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, 74 insertions, 0 deletions

diff --git a/tools/include/nolibc/fcntl.h b/tools/include/nolibc/fcntl.h
new file mode 100644
index 000000000..d4b6af60d
--- /dev/null
+++ b/tools/include/nolibc/fcntl.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * fcntl definition for NOLIBC
+ * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
+ */
+
+/* make sure to include all global symbols */
+#include "nolibc.h"
+
+#ifndef _NOLIBC_FCNTL_H
+#define _NOLIBC_FCNTL_H
+
+#include "arch.h"
+#include "types.h"
+#include "sys.h"
+
+#define __nolibc_open_flags(_flags) ((_flags) | O_LARGEFILE)
+
+#define __nolibc_open_mode(_flags)							\
+({											\
+	mode_t _mode;									\
+	va_list args;									\
+											\
+	va_start(args, (_flags));							\
+	_mode = va_arg(args, mode_t);							\
+	va_end(args);									\
+											\
+	_mode;										\
+})
+
+/*
+ * int openat(int dirfd, const char *path, int flags[, mode_t mode]);
+ */
+
+static __attribute__((unused))
+int _sys_openat(int dirfd, const char *path, int flags, mode_t mode)
+{
+	return __nolibc_syscall4(__NR_openat, dirfd, path, flags, mode);
+}
+
+static __attribute__((unused))
+int openat(int dirfd, const char *path, int flags, ...)
+{
+	return __sysret(_sys_openat(dirfd, path, __nolibc_open_flags(flags),
+						 __nolibc_open_mode(flags)));
+}
+
+/*
+ * int open(const char *path, int flags[, mode_t mode]);
+ */
+
+static __attribute__((unused))
+int _sys_open(const char *path, int flags, mode_t mode)
+{
+	return __nolibc_syscall4(__NR_openat, AT_FDCWD, path, flags, mode);
+}
+
+static __attribute__((unused))
+int open(const char *path, int flags, ...)
+{
+	return __sysret(_sys_open(path, __nolibc_open_flags(flags), __nolibc_open_mode(flags)));
+}
+
+/*
+ * int creat(const char *path, mode_t mode);
+ */
+
+static __attribute__((unused))
+int creat(const char *path, mode_t mode)
+{
+	return open(path, O_CREAT | O_WRONLY | O_TRUNC, mode);
+}
+
+#endif /* _NOLIBC_FCNTL_H */