From 31954660a7a613cd01e6ab1e90e7fea6ca6ffc74 Mon Sep 17 00:00:00 2001 From: Gustavo Padovan Date: Tue, 31 May 2016 11:33:16 -0300 Subject: 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 Signed-off-by: Gustavo Padovan Signed-off-by: Sumit Semwal --- drivers/dma-buf/Kconfig | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index 9824bc4addf8..25bcfa0b474f 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 -- cgit v1.2.3