kernel: fix build

kernel/ksu.c

@@ -2,6 +2,7 @@
 #include <linux/fs.h>
 #include <linux/kobject.h>
 #include <linux/module.h>
+#include <linux/workqueue.h>
 #include <generated/utsrelease.h>
 #include <generated/compile.h>
 #include <linux/version.h> /* LINUX_VERSION_CODE, KERNEL_VERSION macros */
@@ -17,6 +18,13 @@
 #include "ksud.h"
 #include "supercalls.h"
 
+static struct workqueue_struct *ksu_workqueue;
+
+bool ksu_queue_work(struct work_struct *work)
+{
+    return queue_work(ksu_workqueue, work);
+}
+
 extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
 					void *argv, void *envp, int *flags);
 extern int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
@@ -50,6 +58,8 @@ int __init kernelsu_init(void)
 
 	ksu_core_init();
 
+	ksu_workqueue = alloc_ordered_workqueue("kernelsu_work_queue", 0);
+
 	ksu_allowlist_init();
 
 	ksu_throne_tracker_init();

kernel/ksu.h

@@ -111,4 +111,6 @@ static inline int endswith(const char *s, const char *t)
 }
 #endif
 
+bool ksu_queue_work(struct work_struct *work);
+
 #endif