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arm64: Remove __flush_dcache_page()

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This function is only used in __sync_icache_dcache(), so remove it and
call __flush_dcache_area() directly. The flush_icache_user_range()
function is not used in the arm64 kernel.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Catalin Marinas
2013-05-01 16:38:23 +01:00
parent 7249b79f6b
commit ebd88367de
3 changed files with 1 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/include/asm/cacheflush.h
View File

@@ -123,9 +123,6 @@ static inline void __flush_icache_all(void)
#define flush_dcache_mmap_unlock(mapping) \ #define flush_dcache_mmap_unlock(mapping) \
spin_unlock_irq(&(mapping)->tree_lock) spin_unlock_irq(&(mapping)->tree_lock)
#define flush_icache_user_range(vma,page,addr,len) \
flush_dcache_page(page)
/* /*
* We don't appear to need to do anything here. In fact, if we did, we'd * We don't appear to need to do anything here. In fact, if we did, we'd
* duplicate cache flushing elsewhere performed by flush_dcache_page(). * duplicate cache flushing elsewhere performed by flush_dcache_page().

7
arch/arm64/mm/flush.c
View File

@@ -70,11 +70,6 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
#endif #endif
} }
void __flush_dcache_page(struct page *page)
{
__flush_dcache_area(page_address(page), PAGE_SIZE);
}
void __sync_icache_dcache(pte_t pte, unsigned long addr) void __sync_icache_dcache(pte_t pte, unsigned long addr)
{ {
struct page *page = pte_page(pte); struct page *page = pte_page(pte);
@@ -84,7 +79,7 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr)
return; return;
if (!test_and_set_bit(PG_dcache_clean, &page->flags)) { if (!test_and_set_bit(PG_dcache_clean, &page->flags)) {
__flush_dcache_page(page); __flush_dcache_area(page_address(page), PAGE_SIZE);
__flush_icache_all(); __flush_icache_all();
} else if (icache_is_aivivt()) { } else if (icache_is_aivivt()) {
__flush_icache_all(); __flush_icache_all();

1
arch/arm64/mm/mm.h
View File

@@ -1,3 +1,2 @@
extern void __flush_dcache_page(struct page *page);
extern void __init bootmem_init(void); extern void __init bootmem_init(void);
extern void __init arm64_swiotlb_init(void); extern void __init arm64_swiotlb_init(void);