sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>

We are going to split <linux/sched/debug.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/debug.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

arch/sh/kernel/dumpstack.c

@@ -11,6 +11,7 @@
 #include <linux/kallsyms.h>
 #include <linux/ftrace.h>
 #include <linux/debug_locks.h>
+#include <linux/sched/debug.h>
 #include <linux/kdebug.h>
 #include <linux/export.h>
 #include <linux/uaccess.h>

arch/sh/kernel/nmi_debug.c

@@ -9,6 +9,7 @@
 #include <linux/kdebug.h>
 #include <linux/notifier.h>
 #include <linux/sched.h>
+#include <linux/sched/debug.h>
 #include <linux/hardirq.h>
 
 enum nmi_action {

arch/sh/kernel/process_32.c

@@ -15,6 +15,7 @@
  */
 #include <linux/module.h>
 #include <linux/mm.h>
+#include <linux/sched/debug.h>
 #include <linux/slab.h>
 #include <linux/elfcore.h>
 #include <linux/kallsyms.h>

arch/sh/kernel/process_64.c

@@ -25,6 +25,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/sched/debug.h>
 #include <asm/syscalls.h>
 #include <linux/uaccess.h>
 #include <asm/pgtable.h>

arch/sh/kernel/stacktrace.c

@@ -10,6 +10,7 @@
  * for more details.
  */
 #include <linux/sched.h>
+#include <linux/sched/debug.h>
 #include <linux/stacktrace.h>
 #include <linux/thread_info.h>
 #include <linux/module.h>

arch/sh/kernel/traps.c

@@ -4,6 +4,7 @@
 #include <linux/kdebug.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
+#include <linux/sched/debug.h>
 #include <linux/uaccess.h>
 #include <linux/hardirq.h>
 #include <linux/kernel.h>

arch/sh/kernel/traps_64.c

@@ -10,6 +10,7 @@
  * for more details.
  */
 #include <linux/sched.h>
+#include <linux/sched/debug.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/errno.h>