powerpc/mm: refactor definition of pgtable_cache[]

pgtable_cache[] is the same for the 4 subarches, lets make it common.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 0 insertions, 22 deletions

diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h
index cfd48d8cc055..df2dce6afe14 100644
--- a/arch/powerpc/include/asm/book3s/64/pgalloc.h
+++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h
@@ -19,26 +19,6 @@ struct vmemmap_backing {
 };
 extern struct vmemmap_backing *vmemmap_list;
 
-/*
- * Functions that deal with pagetables that could be at any level of
- * the table need to be passed an "index_size" so they know how to
- * handle allocation.  For PTE pages (which are linked to a struct
- * page for now, and drawn from the main get_free_pages() pool), the
- * allocation size will be (2^index_size * sizeof(pointer)) and
- * allocations are drawn from the kmem_cache in PGT_CACHE(index_size).
- *
- * The maximum index size needs to be big enough to allow any
- * pagetable sizes we need, but small enough to fit in the low bits of
- * any page table pointer.  In other words all pagetables, even tiny
- * ones, must be aligned to allow at least enough low 0 bits to
- * contain this value.  This value is also used as a mask, so it must
- * be one less than a power of two.
- */
-#define MAX_PGTABLE_INDEX_SIZE	0xf
-
-extern struct kmem_cache *pgtable_cache[];
-#define PGT_CACHE(shift) pgtable_cache[shift]
-
 extern pmd_t *pmd_fragment_alloc(struct mm_struct *, unsigned long);
 extern void pmd_fragment_free(unsigned long *);
 extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift);
@@ -199,8 +179,6 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
 	pgtable_free_tlb(tlb, table, PTE_INDEX);
 }
 
-#define check_pgt_cache()	do { } while (0)
-
 extern atomic_long_t direct_pages_count[MMU_PAGE_COUNT];
 static inline void update_page_count(int psize, long count)
 {