linux-kernel - [PATCH v1 13/27] powerpc/mm: define get_slice

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Date:   Wed, 20 Mar 2019 10:06:49 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        aneesh.kumar@...ux.ibm.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 13/27] powerpc/mm: define get_slice_psize() all the time

get_slice_psize() can be defined regardless of CONFIG_PPC_MM_SLICES
to avoid ifdefs

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 arch/powerpc/include/asm/slice.h | 4 ++++
 arch/powerpc/mm/hugetlbpage.c    | 4 +---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/slice.h b/arch/powerpc/include/asm/slice.h
index 44816cbc4198..d85c85422fdf 100644
--- a/arch/powerpc/include/asm/slice.h
+++ b/arch/powerpc/include/asm/slice.h
@@ -38,6 +38,10 @@ void slice_setup_new_exec(void);
 
 static inline void slice_init_new_context_exec(struct mm_struct *mm) {}
 
+#ifndef get_slice_psize
+#define get_slice_psize(mm, addr)	MMU_PAGE_4K
+#endif
+
 #endif /* CONFIG_PPC_MM_SLICES */
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 26a57ebaf5cf..87358b89513e 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -540,14 +540,12 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 
 unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
 {
-#ifdef CONFIG_PPC_MM_SLICES
 	/* With radix we don't use slice, so derive it from vma*/
-	if (!radix_enabled()) {
+	if (IS_ENABLED(CONFIG_PPC_MM_SLICES) && !radix_enabled()) {
 		unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start);
 
 		return 1UL << mmu_psize_to_shift(psize);
 	}
-#endif
 	return vma_kernel_pagesize(vma);
 }
 
-- 
2.13.3