sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>

Update all usage sites first.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 952e2c0..42274bd 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -42,6 +42,7 @@
 #include <linux/of_fdt.h>
 #include <linux/efi.h>
 #include <linux/psci.h>
+#include <linux/sched/task.h>
 #include <linux/mm.h>
 
 #include <asm/acpi.h>
diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index 201d918..55d1e92 100644
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c
@@ -13,6 +13,7 @@
 #define pr_fmt(fmt) "kasan: " fmt
 #include <linux/kasan.h>
 #include <linux/kernel.h>
+#include <linux/sched/task.h>
 #include <linux/memblock.h>
 #include <linux/start_kernel.h>
 #include <linux/mm.h>
diff --git a/arch/frv/mm/init.c b/arch/frv/mm/init.c
index 88a1597..328f0a2 100644
--- a/arch/frv/mm/init.c
+++ b/arch/frv/mm/init.c
@@ -18,6 +18,7 @@
 
 #include <linux/signal.h>
 #include <linux/sched.h>
+#include <linux/sched/task.h>
 #include <linux/pagemap.h>
 #include <linux/gfp.h>
 #include <linux/swap.h>
diff --git a/arch/metag/mm/init.c b/arch/metag/mm/init.c
index c0ec116..188d4d9 100644
--- a/arch/metag/mm/init.c
+++ b/arch/metag/mm/init.c
@@ -12,6 +12,7 @@
 #include <linux/percpu.h>
 #include <linux/memblock.h>
 #include <linux/initrd.h>
+#include <linux/sched/task.h>
 
 #include <asm/setup.h>
 #include <asm/page.h>
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index a3fa80d..6e57ffa 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/sched/task.h>
 #include <linux/console.h>
 #include <linux/bootmem.h>
 #include <linux/initrd.h>
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index fa20060..dfc479d 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -10,6 +10,7 @@
 #include <linux/smp.h>
 #include <linux/export.h>
 #include <linux/memblock.h>
+#include <linux/sched/task.h>
 
 #include <asm/lppaca.h>
 #include <asm/paca.h>
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c
index 3a952a4..d4dbf087 100644
--- a/arch/um/kernel/skas/process.c
+++ b/arch/um/kernel/skas/process.c
@@ -6,6 +6,7 @@
 #include <linux/init.h>
 #include <linux/sched/mm.h>
 #include <linux/sched/task_stack.h>
+#include <linux/sched/task.h>
 
 #include <as-layout.h>
 #include <kern.h>
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index e8175a8..4b85acd 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -11,7 +11,9 @@
 #include <linux/string.h>
 #include <linux/utsname.h>
 #include <linux/sched.h>
+#include <linux/sched/task.h>
 #include <linux/kmsg_dump.h>
+
 #include <asm/pgtable.h>
 #include <asm/processor.h>
 #include <asm/sections.h>
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index c7e2ca9..f2fd8fe 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -9,6 +9,7 @@
 #include <linux/delay.h>
 #include <linux/sched.h>
 #include <linux/sched/clock.h>
+#include <linux/sched/task.h>
 #include <linux/init.h>
 #include <linux/kprobes.h>
 #include <linux/kgdb.h>
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index 0493c17..8d63d7a 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -4,6 +4,7 @@
 #include <linux/kdebug.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/sched/task.h>
 #include <linux/vmalloc.h>
 
 #include <asm/tlbflush.h>
diff --git a/fs/namespace.c b/fs/namespace.c
index 131cd7b..cc1375ef 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -25,6 +25,8 @@
 #include <linux/magic.h>
 #include <linux/bootmem.h>
 #include <linux/task_work.h>
+#include <linux/sched/task.h>
+
 #include "pnode.h"
 #include "internal.h"
 
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 7e10a78..320eca0 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -5,5 +5,6 @@
 #include <linux/cred.h>
 #include <linux/sched.h>
 #include <linux/sched/jobctl.h>
+#include <linux/sched/task.h>
 
 #endif /* _LINUX_SCHED_SIGNAL_H */
diff --git a/init/init_task.c b/init/init_task.c
index 53d4ce9..66787e3 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -4,6 +4,7 @@
 #include <linux/sched.h>
 #include <linux/sched/sysctl.h>
 #include <linux/sched/rt.h>
+#include <linux/sched/task.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index 6605496..c94135f 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/sched.h>
+#include <linux/sched/task.h>
 #include <linux/slab.h>
 #include <linux/taskstats.h>
 #include <linux/time.h>
diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c
index 8d4678e..9c7d89d 100644
--- a/lib/is_single_threaded.c
+++ b/lib/is_single_threaded.c
@@ -10,6 +10,7 @@
  * 2 of the Licence, or (at your option) any later version.
  */
 #include <linux/sched/signal.h>
+#include <linux/sched/task.h>
 #include <linux/sched/mm.h>
 
 /*
diff --git a/mm/vmacache.c b/mm/vmacache.c
index 4355d34..7ffa0ee 100644
--- a/mm/vmacache.c
+++ b/mm/vmacache.c
@@ -2,6 +2,7 @@
  * Copyright (C) 2014 Davidlohr Bueso.
  */
 #include <linux/sched/signal.h>
+#include <linux/sched/task.h>
 #include <linux/mm.h>
 #include <linux/vmacache.h>