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

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

18 files changed, 18 insertions, 0 deletions

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 5a07c5a4b894..2083a5370308 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/interrupt.h>
 #include <linux/cache.h>
 #include <linux/profile.h>
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h
index 1ef40d82cfd3..3c9f7d18a7e6 100644
--- a/arch/arm64/include/asm/mmu_context.h
+++ b/arch/arm64/include/asm/mmu_context.h
@@ -25,6 +25,7 @@
 
 #include <linux/compiler.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 
 #include <asm/cacheflush.h>
 #include <asm/cpufeature.h>
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 827d52d78b67..f66e58523b96 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -22,6 +22,7 @@
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/interrupt.h>
 #include <linux/cache.h>
 #include <linux/profile.h>
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 804b251ee5d1..2204ae450d65 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -21,6 +21,7 @@
 #include <linux/personality.h>
 #include <linux/sched.h>
 #include <linux/sched/debug.h>
+#include <linux/sched/hotplug.h>
 #include <linux/stddef.h>
 #include <linux/thread_info.h>
 #include <linux/unistd.h>
diff --git a/arch/metag/kernel/smp.c b/arch/metag/kernel/smp.c
index c622293254e4..198eda75846b 100644
--- a/arch/metag/kernel/smp.c
+++ b/arch/metag/kernel/smp.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/interrupt.h>
 #include <linux/cache.h>
 #include <linux/profile.h>
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 4355a4cf4d74..4b94b7fbafa3 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -11,6 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/init.h>
 #include <linux/export.h>
 
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 16e37a28f876..3daa2cae50b0 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -10,6 +10,7 @@
 
 #include <linux/init.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/mm.h>
 #include <linux/delay.h>
 #include <linux/smp.h>
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index a2544c2394e4..1d3188c23bb8 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -12,6 +12,7 @@
 #include <linux/io.h>
 #include <linux/irqchip/mips-gic.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/slab.h>
 #include <linux/smp.h>
 #include <linux/types.h>
diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c
index cfcf240cedbe..66ede5b11355 100644
--- a/arch/mips/loongson64/loongson-3/smp.c
+++ b/arch/mips/loongson64/loongson-3/smp.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/cpu.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/smp.h>
 #include <linux/cpufreq.h>
 #include <asm/processor.h>
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index a83a6d26090d..078097a0b09d 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -12,6 +12,7 @@
 
 #include <linux/stddef.h>
 #include <linux/kernel.h>
+#include <linux/sched/hotplug.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/of.h>
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index c9eb7d6540ea..746ca7321b03 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -23,6 +23,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/smp.h>
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index e39e6c428af1..8b67e1eefb5c 100644
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/smp.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index a1b63e00b2f7..7bc0e91f8715 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -24,6 +24,7 @@
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/sched.h>	/* for idle_task_exit */
+#include <linux/sched/hotplug.h>
 #include <linux/cpu.h>
 #include <linux/of.h>
 #include <linux/slab.h>
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index d0a74d7ce433..b5766e03cdcb 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -31,6 +31,7 @@
 #include <linux/irqflags.h>
 #include <linux/cpu.h>
 #include <linux/slab.h>
+#include <linux/sched/hotplug.h>
 #include <linux/crash_dump.h>
 #include <linux/memblock.h>
 #include <asm/asm-offsets.h>
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index edc4769b047e..4abf119c129c 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -21,6 +21,7 @@
 #include <linux/cpu.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/atomic.h>
 #include <linux/clockchips.h>
 #include <asm/processor.h>
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 8e3e13924594..15052d364e04 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -6,6 +6,7 @@
 #include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/sched/hotplug.h>
 #include <linux/mm.h>
 #include <linux/pagemap.h>
 #include <linux/threads.h>
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index fe7a66e6b5a0..f3eb266d75ff 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -46,6 +46,7 @@
 #include <linux/export.h>
 #include <linux/sched.h>
 #include <linux/sched/topology.h>
+#include <linux/sched/hotplug.h>
 #include <linux/percpu.h>
 #include <linux/bootmem.h>
 #include <linux/err.h>
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index fcea72019df7..f2b3e1725349 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -21,6 +21,7 @@
 #include <linux/irq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
+#include <linux/sched/hotplug.h>
 #include <linux/reboot.h>
 #include <linux/seq_file.h>
 #include <linux/smp.h>