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

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

11 files changed, 17 insertions, 0 deletions

diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index ebf47d91b804..f8a3ab82e77f 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -21,6 +21,7 @@
 #include <linux/nodemask.h>
 #include <linux/of.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index 565dd69888cc..08243533e5ee 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -20,6 +20,7 @@
 #include <linux/nodemask.h>
 #include <linux/of.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/cpufreq.h>
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 21fdf02583fe..fce17789c675 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -20,6 +20,7 @@
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/smp.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 2cd5f4f1013c..17660e800e74 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -13,6 +13,7 @@
 #include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/slab.h>
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index a0d38685f7df..fe7a66e6b5a0 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -45,6 +45,7 @@
 #include <linux/smp.h>
 #include <linux/export.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/percpu.h>
 #include <linux/bootmem.h>
 #include <linux/err.h>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 9e6b064e5339..746c14e0d157 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -20,6 +20,7 @@
 #include <linux/cpu.h>
 #include <linux/cache.h>
 #include <linux/sched/sysctl.h>
+#include <linux/sched/topology.h>
 #include <linux/delay.h>
 #include <linux/crash_dump.h>
 #include <linux/prefetch.h>
diff --git a/block/blk-softirq.c b/block/blk-softirq.c
index 06cf9807f49a..87b7df4851bf 100644
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -9,6 +9,7 @@
 #include <linux/interrupt.h>
 #include <linux/cpu.h>
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 
 #include "blk.h"
 
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index bfc204e70338..c608c39cb161 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -9,6 +9,7 @@
  */
 
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
 #include <linux/cpumask.h>
 #include <linux/nodemask.h>
 #include <linux/mm.h>
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
new file mode 100644
index 000000000000..4f1159f76f92
--- /dev/null
+++ b/include/linux/sched/topology.h
@@ -0,0 +1,6 @@
+#ifndef _LINUX_SCHED_TOPOLOGY_H
+#define _LINUX_SCHED_TOPOLOGY_H
+
+#include <linux/sched.h>
+
+#endif /* _LINUX_SCHED_TOPOLOGY_H */
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 3b60d73ab290..11e0ab57748a 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -21,6 +21,8 @@
  */
 
 #include <linux/sched.h>
+#include <linux/sched/topology.h>
+
 #include <linux/latencytop.h>
 #include <linux/cpumask.h>
 #include <linux/cpuidle.h>
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 71b10a9b73cf..9b9cb260d9cf 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1,6 +1,7 @@
 
 #include <linux/sched.h>
 #include <linux/sched/sysctl.h>
+#include <linux/sched/topology.h>
 #include <linux/sched/rt.h>
 #include <linux/u64_stats_sync.h>
 #include <linux/sched/deadline.h>