diff options
Diffstat (limited to 'meta-moblin/packages/linux/linux-moblin-2.6.27/0013-Export-kmap_atomic_pfn-for-DRM-GEM.patch')
-rw-r--r-- | meta-moblin/packages/linux/linux-moblin-2.6.27/0013-Export-kmap_atomic_pfn-for-DRM-GEM.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.27/0013-Export-kmap_atomic_pfn-for-DRM-GEM.patch b/meta-moblin/packages/linux/linux-moblin-2.6.27/0013-Export-kmap_atomic_pfn-for-DRM-GEM.patch new file mode 100644 index 0000000000..cc90d46262 --- /dev/null +++ b/meta-moblin/packages/linux/linux-moblin-2.6.27/0013-Export-kmap_atomic_pfn-for-DRM-GEM.patch | |||
@@ -0,0 +1,24 @@ | |||
1 | commit 25eaa97fc74b225e13cf11ed8d770192ddc9355d | ||
2 | Author: Eric Anholt <eric@anholt.net> | ||
3 | Date: Thu Aug 21 12:53:33 2008 -0700 | ||
4 | |||
5 | Export kmap_atomic_pfn for DRM-GEM. | ||
6 | |||
7 | The driver would like to map IO space directly for copying data in when | ||
8 | appropriate, to avoid CPU cache flushing for streaming writes. | ||
9 | kmap_atomic_pfn lets us avoid IPIs associated with ioremap for this process. | ||
10 | |||
11 | Signed-off-by: Eric Anholt <eric@anholt.net> | ||
12 | |||
13 | diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c | ||
14 | index 165c871..d52e91d 100644 | ||
15 | --- a/arch/x86/mm/highmem_32.c | ||
16 | +++ b/arch/x86/mm/highmem_32.c | ||
17 | @@ -137,6 +137,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) | ||
18 | |||
19 | return (void*) vaddr; | ||
20 | } | ||
21 | +EXPORT_SYMBOL(kmap_atomic_pfn); | ||
22 | |||
23 | struct page *kmap_atomic_to_page(void *ptr) | ||
24 | { | ||