[PATCH 2/3] loongarch/mm: Drop all pxdp_get()

[Anshuman Khandual]

Current platform specific pxdp_get() helpers are exact same as the default
ones defined in the generic MM header (include/linux/pgtable.h) thus making
them redundant. Move functions that are now depending on generic helpers to
avoid build failure.

Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: WANG Xuerui <kernel@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: loongarch@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
 arch/loongarch/include/asm/pgtable.h | 20 ++------------------
 arch/loongarch/mm/init.c             | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h
index 223528c04d739..cda4d5652d609 100644
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -125,9 +125,6 @@ struct vm_area_struct;
 
 #endif
 
-#define ptep_get(ptep) READ_ONCE(*(ptep))
-#define pmdp_get(pmdp) READ_ONCE(*(pmdp))
-
 #define pte_ERROR(e) \
 	pr_err("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e))
 #ifndef __PAGETABLE_PMD_FOLDED
@@ -371,12 +368,7 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
 #endif
 }
 
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
-	pte_t pte = ptep_get(ptep);
-	pte_val(pte) &= _PAGE_GLOBAL;
-	set_pte(ptep, pte);
-}
+void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 
 #define PGD_T_LOG2	(__builtin_ffs(sizeof(pgd_t)) - 1)
 #define PMD_T_LOG2	(__builtin_ffs(sizeof(pmd_t)) - 1)
@@ -611,16 +603,8 @@ static inline pmd_t pmd_mkinvalid(pmd_t pmd)
  * different prototype.
  */
 #define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
-static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
-					    unsigned long address, pmd_t *pmdp)
-{
-	pmd_t old = pmdp_get(pmdp);
-
-	pmd_clear(pmdp);
-
-	return old;
-}
 
+pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long address, pmd_t *pmdp);
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
 #ifdef CONFIG_NUMA_BALANCING
diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
index 3407030f3e7a2..3262dc3a2971e 100644
--- a/arch/loongarch/mm/init.c
+++ b/arch/loongarch/mm/init.c
@@ -255,3 +255,22 @@ struct execmem_info __init *execmem_arch_setup(void)
 	return &execmem_info;
 }
 #endif /* CONFIG_EXECMEM && MODULES_VADDR */
+
+void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+	pte_t pte = ptep_get(ptep);
+
+	pte_val(pte) &= _PAGE_GLOBAL;
+	set_pte(ptep, pte);
+}
+
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long address, pmd_t *pmdp)
+{
+	pmd_t old = pmdp_get(pmdp);
+
+	pmd_clear(pmdp);
+
+	return old;
+}
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
-- 
2.43.0