Commit d1d8c925 authored Aug 21, 2008 by Eric Anholt Committed by Dave Airlie Oct 18, 2008

Export kmap_atomic_pfn for DRM-GEM.



The driver would like to map IO space directly for copying data in when
appropriate, to avoid CPU cache flushing for streaming writes.
kmap_atomic_pfn lets us avoid IPIs associated with ioremap for this process.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

parent 395e0ddc

arch/x86/mm/highmem_32.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)

		return (void*) vaddr;
		}
		EXPORT_SYMBOL_GPL(kmap_atomic_pfn); /* temporarily in use by i915 GEM until vmap */

		struct page kmap_atomic_to_page(void ptr)
		{