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

We are going to split <linux/sched/signal.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/signal.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 <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>

13 files changed, 14 insertions, 7 deletions

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 461eb1e66a0f..7af0dcc5d755 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -13,6 +13,7 @@
 #include <linux/bpf_trace.h>
 #include <linux/syscalls.h>
 #include <linux/slab.h>
+#include <linux/sched/signal.h>
 #include <linux/vmalloc.h>
 #include <linux/mmzone.h>
 #include <linux/anon_inodes.h>
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 0a5f630f5c54..0aae3183b029 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -7,7 +7,7 @@
 #include <linux/smp.h>
 #include <linux/init.h>
 #include <linux/notifier.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/unistd.h>
 #include <linux/cpu.h>
 #include <linux/oom.h>
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 19d9a578c753..7510dc687c0d 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -29,6 +29,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/sched/signal.h>
 #include <linux/kgdb.h>
 #include <linux/kdb.h>
 #include <linux/serial_core.h>
diff --git a/kernel/debug/kdb/kdb_bt.c b/kernel/debug/kdb/kdb_bt.c
index fe15fff5df53..9b976a42376d 100644
--- a/kernel/debug/kdb/kdb_bt.c
+++ b/kernel/debug/kdb/kdb_bt.c
@@ -12,7 +12,7 @@
 #include <linux/ctype.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/kdb.h>
 #include <linux/nmi.h>
 #include "kdb_private.h"
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index 40c07e4fa116..129247e56902 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -16,6 +16,8 @@
 #include <linux/export.h>
 #include <linux/sysctl.h>
 #include <linux/utsname.h>
+#include <linux/sched/signal.h>
+
 #include <trace/events/sched.h>
 
 /*
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index a0e90e0afc75..da128deb10ec 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -36,7 +36,7 @@
 #include <linux/spinlock.h>
 #include <linux/smp.h>
 #include <linux/interrupt.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/atomic.h>
 #include <linux/bitops.h>
 #include <linux/percpu.h>
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index e2307a6c29f1..641249471952 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -5,6 +5,7 @@
 #include <linux/sched/rt.h>
 #include <linux/sched/clock.h>
 #include <linux/sched/wake_q.h>
+#include <linux/sched/signal.h>
 #include <linux/sched/mm.h>
 #include <linux/u64_stats_sync.h>
 #include <linux/sched/deadline.h>
diff --git a/kernel/time/itimer.c b/kernel/time/itimer.c
index a95f13c31464..f6b961c5e58c 100644
--- a/kernel/time/itimer.c
+++ b/kernel/time/itimer.c
@@ -10,6 +10,7 @@
 #include <linux/interrupt.h>
 #include <linux/syscalls.h>
 #include <linux/time.h>
+#include <linux/sched/signal.h>
 #include <linux/posix-timers.h>
 #include <linux/hrtimer.h>
 #include <trace/events/timer.h>
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index b4377a5e4269..a2475a9f57d8 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -2,7 +2,7 @@
  * Implement CPU time clocks for the POSIX clock interface.
  */
 
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/posix-timers.h>
 #include <linux/errno.h>
 #include <linux/math64.h>
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 4fee1c3abd0b..0f411a4690a0 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -18,7 +18,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/percpu.h>
 #include <linux/profile.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/sched/clock.h>
 #include <linux/module.h>
 #include <linux/irq_work.h>
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 1f9a31f934a4..9f6984d52fec 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -24,7 +24,7 @@
 #include <linux/tracepoint.h>
 #include <linux/err.h>
 #include <linux/slab.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/static_key.h>
 
 extern struct tracepoint * const __start___tracepoints_ptrs[];
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 571a2d3821d8..d9a03b80b75d 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -17,7 +17,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/sched/mm.h>
 #include <linux/tsacct_kern.h>
 #include <linux/acct.h>
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 86b7854fec8e..2f735cbe05e8 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -8,6 +8,7 @@
 #include <linux/export.h>
 #include <linux/nsproxy.h>
 #include <linux/slab.h>
+#include <linux/sched/signal.h>
 #include <linux/user_namespace.h>
 #include <linux/proc_ns.h>
 #include <linux/highuid.h>