linux-kernel - [PATCH v2 05/37] powerpc: Deduplicate prototypes of ptep_set_access_flags() and phys_mem_access

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Date:   Mon, 25 Sep 2023 20:31:19 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 05/37] powerpc: Deduplicate prototypes of ptep_set_access_flags() and phys_mem_access_prot()

Prototypes of ptep_set_access_flags() and phys_mem_access_prot() are identical
for book3s and nohash.

Deduplicate them.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/include/asm/book3s/pgtable.h |  9 ---------
 arch/powerpc/include/asm/nohash/pgtable.h | 10 ----------
 arch/powerpc/include/asm/pgtable.h        | 10 ++++++++++
 3 files changed, 10 insertions(+), 19 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/pgtable.h b/arch/powerpc/include/asm/book3s/pgtable.h
index 3b7bd36a2321..6f4578daea6c 100644
--- a/arch/powerpc/include/asm/book3s/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/pgtable.h
@@ -9,15 +9,6 @@
 #endif
 
 #ifndef __ASSEMBLY__
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
-				 pte_t *ptep, pte_t entry, int dirty);
-
-struct file;
-extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
-				     unsigned long size, pgprot_t vma_prot);
-#define __HAVE_PHYS_MEM_ACCESS_PROT
-
 void __update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep);
 
 /*
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h
index c721478c5934..5b6647fb398b 100644
--- a/arch/powerpc/include/asm/nohash/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/pgtable.h
@@ -207,11 +207,6 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
 		mb();
 }
 
-
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
-				 pte_t *ptep, pte_t entry, int dirty);
-
 /*
  * Macro to mark a page protection value as "uncacheable".
  */
@@ -240,11 +235,6 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre
 
 #define pgprot_writecombine pgprot_noncached_wc
 
-struct file;
-extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
-				     unsigned long size, pgprot_t vma_prot);
-#define __HAVE_PHYS_MEM_ACCESS_PROT
-
 #ifdef CONFIG_HUGETLB_PAGE
 static inline int hugepd_ok(hugepd_t hpd)
 {
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index d0ee46de248e..bcdbdeda65d3 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -110,6 +110,16 @@ void mark_initmem_nx(void);
 static inline void mark_initmem_nx(void) { }
 #endif
 
+#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
+			  pte_t *ptep, pte_t entry, int dirty);
+
+struct file;
+pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
+			      unsigned long size, pgprot_t vma_prot);
+#define __HAVE_PHYS_MEM_ACCESS_PROT
+
+
 /*
  * When used, PTE_FRAG_NR is defined in subarch pgtable.h
  * so we are sure it is included when arriving here.
-- 
2.41.0