arm64: Remove __flush_dcache_page()

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>

diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h
index 3300cbd18a89b504939c7b2530040f8bdd159ebf..fea9ee32720678b348685ef4803bb2c622c3eb8e 100644 (file)
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -123,9 +123,6 @@ static inline void __flush_icache_all(void)
 #define flush_dcache_mmap_unlock(mapping) \
        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
  * duplicate cache flushing elsewhere performed by flush_dcache_page().

diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c
index 7c716634a671289b9a2c860f5c4a116b3167e679..e4193e3adc7f9dbbbe57c63eac0ee60b32aaa3e5 100644 (file)
--- a/arch/arm64/mm/flush.c
+++ b/arch/arm64/mm/flush.c
@@ -70,11 +70,6 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
 #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)
 {
        struct page *page = pte_page(pte);
@@ -84,7 +79,7 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr)
                return;
 
        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();
        } else if (icache_is_aivivt()) {
                __flush_icache_all();

diff --git a/arch/arm64/mm/mm.h b/arch/arm64/mm/mm.h
index 916701e6d040b92b5edbf63935ff2ecd8f3e101a..d519f4f50c8c6f5431281ee5e15346e860e9f741 100644 (file)
--- a/arch/arm64/mm/mm.h
+++ b/arch/arm64/mm/mm.h
@@ -1,3 +1,2 @@
-extern void __flush_dcache_page(struct page *page);
 extern void __init bootmem_init(void);
 extern void __init arm64_swiotlb_init(void);