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authorGustavo Padovan <gustavo.padovan@collabora.co.uk>2016-05-31 11:33:16 -0300
committerSumit Semwal <sumit.semwal@linaro.org>2016-07-13 19:52:08 +0530
commit31954660a7a613cd01e6ab1e90e7fea6ca6ffc74 (patch)
treec75a19c7ef6f126e97f9a2754321b9fd41badfbf
parentc483e06506b8614220ed036319fc4c7af787f602 (diff)
dma-buf/sync_file: improve Kconfig description for Sync Files
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> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
-rw-r--r--drivers/dma-buf/Kconfig15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
index 9824bc4..25bcfa0 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 transferred via userspace, using Sync
+ Files fds, to the DRM driver for example. More details at
+ Documentation/sync_file.txt.
+
endmenu