Commit 738c8780 authored by Catalin Marinas's avatar Catalin Marinas
Browse files

arm64: Avoid unnecessary clear_user_page() indirection 



Since clear_user_page() calls clear_page() directly, avoid the
unnecessary indirection.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
parent 2563776b

arch/arm64/include/asm/page.h

+1 −2
Original line number Diff line number Diff line
@@ -18,7 +18,6 @@ 
struct page;

struct vm_area_struct;



extern void __cpu_clear_user_page(void *p, unsigned long user);

extern void copy_page(void *to, const void *from);

extern void clear_page(void *to);
@@ -33,7 +32,7 @@ void copy_highpage(struct page *to, struct page *from); 
	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)

#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE



#define clear_user_page(addr,vaddr,pg)  __cpu_clear_user_page(addr, vaddr)

#define clear_user_page(page, vaddr, pg)	clear_page(page)

#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)



typedef struct page *pgtable_t;

arch/arm64/mm/copypage.c

+0 −6
Original line number Diff line number Diff line
@@ -35,9 +35,3 @@ void copy_user_highpage(struct page *to, struct page *from, 
	flush_dcache_page(to);

}

EXPORT_SYMBOL_GPL(copy_user_highpage);
 


void __cpu_clear_user_page(void *kaddr, unsigned long vaddr)

{

	clear_page(kaddr);

}

EXPORT_SYMBOL_GPL(__cpu_clear_user_page);

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