powerpc/mm: inline pte_alloc_one_kernel() and pte_alloc_one() on PPC32

pte_alloc_one_kernel() and pte_alloc_one() are simple calls to
pte_fragment_alloc(), so they are good candidates for inlining as
already done on PPC64.
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>

arch/powerpc/include/asm/book3s/32/pgalloc.h

@@ -59,10 +59,19 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
 
 #define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
 
-extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-extern pgtable_t pte_alloc_one(struct mm_struct *mm);
-void pte_frag_destroy(void *pte_frag);
 pte_t *pte_fragment_alloc(struct mm_struct *mm, int kernel);
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
+{
+	return (pte_t *)pte_fragment_alloc(mm, 1);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
+{
+	return (pgtable_t)pte_fragment_alloc(mm, 0);
+}
+
+void pte_frag_destroy(void *pte_frag);
 void pte_fragment_free(unsigned long *table, int kernel);
 
 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)

arch/powerpc/include/asm/nohash/32/pgalloc.h

@@ -77,10 +77,19 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
 #define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
 #endif
 
-extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-extern pgtable_t pte_alloc_one(struct mm_struct *mm);
-void pte_frag_destroy(void *pte_frag);
 pte_t *pte_fragment_alloc(struct mm_struct *mm, int kernel);
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
+{
+	return (pte_t *)pte_fragment_alloc(mm, 1);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
+{
+	return (pgtable_t)pte_fragment_alloc(mm, 0);
+}
+
+void pte_frag_destroy(void *pte_frag);
 void pte_fragment_free(unsigned long *table, int kernel);
 
 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)

arch/powerpc/mm/pgtable_32.c

@@ -43,16 +43,6 @@ EXPORT_SYMBOL(ioremap_bot);	/* aka VMALLOC_END */
 
 extern char etext[], _stext[], _sinittext[], _einittext[];
 
-pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-{
-	return (pte_t *)pte_fragment_alloc(mm, 1);
-}
-
-pgtable_t pte_alloc_one(struct mm_struct *mm)
-{
-	return (pgtable_t)pte_fragment_alloc(mm, 0);
-}
-
 void __iomem *
 ioremap(phys_addr_t addr, unsigned long size)
 {