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authorJaya Kumar <jayakumar.lkml@gmail.com>2007-05-08 00:37:37 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:15:26 -0700
commit60b59beafba875aef6d378078bce0baf2287ae14 (patch)
treebb599c0e2ad43ee8f515a9f9af009442931b6a37 /drivers/video/Kconfig
parent3a2842480bbef42c3c90e14c1f378360d8c20a0c (diff)
fbdev: mm: Deferred IO support
This implements deferred IO support in fbdev. Deferred IO is a way to delay and repurpose IO. This implementation is done using mm's page_mkwrite and page_mkclean hooks in order to detect, delay and then rewrite IO. This functionality is used by hecubafb. [adaplas] This is useful for graphics hardware with no directly addressable/mappable framebuffer. Implementing this will allow the "framebuffer" to be accesible from user space via mmap(). Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/Kconfig')
-rw-r--r--drivers/video/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 8dfa88a68ae..61c0a03d33f 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -91,6 +91,11 @@ config FB_CFB_IMAGEBLIT
blitting. This is used by drivers that don't provide their own
(accelerated) version.
+config FB_DEFERRED_IO
+ bool
+ depends on FB
+ default y
+
config FB_SVGALIB
tristate
depends on FB