mips: drop paging_init()

All three variants of paging_init() on MIPS are wrappers for
pagetable_init().

Instead of having three identical wrappers, call pagetable_init() directly
from setup_arch() and remove the unnecessary paging_init() functions.

Link: https://lkml.kernel.org/r/20260111082105.290734-26-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

arch/mips/include/asm/pgalloc.h

@@ -101,6 +101,4 @@ static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
 
 #endif /* __PAGETABLE_PUD_FOLDED */
 
-extern void pagetable_init(void);
-
 #endif /* _ASM_PGALLOC_H */

arch/mips/include/asm/pgtable.h

@@ -56,7 +56,7 @@ extern unsigned long zero_page_mask;
 	(virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
 #define __HAVE_COLOR_ZERO_PAGE
 
-extern void paging_init(void);
+extern void pagetable_init(void);
 
 /*
  * Conversion functions: convert a page and protection to a page entry,

arch/mips/kernel/setup.c

@@ -614,7 +614,7 @@ static void __init bootcmdline_init(void)
  * kernel but generic memory management system is still entirely uninitialized.
  *
  *  o bootmem_init()
- *  o paging_init()
+ *  o pagetable_init()
  *  o dma_contiguous_reserve()
  *
  * At this stage the bootmem allocator is ready to use.
@@ -778,7 +778,7 @@ void __init setup_arch(char **cmdline_p)
 	prefill_possible_map();
 
 	cpu_cache_init();
-	paging_init();
+	pagetable_init();
 
 	memblock_dump_all();
 

arch/mips/loongson64/numa.c

@@ -160,11 +160,6 @@ void __init arch_zone_limits_init(unsigned long *max_zone_pfns)
 	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
 }
 
-void __init paging_init(void)
-{
-	pagetable_init();
-}
-
 /* All PCI device belongs to logical Node-0 */
 int pcibus_to_node(struct pci_bus *bus)
 {

arch/mips/mm/init.c

@@ -415,11 +415,6 @@ void __init arch_zone_limits_init(unsigned long *max_zone_pfns)
 #endif
 }
 
-void __init paging_init(void)
-{
-	pagetable_init();
-}
-
 #ifdef CONFIG_64BIT
 static struct kcore_list kcore_kseg0;
 #endif

arch/mips/sgi-ip27/ip27-memory.c

@@ -410,8 +410,3 @@ void __init arch_zone_limits_init(unsigned long *max_zone_pfns)
 {
 	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
 }
-
-void __init paging_init(void)
-{
-	pagetable_init();
-}