v4.19.13 snapshot.
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
new file mode 100644
index 0000000..a7083a4
--- /dev/null
+++ b/include/linux/init_task.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX__INIT_TASK_H
+#define _LINUX__INIT_TASK_H
+
+#include <linux/rcupdate.h>
+#include <linux/irqflags.h>
+#include <linux/utsname.h>
+#include <linux/lockdep.h>
+#include <linux/ftrace.h>
+#include <linux/ipc.h>
+#include <linux/pid_namespace.h>
+#include <linux/user_namespace.h>
+#include <linux/securebits.h>
+#include <linux/seqlock.h>
+#include <linux/rbtree.h>
+#include <linux/sched/autogroup.h>
+#include <net/net_namespace.h>
+#include <linux/sched/rt.h>
+#include <linux/livepatch.h>
+#include <linux/mm_types.h>
+
+#include <asm/thread_info.h>
+
+extern struct files_struct init_files;
+extern struct fs_struct init_fs;
+extern struct nsproxy init_nsproxy;
+extern struct group_info init_groups;
+extern struct cred init_cred;
+
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
+#define INIT_PREV_CPUTIME(x) .prev_cputime = { \
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \
+},
+#else
+#define INIT_PREV_CPUTIME(x)
+#endif
+
+#ifdef CONFIG_POSIX_TIMERS
+#define INIT_CPU_TIMERS(s) \
+ .cpu_timers = { \
+ LIST_HEAD_INIT(s.cpu_timers[0]), \
+ LIST_HEAD_INIT(s.cpu_timers[1]), \
+ LIST_HEAD_INIT(s.cpu_timers[2]), \
+ },
+#else
+#define INIT_CPU_TIMERS(s)
+#endif
+
+#define INIT_TASK_COMM "swapper"
+
+/* Attach to the init_task data structure for proper alignment */
+#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
+#define __init_task_data __attribute__((__section__(".data..init_task")))
+#else
+#define __init_task_data /**/
+#endif
+
+/* Attach to the thread_info data structure for proper alignment */
+#define __init_thread_info __attribute__((__section__(".data..init_thread_info")))
+
+#endif