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authorCatalin Marinas <catalin.marinas@arm.com>2010-09-13 16:59:07 +0200
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-09-19 13:17:46 +0200
commitf8b63c184ad13cc8adc3dadb557d4fbc29f76e4d (patch)
treeaa524d2dce83f7cae404655785ba5cb344dd763e /arch/arm/include/asm/cacheflush.h
parentARM: 6381/1: Use lazy cache flushing on ARMv7 SMP systems (diff)
downloadlinux-f8b63c184ad13cc8adc3dadb557d4fbc29f76e4d.tar.xz
linux-f8b63c184ad13cc8adc3dadb557d4fbc29f76e4d.zip
ARM: 6382/1: Remove superfluous flush_kernel_dcache_page()
Since page cache pages are now considered 'dirty' by default, the cache flushing is handled via __flush_dcache_page() when a page gets mapped to user space. Highmem pages on VIVT systems are flushed during kunmap() and flush_kernel_dcache_page() was already a no-op in this case. ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE is still defined since ARM needs specific implementations for flush_kernel_vmap_range() and invalidate_kernel_vmap_range(). Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/cacheflush.h')
-rw-r--r--arch/arm/include/asm/cacheflush.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index d3730f0f4b50..042e13994d38 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -405,9 +405,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
static inline void flush_kernel_dcache_page(struct page *page)
{
- /* highmem pages are always flushed upon kunmap already */
- if ((cache_is_vivt() || cache_is_vipt_aliasing()) && !PageHighMem(page))
- __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE);
}
#define flush_dcache_mmap_lock(mapping) \