powerpc: Move page table dump files in a dedicated subdirectory

This patch moves the files related to page table dump in a
dedicated subdirectory.

The purpose is to clean a bit arch/powerpc/mm by regrouping
multiple files handling a dedicated function.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Shorten the file names while we're at it]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/Kconfig.debug

@@ -361,10 +361,6 @@ config PPC_PTDUMP
 
 	  If you are unsure, say N.
 
-config PPC_HTDUMP
-	def_bool y
-	depends on PPC_PTDUMP && PPC_BOOK3S_64
-
 config PPC_FAST_ENDIAN_SWITCH
 	bool "Deprecated fast endian-switch syscall"
         depends on DEBUG_KERNEL && PPC_BOOK3S_64

arch/powerpc/mm/Makefile

@@ -45,13 +45,5 @@ obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o
 obj-$(CONFIG_HIGHMEM)		+= highmem.o
 obj-$(CONFIG_PPC_COPRO_BASE)	+= copro_fault.o
 obj-$(CONFIG_SPAPR_TCE_IOMMU)	+= mmu_context_iommu.o
-obj-$(CONFIG_PPC_PTDUMP)	+= dump_linuxpagetables.o
-ifdef CONFIG_PPC_PTDUMP
-obj-$(CONFIG_4xx)		+= dump_linuxpagetables-generic.o
-obj-$(CONFIG_PPC_8xx)		+= dump_linuxpagetables-8xx.o
-obj-$(CONFIG_PPC_BOOK3E_MMU)	+= dump_linuxpagetables-generic.o
-obj-$(CONFIG_PPC_BOOK3S_32)	+= dump_linuxpagetables-generic.o dump_bats.o dump_sr.o
-obj-$(CONFIG_PPC_BOOK3S_64)	+= dump_linuxpagetables-book3s64.o
-endif
-obj-$(CONFIG_PPC_HTDUMP)	+= dump_hashpagetable.o
+obj-$(CONFIG_PPC_PTDUMP)	+= ptdump/
 obj-$(CONFIG_PPC_MEM_KEYS)	+= pkeys.o

arch/powerpc/mm/ptdump/8xx.c

@@ -7,7 +7,7 @@
 #include <linux/kernel.h>
 #include <asm/pgtable.h>
 
-#include "dump_linuxpagetables.h"
+#include "ptdump.h"
 
 static const struct flag_info flag_array[] = {
 	{

arch/powerpc/mm/ptdump/Makefile

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y	+= ptdump.o
+
+obj-$(CONFIG_4xx)		+= shared.o
+obj-$(CONFIG_PPC_8xx)		+= 8xx.o
+obj-$(CONFIG_PPC_BOOK3E_MMU)	+= shared.o
+obj-$(CONFIG_PPC_BOOK3S_32)	+= shared.o bats.o segment_regs.o
+obj-$(CONFIG_PPC_BOOK3S_64)	+= book3s64.o hashpagetable.o

arch/powerpc/mm/ptdump/book3s64.c

@@ -7,7 +7,7 @@
 #include <linux/kernel.h>
 #include <asm/pgtable.h>
 
-#include "dump_linuxpagetables.h"
+#include "ptdump.h"
 
 static const struct flag_info flag_array[] = {
 	{

arch/powerpc/mm/ptdump/ptdump.c

@@ -28,7 +28,7 @@
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 
-#include "dump_linuxpagetables.h"
+#include "ptdump.h"
 
 #ifdef CONFIG_PPC32
 #define KERN_VIRT_START	0

arch/powerpc/mm/ptdump/shared.c

@@ -7,7 +7,7 @@
 #include <linux/kernel.h>
 #include <asm/pgtable.h>
 
-#include "dump_linuxpagetables.h"
+#include "ptdump.h"
 
 static const struct flag_info flag_array[] = {
 	{