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, 33 insertions, 0 deletions

diff --git a/arch/arm/tools/syscallnr.sh b/arch/arm/tools/syscallnr.sh
new file mode 100644
index 000000000..9e386770b
--- /dev/null
+++ b/arch/arm/tools/syscallnr.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+in="$1"
+out="$2"
+align=1
+
+fileguard=_ASM_ARM_`basename "$out" | sed \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+    -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+" "$in" | sort -n | tail -n1 | (
+    echo "#ifndef ${fileguard}
+#define ${fileguard} 1
+
+/*
+ * This needs to be greater than __NR_last_syscall+1 in order to account
+ * for the padding in the syscall table.
+ */
+"
+
+    while read nr abi name entry; do
+        nr=$(($nr + 1))
+        while [ "$(($nr / (256 * $align) ))" -gt 0 ]; do
+            align=$(( $align * 4 ))
+        done
+        nr=$(( ($nr + $align - 1) & ~($align - 1) ))
+        echo "/* aligned to $align */"
+        echo "#define __NR_syscalls $nr"
+    done
+
+    echo ""
+    echo "#endif /* ${fileguard} */"
+) > "$out"