int fd, int nstype);
+ */
+
+static __attribute__((unused))
+int _sys_setns(int fd, int nstype)
+{
+	return __nolibc_syscall2(__NR_setns, fd, nstype);
+}
+
+static __attribute__((unused))
+int setns(int fd, int nstype)
+{
+	return __sysret(_sys_setns(fd, nstype));
+}
+
+
+/*
+ * int unshare(int flags);
+ */
+
+static __attribute__((unused))
+int _sys_unshare(int flags)
+{
+	return __nolibc_syscall1(__NR_unshare, flags);
+}
+
+static __attribute__((unused))
+int unshare(int flags)
+{
+	return __sysret(_sys_unshare(flags));
+}
+
+#endif /* _NOLIBC_SCHED_H */