[PATCH 1/2] MAINTAINERS: add entry for the Sync File Framework

[PATCH 1/2] MAINTAINERS: add entry for the Sync File Framework

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

Add Gustavo as maintainer for the Sync File Framework. Sumit is
co-maintainer as he maintains drivers/dma-buf/. It also uses Sumit's
tree as base.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 MAINTAINERS | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index fb487d9..0891228 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3677,6 +3677,17 @@ F:	include/linux/*fence.h
 F:	Documentation/dma-buf-sharing.txt
 T:	git git://git.linaro.org/people/sumitsemwal/linux-dma-buf.git
 
+SYNC FILE FRAMEWORK
+M:	Sumit Semwal <sumit.semwal@linaro.org>
+R:	Gustavo Padovan <gustavo@padovan.org>
+S:	Maintained
+L:	linux-media@vger.kernel.org
+L:	dri-devel@lists.freedesktop.org
+F:	drivers/dma-buf/sync_file.c
+F:	include/linux/sync_file.h
+F:	Documentation/sync_file.txt
+T:	git git://git.linaro.org/people/sumitsemwal/linux-dma-buf.git
+
 DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
 M:	Vinod Koul <vinod.koul@intel.com>
 L:	dmaengine@vger.kernel.org
-- 
2.5.5

[PATCH 2/2] dma-buf/sync_file: improve Kconfig description for Sync Files

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

We've got a complaint saying that the description was quite obtuse and
indeed it was. This patch tries to improve it.

Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
---
 drivers/dma-buf/Kconfig | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
index 9824bc4..7e2d2c4 100644
--- a/drivers/dma-buf/Kconfig
+++ b/drivers/dma-buf/Kconfig
@@ -1,11 +1,20 @@
 menu "DMABUF options"
 
 config SYNC_FILE
-	bool "sync_file support for fences"
+	bool "Explicit Synchronization Framework"
 	default n
 	select ANON_INODES
 	select DMA_SHARED_BUFFER
 	---help---
-	  This option enables the fence framework synchronization to export
-	  sync_files to userspace that can represent one or more fences.
+	  The Sync File Framework adds explicit syncronization via
+	  userspace. It enables send/receive 'struct fence' objects to/from
+	  userspace via Sync File fds for synchronization between drivers via
+	  userspace components. It has been ported from Android.
+
+	  The first and main user for this is graphics in which a fence is
+	  associated with a buffer. When a job is submitted to the GPU a fence
+	  is attached to the buffer and is transfered via userspace, using Sync
+	  Files fds, to the DRM driver for example. More details at
+	  Documentation/sync_file.txt.
+
 endmenu
-- 
2.5.5